Head-to-head comparison

GPT-5.4 mini vs. Kimi K3

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

shared result series: 136
distinct benchmarks: 20
latest retrieval: 2026-09-04

First modelSecond model

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 Kimi K3
Attribute	GPT-5.4 mini	Kimi K3
Provider	OpenAI	Moonshot AI
Released	Mar 2026	Jul 16, 2026
Availability	Active	Active
Model type	Proprietary	Open Weights
Parameters	Not published	2.8T, 104B active
Architecture	Not published	Mixture of Experts
Context window	400,000 tokens	1,048,576 tokens
Knowledge cutoff	August 31, 2025	Not published
Technical sources	Model	Model

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 Kimi K3
Price type	GPT-5.4 mini	Kimi K3
API input	$0.75	$3
API output	$4.5	$15
Cache read	$0.07	$0.3
Cache write (5 min.)	Not listed	Not listed
Cache write (1 hr.)	Not listed	Not listed
Price verified	07/30/2026 Source	07/30/2026 Source

GPT-5.4 miniKimi K3

API inputUSD per 1M tokens, base tier

GPT-5.4 mini$0.75

Kimi K3$3

API outputUSD per 1M tokens, base tier

GPT-5.4 mini$4.5

Kimi K3$15

Cache readUSD per 1M tokens, base tier

GPT-5.4 mini$0.075

Kimi K3$0.3

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 Kimi K3
Model	Provider	Purchase route and tariff	Input per 1M tokens	Output per 1M tokens	Source
GPT-5.4 mini	OpenAI	Direct from developerStandard API	$0.75	$4.5	Source07/30/2026
	Azure	Via OpenRouterazure	$0.75	$4.5	Source09/07/2026
	Azure	Via OpenRouterazure/us	$0.825	$4.95	Source09/07/2026
	OpenAI	Via OpenRouteropenai	$0.75	$4.5	Source09/07/2026
	OpenAI	Via OpenRouteropenai/fast	$1.5	$9	Source09/07/2026
	OpenAI	Via OpenRouteropenai/flex	Lowest listed price: $0.375	Lowest listed price: $2.25	Source09/07/2026
Kimi K3	Moonshot AI	Direct from developerStandard API	$3	$15	Source07/30/2026
	Alibaba	Via OpenRouteralibaba	$3.45	$17.25	Source09/07/2026
	BaseTen	Via OpenRouterbaseten/fp8	$3	$15	Source09/07/2026
	Chutes	Via OpenRouterchutes/mxfp4	$3	$15	Source09/07/2026
	DeepInfra	Via OpenRouterdeepinfra/bf16	$2.85	$14.25	Source09/07/2026
	DigitalOcean	Via OpenRouterdigitalocean	$2.85	$14.25	Source09/07/2026
	Fireworks	Via OpenRouterfireworks	$3	$15	Source09/07/2026
	Fireworks	Via OpenRouterfireworks/fast	$4.5	$22.5	Source09/07/2026
	Fireworks	Via OpenRouterfireworks/us	$3.3	$16.5	Source09/07/2026
	Makora	Via OpenRoutermakora	Lowest listed price: $2.55	Lowest listed price: $12.75	Source09/07/2026
	Modal	Via OpenRoutermodal/mxfp4	$3	$15	Source09/07/2026
	Moonshot AI	Via OpenRoutermoonshotai/mxfp4	$3	$15	Source09/07/2026
	Morph	Via OpenRoutermorph/fast	$6	$22.5	Source09/07/2026
	Morph	Via OpenRoutermorph/fp4	$2.6	$14	Source09/07/2026
	Parasail	Via OpenRouterparasail/fp4	$3	$15	Source09/07/2026
	Phala	Via OpenRouterphala	$3	$15	Source09/07/2026
	Sail Research	Via OpenRoutersail-research/fp4	$2.6	$13	Source09/07/2026
	Together	Via OpenRoutertogether	$3	$15	Source09/07/2026
	Wafer	Via OpenRouterwafer	$3	Lowest listed price: $12.75	Source09/07/2026

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.

GPT-5.4 mini

Kimi K3

Coding: 61.7 / 100 (5 benchmark families)

Reasoning: 89.4 / 100 (1 benchmark family)

Knowledge: 96.1 / 100 (1 benchmark family)

Finance: 85.4 / 100 (5 benchmark families)

Legal: 14.1 / 100 (2 benchmark families)

Agentic tasks: 67.6 / 100 (1 benchmark family)

Multimodal: 89.9 / 100 (1 benchmark family)

Education: 93.6 / 100 (1 benchmark family)

21 matched rows from 19 benchmark families were considered. The radar shows 8 of 9 comparable categories.

GPT-5.4 miniKimi K3

Code MigrationOverall. Higher is better. No documented setup difference

GPT-5.4 mini12.936 %

Kimi K316.099 %

CorpFin v2Overall. Higher is better. No documented setup difference

GPT-5.4 mini60.917 %

Kimi K371.562 %

EMBOverall. Higher is better. No documented setup difference

GPT-5.4 mini45.426 %

Kimi K366.399 %

Finance Agent (v2)Overall. Higher is better. No documented setup difference

GPT-5.4 mini45.36 %

Kimi K354.36 %

GPQA DiamondOverall. Higher is better. No documented setup difference

GPT-5.4 mini83.08 %

Kimi K392.929 %

Harvey's Legal Agent BenchmarkOverall · Task fully resolved. Higher is better. No documented setup difference

GPT-5.4 mini0 %

Kimi K310.833 %

Legal Research BenchOverall · All-pass. Higher is better. No documented setup difference

GPT-5.4 mini12.5 %

Kimi K344.231 %

LiveCodeBench v6Overall. Higher is better. No documented setup difference

GPT-5.4 mini81.465 %

Kimi K387.185 %

LMArena Text, Style ControlOverall. Higher is better. Test setup not documented as identical

GPT-5.4 mini1,448.118

Kimi K31,489.017

MMLU-ProOverall. Higher is better. No documented setup difference

GPT-5.4 mini84.554 %

Kimi K387.973 %

MMMU-ProOverall. Higher is better. No documented setup difference

GPT-5.4 mini79.249 %

Kimi K388.15 %

MortgageTaxOverall. Higher is better. No documented setup difference

GPT-5.4 mini63.514 %

Kimi K366.336 %

Key to the marks:better valuebetter, but not conclusivetie

Benchmark scores for GPT-5.4 mini and Kimi K3
Benchmark and task	GPT-5.4 mini	Kimi K3	Source
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 %	Winner16.099 %	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 %	Winner71.562 %	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 %	Winner66.399 %	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	45.36 %	Winner54.36 %	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 %	Winner92.929 %	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 %	Winner10.833 %	Vals AI Source details Data as of: 09/03/2026
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 %	Winner44.231 %	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 %	Winner87.185 %	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 Kimi K3: Snapshot: kimi-k3-max, Reasoning: max, Harness: Arena text, style controlGPT-5.4 mini: Style-controlled Arena rating from 59,472 anonymous pairwise votes.Kimi K3: Style-controlled Arena rating from 17,895 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 value1,489.017 95% confidence interval: ±5.47The 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 %	Winner87.973 %	Vals AI Source details Data as of: 09/01/2026
MMMU-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	79.249 %	Winner88.15 %	Vals AI Source details Data as of: 09/01/2026
MortgageTaxOverall 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	63.514 %	Winner66.336 %	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	0 %	Winner2 %	Vals AI Source details Data as of: 09/01/2026
SAGEOverall 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	50.813 %	Winner54.26 %	Vals AI Source details Data as of: 09/03/2026
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 %	Winner93.4 %	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 %	Winner75.716 %	Vals AI Source details Data as of: 09/01/2026
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	54.682 %	Winner80.899 %	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 %	Winner57.813 %	Vals AI Source details Data as of: 09/03/2026
Vals Multimodal IndexOverall Test details No documented difference in the test setupVersion: 1.2Metric: weighted index scoreScoring: Higher is betterGPT-5.4 mini: Snapshot: gpt-5.4-mini-2026-03-17	54.219 %	Winner73.42 %	Vals AI Source details Data as of: 08/11/2026
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 Kimi K3: Harness: OpenHands	47.969 %	Winner84.963 %	Vals AI Source details Data as of: 09/03/2026
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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	61.538 %	Higher measured value69.347 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	40.488 %	Higher measured value72.685 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	45.366 %	Higher measured value51.461 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	84.848 %	Higher measured value93.434 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	15.152 %	Higher measured value54.545 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	97.826 %	Higher measured value98.758 %	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 Kimi K3: Snapshot: kimi-k3-max, Reasoning: max, Harness: Arena text, style controlGPT-5.4 mini: Style-controlled Arena rating from 12,113 anonymous pairwise votes.Kimi K3: Style-controlled Arena rating from 3,520 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 value1,489.216 95% confidence interval: ±10.41The 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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	91.353 %	Higher measured value93.863 %	Vals AI Source details Data as of: 08/09/2026
MortgageTaxNumerical Extraction 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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	Higher measured value79.412 %	78.855 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	3 %	Higher measured value17.5 %	Vals AI Source details Data as of: 08/09/2026
SAGEAutomata 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: 30,000 tokens Kimi K3: Temperature: 1, Output limit: 30,000 tokens	41.27 %	Higher measured value44.048 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	85.567 %	Higher measured value92.268 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	63.042 %	Higher measured value65.331 %	Vals AI Source details Data as of: 08/09/2026
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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	75 %	Higher measured value91.667 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	60.256 %	Higher measured value72.611 %	Vals AI Source details Data as of: 08/09/2026
Vals Multimodal 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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	60.256 %	Higher measured value72.611 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	60.956 %	Higher measured value72.727 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	48.286 %	Higher measured value85.13 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	32.369 %	Higher measured value41.69 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	81.313 %	Higher measured value92.424 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	69.72 %	Higher measured value90.731 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	61.714 %	Higher measured value74.286 %	Vals AI Source details Data as of: 08/09/2026
LMArena Text, Style ControlChinese 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 Kimi K3: Snapshot: kimi-k3-max, Reasoning: max, Harness: Arena text, style controlGPT-5.4 mini: Style-controlled Arena rating from 3,298 anonymous pairwise votes.Kimi K3: Style-controlled Arena rating from 1,168 anonymous pairwise votes.	1,477.451 95% confidence interval: ±11.125The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,528.536 95% confidence interval: ±17.657The 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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	89.734 %	Higher measured value92.015 %	Vals AI Source details Data as of: 08/09/2026
MortgageTaxSemantic Extraction 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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	47.615 %	Higher measured value53.816 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value2 %	Vals AI Source details Data as of: 08/09/2026
SAGECalculus 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: 30,000 tokens Kimi K3: Temperature: 1, Output limit: 30,000 tokens	59.259 %	Higher measured value75.617 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value66.667 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	79.395 %	Higher measured value86.1 %	Vals AI Source details Data as of: 08/09/2026
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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	34.444 %	Higher measured value74.444 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	45.407 %	Higher measured value55.882 %	Vals AI Source details Data as of: 08/09/2026
Vals Multimodal 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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	45.407 %	Higher measured value55.882 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	60.256 %	Higher measured value72.611 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	40.605 %	Higher measured value58.877 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	40.273 %	Higher measured value46.691 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	11.628 %	Higher measured value46.512 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	84.856 %	Higher measured value88.512 %	Vals AI Source details Data as of: 08/09/2026
LMArena Text, Style ControlCoding 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 Kimi K3: Snapshot: kimi-k3-max, Reasoning: max, Harness: Arena text, style controlGPT-5.4 mini: Style-controlled Arena rating from 16,204 anonymous pairwise votes.Kimi K3: Style-controlled Arena rating from 4,669 anonymous pairwise votes.	1,495.819 95% confidence interval: ±6.028The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,541.739 95% confidence interval: ±9.193The 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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	89.134 %	Higher measured value91.784 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	54.375 %	Higher measured value62.768 %	Vals AI Source details Data as of: 08/09/2026
SAGELinear Algebra 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: 30,000 tokens Kimi K3: Temperature: 1, Output limit: 30,000 tokens	71.486 %	Higher measured value72.701 %	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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	33.333 %	Higher measured value92.857 %	Vals AI Source details Data as of: 08/08/2026
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 Kimi K3: Temperature: 1, Output limit: 262,144 tokens	64.242 %	Higher measured value83.636 %	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 %	Winner95.098 %	Vals AI Source details Data as of: 08/09/2026
Key to the marks:better valuebetter, but not conclusivetie

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