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Head-to-head comparison

GPT-5.4 mini vs. DeepSeek-V4-Pro

Compare published benchmark results from matching versions and cohorts, API pricing, and technical specifications. Any documented test setup differences remain visible.

shared result series
158
distinct benchmarks
18
latest retrieval
2026-09-04

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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-5.4 mini and DeepSeek-V4-Pro
AttributeGPT-5.4 miniDeepSeek-V4-Pro
ProviderOpenAIDeepSeek
ReleasedMar 2026Apr 24, 2026
AvailabilityActivePreview
Model typeProprietaryOpen Weights
ParametersNot published1.6T, 49B active
ArchitectureNot publishedMixture of Experts
Context window400,000 tokens1,000,000 tokens
Knowledge cutoffAugust 31, 2025Not published
Technical sourcesModelModel, Context

Pricing

API pricing compared

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.

API pricing for GPT-5.4 mini and DeepSeek-V4-Pro
Price typeGPT-5.4 miniDeepSeek-V4-Pro
API input$0.75$0.43
API output$4.5$0.87
Cache read$0.07$0.
Cache write (5 min.)Not listedNot listed
Cache write (1 hr.)Not listedNot listed
Price verified07/30/2026 Source07/30/2026 Source
GPT-5.4 miniDeepSeek-V4-Pro
API inputUSD per 1M tokens, base tier
GPT-5.4 mini$0.75
DeepSeek-V4-ProLower price$0.435
API outputUSD per 1M tokens, base tier
GPT-5.4 mini$4.5
DeepSeek-V4-ProLower price$0.87
Cache readUSD per 1M tokens, base tier
GPT-5.4 mini$0.075
DeepSeek-V4-ProLower price$0.004

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-5.4 mini and DeepSeek-V4-Pro
ModelProviderPurchase route and tariffInput per 1M tokensOutput per 1M tokensSource
GPT-5.4 miniOpenAIDirect from developerStandard API$0.75$4.5Source07/30/2026
AzureVia OpenRouterazure$0.75$4.5Source09/07/2026
AzureVia OpenRouterazure/us$0.825$4.95Source09/07/2026
OpenAIVia OpenRouteropenai$0.75$4.5Source09/07/2026
OpenAIVia OpenRouteropenai/fast$1.5$9Source09/07/2026
OpenAIVia OpenRouteropenai/flexLowest listed price: $0.375Lowest listed price: $2.25Source09/07/2026
DeepSeek-V4-ProDeepSeekDirect from developerStandard APILowest listed price: $0.435Lowest listed price: $0.87Source07/30/2026
AlibabaVia OpenRouteralibaba$1.122$3.366Source09/07/2026
BaiduVia OpenRouterbaidu/fp8$1.1194$3.3581Source09/07/2026
BaseTenVia OpenRouterbaseten/fp4#1$1.32$3.96Source09/07/2026
BaseTenVia OpenRouterbaseten/fp4#2$1.32$3.96Source09/07/2026
CloudflareVia OpenRoutercloudflare$1.32$3.96Source09/07/2026
CoreWeaveVia OpenRoutercoreweave/fp8$1.31$3.96Source09/07/2026
DeepInfraVia OpenRouterdeepinfra/fp8$1.3$2.6Source09/07/2026
DeepSeekVia OpenRouterdeepseek$0.66$1.98Source09/07/2026
DigitalOceanVia OpenRouterdigitalocean$1.32$3.96Source09/07/2026
FireworksVia OpenRouterfireworks$1.32$3.96Source09/07/2026
GMICloudVia OpenRoutergmicloud/fp8$1.122$3.366Source09/07/2026
NextBitVia OpenRouternextbit/fp8$1.32$3.96Source09/07/2026
NovitaVia OpenRouternovita/fp8$1.32$3.96Source09/07/2026
ParasailVia OpenRouterparasail/fp8$1.32$3.96Source09/07/2026
PhalaVia OpenRouterphala$1.45$4.36Source09/07/2026
Sail ResearchVia OpenRoutersail-research/fp4$1.32$3.96Source09/07/2026
SiliconFlowVia OpenRoutersiliconflow/fp8$1.32$3.96Source09/07/2026
StreamLakeVia OpenRouterstreamlake$1.1207$3.362Source09/07/2026
TogetherVia OpenRoutertogether$1.32$3.96Source09/07/2026

Performance

Shared benchmarks

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.

255075100CodingReasoningMathematicsKnowledgeFinanceLegalAgentic tasksHealth
GPT-5.4 mini
DeepSeek-V4-Pro
Coding: 78.7 / 99.9 (7 benchmark families)
Reasoning: 96.2 / 99.9 (2 benchmark families)
Mathematics: 98.5 / 100 (1 benchmark family)
Knowledge: 97.8 / 100 (2 benchmark families)
Finance: 97.2 / 99.3 (5 benchmark families)
Legal: 51 / 100 (3 benchmark families)
Agentic tasks: 90 / 95.9 (1 benchmark family)
Health: 97.8 / 100 (1 benchmark family)

47 matched rows from 17 benchmark families were considered. The radar shows 8 of 10 comparable categories.

GPT-5.4 miniDeepSeek-V4-Pro
Code MigrationOverall. Higher is better. No documented setup difference
GPT-5.4 mini12.936 %
DeepSeek-V4-ProWinner26.201 %
CorpFin v2Overall. Higher is better. No documented setup difference
GPT-5.4 mini60.917 %
DeepSeek-V4-ProWinner61.383 %
EMBOverall. Higher is better. No documented setup difference
GPT-5.4 mini45.426 %
DeepSeek-V4-ProWinner51.623 %
Finance Agent (v2)Overall. Higher is better. No documented setup difference
GPT-5.4 miniWinner45.36 %
DeepSeek-V4-Pro44.083 %
GPQA DiamondOverall. Higher is better. No documented setup difference
GPT-5.4 mini83.08 %
DeepSeek-V4-ProWinner89.394 %
Harvey's Legal Agent BenchmarkOverall · Task fully resolved. Higher is better. No documented setup difference
GPT-5.4 mini0 %
DeepSeek-V4-ProWinner3.75 %
IOIOverall. Higher is better. No documented setup difference
GPT-5.4 mini6.417 %
DeepSeek-V4-ProWinner35.833 %
Legal Research BenchOverall · All-pass. Higher is better. No documented setup difference
GPT-5.4 mini12.5 %
DeepSeek-V4-ProWinner23.077 %
LiveCodeBench v6Overall. Higher is better. No documented setup difference
GPT-5.4 mini81.465 %
DeepSeek-V4-ProWinner87.484 %
LMArena Text, Style ControlOverall. Higher is better. Test setup not documented as identical
GPT-5.4 mini1,448.118
DeepSeek-V4-ProHigher measured value1,457.748
MMLU-ProOverall. Higher is better. No documented setup difference
GPT-5.4 mini84.554 %
DeepSeek-V4-ProWinner87.249 %
ProgramBenchOverall. Higher is better. No documented setup difference
GPT-5.4 miniTie0 %
DeepSeek-V4-ProTie0 %

Key to the marks:better valuebetter, but not conclusivetie

Benchmark scores for GPT-5.4 mini and DeepSeek-V4-Pro
Benchmark and taskGPT-5.4 miniDeepSeek-V4-ProSource
Code MigrationOverall
Test details
No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
12.936 %
Winner26.201 %
Vals AI
Source details
Data as of: 09/03/2026
CorpFin v2Overall
Test details
No documented difference in the test setupVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
60.917 %
Winner61.383 %
Vals AI
Source details
Data as of: 08/12/2026
EMBOverall
Test details
No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
45.426 %
Winner51.623 %
Vals AI
Source details
Data as of: 09/03/2026
Finance Agent (v2)Overall
Test details
No documented difference in the test setupVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
Winner45.36 %
44.083 %
Vals AI
Source details
Data as of: 09/03/2026
GPQA DiamondOverall
Test details
No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
83.08 %
Winner89.394 %
Vals AI
Source details
Data as of: 09/01/2026
Harvey's Legal Agent BenchmarkOverall · Task fully resolved
Test details
No documented difference in the test setupVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
0 %
Winner3.75 %
Vals AI
Source details
Data as of: 09/03/2026
IOIOverall
Test details
No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
6.417 %
Winner35.833 %
Vals AI
Source details
Data as of: 08/09/2026
Legal Research BenchOverall · All-pass
Test details
No documented difference in the test setupVersion: 1Metric: all-pass rateScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
12.5 %
Winner23.077 %
Vals AI
Source details
Data as of: 09/03/2026
LiveCodeBench v6Overall
Test details
No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
81.465 %
Winner87.484 %
Vals AI
Source details
Data as of: 09/01/2026
LMArena Text, Style ControlOverall
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-high, Reasoning: high, Harness: Arena text, style control
DeepSeek-V4-Pro: Snapshot: deepseek-v4-pro, Harness: Arena text, style controlGPT-5.4 mini: Style-controlled Arena rating from 59,472 anonymous pairwise votes.DeepSeek-V4-Pro: Style-controlled Arena rating from 54,243 anonymous pairwise votes.
1,448.118
95% confidence interval: ±3.851The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Higher measured value1,457.748
95% confidence interval: ±4.009The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
MMLU-ProOverall
Test details
No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
84.554 %
Winner87.249 %
Vals AI
Source details
Data as of: 09/01/2026
ProgramBenchOverall
Test details
No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
Tie0 %
Tie0 %
Vals AI
Source details
Data as of: 09/01/2026
SWE-bench VerifiedOverall
Test details
No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
73 %
Winner77.4 %
Vals AI
Source details
Data as of: 09/01/2026
TaxEval v2Overall
Test details
No documented difference in the test setupVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
71.218 %
Winner72.077 %
Vals AI
Source details
Data as of: 09/01/2026
Terminal-Bench 2.0Overall
Test details
No documented difference in the test setupVersion: 2.0Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
44.944 %
Winner56.18 %
Vals AI
Source details
Data as of: 06/04/2026
Terminal-Bench 2.1Overall
Test details
No documented difference in the test setupVersion: 2.1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
Winner54.682 %
50.187 %
Vals AI
Source details
Data as of: 09/03/2026
Vals IndexOverall
Test details
No documented difference in the test setupVersion: 2Metric: weighted index scoreScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
39.632 %
Winner42.888 %
Vals AI
Source details
Data as of: 09/03/2026
Vibe Code Bench v1.1Overall
Test details
No documented difference in the test setupVersion: 1.1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Harness: OpenHands
DeepSeek-V4-Pro: Harness: OpenHands
47.969 %
Winner49.931 %
Vals AI
Source details
Data as of: 09/03/2026
Code MigrationCLI
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
8.2 %
Higher measured value15.47 %
Vals AI
Source details
Data as of: 08/09/2026
CorpFin v2Exact Pages
Test details
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 128,000 tokens
Higher measured value61.538 %
59.207 %
Vals AI
Source details
Data as of: 08/06/2026
EMBComps
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
40.488 %
Higher measured value57.434 %
Vals AI
Source details
Data as of: 08/06/2026
Finance Agent (v2)Adjustments
Test details
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
Higher measured value45.366 %
41.586 %
Vals AI
Source details
Data as of: 08/06/2026
GPQA DiamondFew-Shot CoT
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 256,000 tokens
84.848 %
Higher measured value90.404 %
Vals AI
Source details
Data as of: 08/09/2026
IOIIOI 2024
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 256,000 tokens
6.667 %
Higher measured value31.333 %
Vals AI
Source details
Data as of: 08/09/2026
Legal Research BenchAdministrative / Regulatory · All-pass
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: all-pass rateScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
15.152 %
Higher measured value28.788 %
Vals AI
Source details
Data as of: 08/06/2026
LiveCodeBench v6Easy
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 128,000 tokens
97.826 %
Higher measured value98.758 %
Vals AI
Source details
Data as of: 08/09/2026
LMArena Text, Style ControlOverall
Test details
No documented difference in the test setupNo clear leadVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-high, Reasoning: high, Harness: Arena text, style control
DeepSeek-V4-Pro: Snapshot: deepseek-v4-pro-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.4 mini: Style-controlled Arena rating from 59,472 anonymous pairwise votes.DeepSeek-V4-Pro: Style-controlled Arena rating from 51,599 anonymous pairwise votes.
1,448.118
95% confidence interval: ±3.851The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
No clear lead1,455.047
95% confidence interval: ±4.08The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
MMLU-ProBiology
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 256,000 tokens
91.353 %
Higher measured value92.887 %
Vals AI
Source details
Data as of: 08/09/2026
ProgramBenchAlmost Resolved
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
Higher measured value3 %
0 %
Vals AI
Source details
Data as of: 08/09/2026
SWE-bench Verified<15 min fix
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 256,000 tokens
85.567 %
Higher measured value87.629 %
Vals AI
Source details
Data as of: 08/08/2026
TaxEval v2Correctness
Test details
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 128,000 tokens
Higher measured value63.042 %
60.589 %
Vals AI
Source details
Data as of: 08/09/2026
Terminal-Bench 2.0Easy
Test details
Test setup not documented as identicalNo direct winnerVersion: 2.0Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: high, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Output limit: 128,000 tokens
No direct winner75 %
No direct winner75 %
Vals AI
Source details
Data as of: 06/04/2026
Terminal-Bench 2.1Easy
Test details
Test setup not documented as identicalNo direct winnerVersion: 2.1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: high, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Output limit: 128,000 tokens
Higher measured value75 %
66.667 %
Vals AI
Source details
Data as of: 08/06/2026
Vals IndexCorpFin v2
Test details
Test setup not documented as identicalNo direct winnerVersion: 1.2Metric: benchmark scoreScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 128,000 tokens
60.256 %
Higher measured value61.888 %
Vals AI
Source details
Data as of: 08/09/2026
Code MigrationCOBOL
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
27.143 %
Higher measured value58.393 %
Vals AI
Source details
Data as of: 08/09/2026
CorpFin v2Max Fitting Context
Test details
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 128,000 tokens
60.956 %
Higher measured value63.054 %
Vals AI
Source details
Data as of: 08/06/2026
EMBDataroom
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
48.286 %
Higher measured value62.572 %
Vals AI
Source details
Data as of: 08/06/2026
Finance Agent (v2)All-Pass
Test details
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
Higher measured value32.369 %
31.448 %
Vals AI
Source details
Data as of: 08/06/2026
GPQA DiamondZero-Shot CoT
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 256,000 tokens
81.313 %
Higher measured value88.384 %
Vals AI
Source details
Data as of: 08/09/2026
IOIIOI 2025
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 256,000 tokens
6.167 %
Higher measured value40.333 %
Vals AI
Source details
Data as of: 08/09/2026
Legal Research BenchAdministrative / Regulatory · Weighted partial credit
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: weighted partial-credit scoreScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
69.72 %
Higher measured value83.372 %
Vals AI
Source details
Data as of: 08/06/2026
LiveCodeBench v6Hard
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 128,000 tokens
61.714 %
Higher measured value72.571 %
Vals AI
Source details
Data as of: 08/09/2026
LMArena Text, Style ControlBusiness, management and finance
Test details
Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-high, Reasoning: high, Harness: Arena text, style control
DeepSeek-V4-Pro: Snapshot: deepseek-v4-pro, Harness: Arena text, style controlGPT-5.4 mini: Style-controlled Arena rating from 12,113 anonymous pairwise votes.DeepSeek-V4-Pro: Style-controlled Arena rating from 10,742 anonymous pairwise votes.
1,459.508
95% confidence interval: ±6.653The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
Higher measured value1,461.034
95% confidence interval: ±6.908The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
MMLU-ProBusiness
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 256,000 tokens
89.734 %
Higher measured value91.888 %
Vals AI
Source details
Data as of: 08/09/2026
ProgramBenchFully Resolved
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
No direct winner0 %
No direct winner0 %
Vals AI
Source details
Data as of: 08/09/2026
SWE-bench Verified>4 hours
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 256,000 tokens
No direct winner0 %
No direct winner0 %
Vals AI
Source details
Data as of: 08/08/2026
TaxEval v2Stepwise Reasoning
Test details
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 128,000 tokens
79.395 %
Higher measured value83.565 %
Vals AI
Source details
Data as of: 08/09/2026
Terminal-Bench 2.0Hard
Test details
Test setup not documented as identicalNo direct winnerVersion: 2.0Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: high, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Output limit: 128,000 tokens
24.444 %
Higher measured value33.333 %
Vals AI
Source details
Data as of: 06/04/2026
Terminal-Bench 2.1Hard
Test details
Test setup not documented as identicalNo direct winnerVersion: 2.1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: high, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Output limit: 128,000 tokens
Higher measured value34.444 %
31.111 %
Vals AI
Source details
Data as of: 08/06/2026
Vals IndexFinance Agent v2
Test details
Test setup not documented as identicalNo direct winnerVersion: 1.2Metric: benchmark scoreScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
Higher measured value45.407 %
44.081 %
Vals AI
Source details
Data as of: 08/09/2026
Code MigrationCode Quality
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: mean reviewer code-quality ratingScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
3.053 / 5
Higher measured value3.401 / 5
Vals AI
Source details
Data as of: 08/09/2026
CorpFin v2Shared Max Context
Test details
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 128,000 tokens
60.256 %
Higher measured value61.888 %
Vals AI
Source details
Data as of: 08/06/2026
EMBDCF
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
40.605 %
Higher measured value44.435 %
Vals AI
Source details
Data as of: 08/06/2026
Finance Agent (v2)Comparables
Test details
Test setup not documented as identicalNo direct winnerVersion: 2Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
Higher measured value40.273 %
39.632 %
Vals AI
Source details
Data as of: 08/06/2026
Legal Research BenchBusiness & Commercial · All-pass
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: all-pass rateScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
11.628 %
Higher measured value23.256 %
Vals AI
Source details
Data as of: 08/06/2026
LiveCodeBench v6Medium
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 128,000 tokens
84.856 %
Higher measured value91.123 %
Vals AI
Source details
Data as of: 08/09/2026
LMArena Text, Style ControlBusiness, management and finance
Test details
No documented difference in the test setupNo clear leadVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-high, Reasoning: high, Harness: Arena text, style control
DeepSeek-V4-Pro: Snapshot: deepseek-v4-pro-high-preview, Reasoning: high, Harness: Arena text, style controlGPT-5.4 mini: Style-controlled Arena rating from 12,113 anonymous pairwise votes.DeepSeek-V4-Pro: Style-controlled Arena rating from 10,411 anonymous pairwise votes.
No clear lead1,459.508
95% confidence interval: ±6.653The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.
1,448.251
95% confidence interval: ±6.986The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.		LMArena
Source details
Data as of: 09/01/2026
MMLU-ProChemistry
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 256,000 tokens
89.134 %
Higher measured value92.491 %
Vals AI
Source details
Data as of: 08/09/2026
ProgramBenchRaw Pass Rate
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
Higher measured value54.375 %
47.778 %
Vals AI
Source details
Data as of: 08/09/2026
SWE-bench Verified1-4 hours
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 256,000 tokens
33.333 %
Higher measured value45.238 %
Vals AI
Source details
Data as of: 08/08/2026
Terminal-Bench 2.0Medium
Test details
Test setup not documented as identicalNo direct winnerVersion: 2.0Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: high, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Output limit: 128,000 tokens
53.939 %
Higher measured value67.273 %
Vals AI
Source details
Data as of: 06/04/2026
Terminal-Bench 2.1Medium
Test details
Test setup not documented as identicalNo direct winnerVersion: 2.1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: high, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Output limit: 128,000 tokens
Higher measured value64.242 %
59.394 %
Vals AI
Source details
Data as of: 08/06/2026
Vals IndexSWE-bench
Test details
No documented difference in the test setupVersion: 1.2Metric: benchmark scoreScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17
67.647 %
Winner75.49 %
Vals AI
Source details
Data as of: 08/09/2026
EMBLBO
Test details
Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17, Reasoning: xhigh, Output limit: 128,000 tokens
DeepSeek-V4-Pro: Reasoning: max, Output limit: 384,000 tokens
41.608 %
Higher measured value43.938 %
Vals AI
Source details
Data as of: 08/06/2026

Key to the marks:better valuebetter, but not conclusivetie

How to read this comparison

Winning one benchmark is not an overall verdict

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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