Compare published benchmark results from matching versions and cohorts, API pricing, and technical specifications. Any documented test setup differences remain visible.
shared result series
62
distinct benchmarks
4
latest retrieval
2026-09-29
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Specifications
General specifications
Release date, availability, context window, architecture, and published parameter counts at a glance. Undisclosed details remain marked as unavailable.
Specifications for GPT-5.6 Sol and DeepSeek-V4-Flash
The table compares official standard API rates per 1M tokens, including published cache pricing. Batch, fast, priority, regional surcharges, tool calls, and cloud platform pricing are excluded.
Key to the marks:better valuebetter, but not conclusivetie
Pricing by provider
Direct developer pricing and provider endpoint tariffs routed through OpenRouter are listed separately. Prices are in USD per 1M tokens. Context-dependent direct tiers plus regional, Flex, Priority, and other OpenRouter tariffs remain individually identifiable.
Provider pricing for GPT-5.6 Sol and DeepSeek-V4-Flash
Only published results with the same benchmark version, task, metric, and comparison cohort are paired. Different reasoning levels, agents, harnesses, or output limits appear directly in the table.
Capability profile from matched benchmarks
Each axis averages directly matched benchmark families. A value of 100 means the stronger value within this pair, not a universal quality score.
Not enough directly matched categories for a reliable radar
Only 2 of at least 5 categories have comparable, direct model measurements. The benchmark tables below show the available evidence without filling missing axes.
GPT-5.6 SolDeepSeek-V4-Flash
AlmanBench v0.1Accepted cases. Higher is better. No documented setup difference
GPT-5.6 SolWinner95.141 %
DeepSeek-V4-Flash93.003 %
CyberBench v1.1Patch. Higher is better. No documented setup difference
GPT-5.6 SolWinner83.051 %
DeepSeek-V4-Flash72.414 %
LMArena Text, Style ControlOverall. Higher is better. Test setup not documented as identical
GPT-5.6 SolHigher measured value1,483.171
DeepSeek-V4-Flash1,436.082
Taste-BenchOverall. Higher is better. Test setup not documented as identical
GPT-5.6 SolHigher measured value59.7 %
DeepSeek-V4-Flash43.3 %
CyberBench v1.1PoC. Higher is better. No documented setup difference
GPT-5.6 SolWinner93.22 %
DeepSeek-V4-Flash61.017 %
LMArena Text, Style ControlOverall. Higher is better. Test setup not documented as identical
GPT-5.6 SolHigher measured value1,483.171
DeepSeek-V4-Flash1,438.511
LMArena Text, Style ControlBusiness, management and finance. Higher is better. Test setup not documented as identical
GPT-5.6 SolHigher measured value1,485.385
DeepSeek-V4-Flash1,438.526
LMArena Text, Style ControlBusiness, management and finance. Higher is better. Test setup not documented as identical
GPT-5.6 SolHigher measured value1,485.385
DeepSeek-V4-Flash1,434.189
LMArena Text, Style ControlChinese. Higher is better. Test setup not documented as identical
GPT-5.6 SolHigher measured value1,537.771
DeepSeek-V4-Flash1,471.267
LMArena Text, Style ControlChinese. Higher is better. Test setup not documented as identical
GPT-5.6 SolHigher measured value1,537.771
DeepSeek-V4-Flash1,479.924
LMArena Text, Style ControlCoding. Higher is better. Test setup not documented as identical
GPT-5.6 SolHigher measured value1,530.687
DeepSeek-V4-Flash1,484.094
LMArena Text, Style ControlCoding. Higher is better. Test setup not documented as identical
GPT-5.6 SolHigher measured value1,530.687
DeepSeek-V4-Flash1,479.555
Key to the marks:better valuebetter, but not conclusivetie
Benchmark scores for GPT-5.6 Sol and DeepSeek-V4-Flash
Benchmark and task
GPT-5.6 Sol
DeepSeek-V4-Flash
Source
AlmanBench v0.1Accepted casesTest details
No documented difference in the test setupVersion: v0.1, results commit f34ddbfMetric: accepted casesScoring: Higher is betterSettings: Reasoning: max1,029 public tasks with one direct run per row. The target is the Alman language specification.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 34,258 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 51,871 anonymous pairwise votes.
Higher measured value1,483.171
95% confidence interval: ±4.527The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,436.082
95% confidence interval: ±4.048The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: arxiv:2609.25804v2Metric: both-orders-correct, engineering/research macro averageScoring: Higher is betterGPT-5.6 Sol: Reasoning: xhigh, Output limit: 65,536 tokens, Attempts: 502 questions, two option orders each DeepSeek-V4-Flash: Reasoning: max, Output limit: 65,536 tokens, Attempts: 502 questions, two option orders eachSame prompt for all models. Each of 502 questions is shown twice with the options reversed. Average of engineering and research success rates, requiring both orders to be correct. 65,536-token output budget; unparseable answers count as wrong.
Higher measured value59.7 %
0 of 1,004 responses were unparseable and counted as wrong. Not a Gradually test.
43.3 %
2 of 1,004 responses were unparseable and counted as wrong. Not a Gradually test.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 34,258 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 51,747 anonymous pairwise votes.
Higher measured value1,483.171
95% confidence interval: ±4.527The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,438.511
95% confidence interval: ±4.115The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlBusiness, management and financeTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 6,528 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 10,436 anonymous pairwise votes.
Higher measured value1,485.385
95% confidence interval: ±8.098The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,438.526
95% confidence interval: ±6.971The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlBusiness, management and financeTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 6,528 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 10,641 anonymous pairwise votes.
Higher measured value1,485.385
95% confidence interval: ±8.098The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,434.189
95% confidence interval: ±6.982The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 2,675 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 2,996 anonymous pairwise votes.
Higher measured value1,537.771
95% confidence interval: ±12.067The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,471.267
95% confidence interval: ±11.424The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 2,675 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 2,992 anonymous pairwise votes.
Higher measured value1,537.771
95% confidence interval: ±12.067The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,479.924
95% confidence interval: ±11.42The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 9,391 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 15,262 anonymous pairwise votes.
Higher measured value1,530.687
95% confidence interval: ±7.09The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,484.094
95% confidence interval: ±6.23The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 9,391 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 15,239 anonymous pairwise votes.
Higher measured value1,530.687
95% confidence interval: ±7.09The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,479.555
95% confidence interval: ±6.265The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 6,868 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 8,539 anonymous pairwise votes.
Higher measured value1,470.128
95% confidence interval: ±8.25The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,407.791
95% confidence interval: ±7.543The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 6,868 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 8,638 anonymous pairwise votes.
Higher measured value1,470.128
95% confidence interval: ±8.25The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,410.703
95% confidence interval: ±7.575The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 13,693 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 23,008 anonymous pairwise votes.
Higher measured value1,488.245
95% confidence interval: ±6.067The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,444.92
95% confidence interval: ±5.29The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 13,693 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 22,908 anonymous pairwise votes.
Higher measured value1,488.245
95% confidence interval: ±6.067The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,449.94
95% confidence interval: ±5.323The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlEntertainment, sports and mediaTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 8,521 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 11,179 anonymous pairwise votes.
Higher measured value1,471.695
95% confidence interval: ±7.555The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,404.567
95% confidence interval: ±6.937The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlEntertainment, sports and mediaTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 8,521 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 11,428 anonymous pairwise votes.
Higher measured value1,471.695
95% confidence interval: ±7.555The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,408.063
95% confidence interval: ±6.896The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 25,743 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 39,226 anonymous pairwise votes.
Higher measured value1,498.373
95% confidence interval: ±5.89The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,431.809
95% confidence interval: ±5.308The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 25,743 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 39,391 anonymous pairwise votes.
Higher measured value1,498.373
95% confidence interval: ±5.89The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,436.008
95% confidence interval: ±5.353The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 3,890 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 5,392 anonymous pairwise votes.
Higher measured value1,534.172
95% confidence interval: ±10.051The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,457.264
95% confidence interval: ±8.778The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 3,890 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 5,311 anonymous pairwise votes.
Higher measured value1,534.172
95% confidence interval: ±10.051The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,466.306
95% confidence interval: ±8.867The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 1,056 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 2,006 anonymous pairwise votes.
Higher measured value1,509.759
95% confidence interval: ±19.656The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,448.483
95% confidence interval: ±15.039The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 1,056 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 1,966 anonymous pairwise votes.
Higher measured value1,509.759
95% confidence interval: ±19.656The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,459.263
95% confidence interval: ±15.286The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 535 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 843 anonymous pairwise votes.
Higher measured value1,505.593
95% confidence interval: ±25.799The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,424.769
95% confidence interval: ±21.221The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 535 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 906 anonymous pairwise votes.
Higher measured value1,505.593
95% confidence interval: ±25.799The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,433.595
95% confidence interval: ±20.539The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 22,641 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 34,753 anonymous pairwise votes.
Higher measured value1,509.071
95% confidence interval: ±5.285The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,458.919
95% confidence interval: ±4.767The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 22,641 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 34,700 anonymous pairwise votes.
Higher measured value1,509.071
95% confidence interval: ±5.285The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,458.083
95% confidence interval: ±4.832The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 9,072 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 16,176 anonymous pairwise votes.
Higher measured value1,507.352
95% confidence interval: ±7.094The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,463.433
95% confidence interval: ±6.065The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 9,072 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 16,039 anonymous pairwise votes.
Higher measured value1,507.352
95% confidence interval: ±7.094The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,464.61
95% confidence interval: ±6.133The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 12,137 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 17,961 anonymous pairwise votes.
Higher measured value1,489.133
95% confidence interval: ±6.469The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,428.187
95% confidence interval: ±5.811The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 12,137 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 18,051 anonymous pairwise votes.
Higher measured value1,489.133
95% confidence interval: ±6.469The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,433.413
95% confidence interval: ±5.881The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 517 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 647 anonymous pairwise votes.
Higher measured value1,500.228
95% confidence interval: ±28.01The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,398.363
95% confidence interval: ±24.906The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 517 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 635 anonymous pairwise votes.
Higher measured value1,500.228
95% confidence interval: ±28.01The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,424.242
95% confidence interval: ±25.166The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 683 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 898 anonymous pairwise votes.
Higher measured value1,447.288
95% confidence interval: ±23.945The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,392.925
95% confidence interval: ±20.977The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 683 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 951 anonymous pairwise votes.
Higher measured value1,447.288
95% confidence interval: ±23.945The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,378.153
95% confidence interval: ±20.872The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlLegal and governmentTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 2,909 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 4,139 anonymous pairwise votes.
Higher measured value1,493.838
95% confidence interval: ±11.614The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,447.478
95% confidence interval: ±9.874The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlLegal and governmentTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 2,909 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 4,107 anonymous pairwise votes.
Higher measured value1,493.838
95% confidence interval: ±11.614The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,457.491
95% confidence interval: ±9.927The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlLife, physical and social scienceTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 5,597 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 8,423 anonymous pairwise votes.
Higher measured value1,487.268
95% confidence interval: ±8.534The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,456.345
95% confidence interval: ±7.388The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlLife, physical and social scienceTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 5,597 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 8,509 anonymous pairwise votes.
Higher measured value1,487.268
95% confidence interval: ±8.534The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,459.724
95% confidence interval: ±7.418The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 16,066 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 23,359 anonymous pairwise votes.
Higher measured value1,497.175
95% confidence interval: ±6.045The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,447.83
95% confidence interval: ±5.578The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 16,066 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 23,501 anonymous pairwise votes.
Higher measured value1,497.175
95% confidence interval: ±6.045The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,448.636
95% confidence interval: ±5.577The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 1,601 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 2,688 anonymous pairwise votes.
Higher measured value1,494.283
95% confidence interval: ±14.807The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,425.467
95% confidence interval: ±11.801The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 1,601 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 2,619 anonymous pairwise votes.
Higher measured value1,494.283
95% confidence interval: ±14.807The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,441.412
95% confidence interval: ±11.893The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 1,930 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 2,975 anonymous pairwise votes.
Higher measured value1,512.669
95% confidence interval: ±14.013The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,434.489
95% confidence interval: ±11.462The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 1,930 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 2,828 anonymous pairwise votes.
Higher measured value1,512.669
95% confidence interval: ±14.013The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,445.003
95% confidence interval: ±11.761The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlMedicine and healthcareTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 2,514 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 3,699 anonymous pairwise votes.
Higher measured value1,480.211
95% confidence interval: ±12.587The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,459.257
95% confidence interval: ±10.503The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlMedicine and healthcareTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 2,514 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 3,774 anonymous pairwise votes.
Higher measured value1,480.211
95% confidence interval: ±12.587The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,461.307
95% confidence interval: ±10.453The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 5,680 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 9,363 anonymous pairwise votes.
Higher measured value1,484.308
95% confidence interval: ±8.592The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,453.414
95% confidence interval: ±7.284The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 5,680 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 9,233 anonymous pairwise votes.
Higher measured value1,484.308
95% confidence interval: ±8.592The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,446.332
95% confidence interval: ±7.34The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 20,560 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 28,862 anonymous pairwise votes.
Higher measured value1,474.574
95% confidence interval: ±5.358The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,423.239
95% confidence interval: ±4.947The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 20,560 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 28,837 anonymous pairwise votes.
Higher measured value1,474.574
95% confidence interval: ±5.358The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,423.125
95% confidence interval: ±5.023The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 530 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 1,030 anonymous pairwise votes.
Higher measured value1,502.031
95% confidence interval: ±25.782The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,438.601
95% confidence interval: ±18.712The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 530 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 1,037 anonymous pairwise votes.
Higher measured value1,502.031
95% confidence interval: ±25.782The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,434.977
95% confidence interval: ±18.457The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 3,976 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 5,750 anonymous pairwise votes.
Higher measured value1,492.473
95% confidence interval: ±9.91The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,433.519
95% confidence interval: ±8.502The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 3,976 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 5,790 anonymous pairwise votes.
Higher measured value1,492.473
95% confidence interval: ±9.91The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,437.327
95% confidence interval: ±8.593The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlSoftware and IT servicesTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 13,555 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 21,360 anonymous pairwise votes.
Higher measured value1,521.192
95% confidence interval: ±6.18The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,470.864
95% confidence interval: ±5.508The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlSoftware and IT servicesTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 13,555 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 21,329 anonymous pairwise votes.
Higher measured value1,521.192
95% confidence interval: ±6.18The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,472.722
95% confidence interval: ±5.539The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 994 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 1,596 anonymous pairwise votes.
Higher measured value1,468.704
95% confidence interval: ±19.601The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,433.099
95% confidence interval: ±16.059The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 994 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 1,497 anonymous pairwise votes.
Higher measured value1,468.704
95% confidence interval: ±19.601The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,429.802
95% confidence interval: ±16.45The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlWriting, literature and languageTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 9,085 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 12,557 anonymous pairwise votes.
Higher measured value1,482.503
95% confidence interval: ±7.271The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,415.672
95% confidence interval: ±6.557The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
LMArena Text, Style ControlWriting, literature and languageTest details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.6 Sol: Snapshot: gpt-5.6-sol-xhigh, Reasoning: xhigh, Harness: Arena text, style control DeepSeek-V4-Flash: Snapshot: deepseek-v4-flash-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.6 Sol: Style-controlled Arena rating from 9,085 anonymous pairwise votes.DeepSeek-V4-Flash: Style-controlled Arena rating from 12,763 anonymous pairwise votes.
Higher measured value1,482.503
95% confidence interval: ±7.271The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,422.277
95% confidence interval: ±6.549The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Key to the marks:better valuebetter, but not conclusivetie
Our model tests
Our tests
Compare how the models respond to the same prompt. Each test shows the first attempt, with no subsequent fixes to the generated code. These results do not contribute to an overall score.
Pelican on a bicycle
A community classic for free-form SVG drawing.
GPT-5.6 Sol
API access was unavailable for this run. The model was not evaluated.
Reasoning (requested): high
First attempt
Run date
7 Sept 2026
API provider
openrouter
Requested API model
openai/gpt-5.6-sol
Reasoning setting
high
Pinned endpoint
OpenAI | openai/gpt-5.6-sol-20260709
Temperature
Provider default
Token limit including reasoning
8,192 tokens
Test protocol
community-visual-tests-v1
Technical checks
Not run
Not yet visually reviewed. A successful recording does not confirm correct physics or full compliance with the prompt.
DeepSeek-V4-Flash
API access was unavailable for this run. The model was not evaluated.
Reasoning (requested): high
First attempt
Run date
7 Sept 2026
API provider
openrouter
Requested API model
deepseek/deepseek-v4-flash-0731
Reasoning setting
high
Pinned endpoint
DeepSeek | deepseek/deepseek-v4-flash-20260731
Temperature
Provider default
Token limit including reasoning
8,192 tokens
Test protocol
community-visual-tests-v1
Technical checks
Not run
Not yet visually reviewed. A successful recording does not confirm correct physics or full compliance with the prompt.
Your workload, budget, and required context length matter most. A coding benchmark says little about visual understanding or agent performance.
The standard price table uses direct developer rates. The provider comparison labels OpenRouter endpoints, regions, and special tariffs separately.
Every result links to its measurement source and retrieval date. Labels distinguish vendor reports, official benchmark leaderboards, and independent evaluations. Disputed or archived results are excluded.
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Compare GPT-5.6 Sol and DeepSeek-V4-Flash with other leading models using the same data and benchmark logic.