Head-to-head comparison

Grok 4.6 vs. Kimi K2.6

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

shared result series: 43
distinct benchmarks: 21
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 Grok 4.6 and Kimi K2.6
Attribute	Grok 4.6	Kimi K2.6
Provider	xAI	Moonshot AI
Released	Aug 12, 2026	Apr 20, 2026
Availability	Active	Active
Model type	Proprietary	Open Weights
Parameters	Not published	1T, 32B active
Architecture	Not published	Mixture of Experts
Context window	500,000 tokens	262,144 tokens
Knowledge cutoff	February 1, 2026	Not published
Technical sources	Model	Model, 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 Grok 4.6 and Kimi K2.6
Price type	Grok 4.6	Kimi K2.6
API input	$2 ≤200K / $4 >200K	$0.95
API output	$6 ≤200K / $12 >200K	$4
Cache read	$0.5 ≤200K / $1 >200K	$0.16
Cache write (5 min.)	Not listed	Not listed
Cache write (1 hr.)	Not listed	Not listed
Price verified	08/16/2026 Source	07/30/2026 Source

Grok 4.6Kimi K2.6

API inputUSD per 1M tokens, base tier

Grok 4.6$2

Kimi K2.6$0.95

API outputUSD per 1M tokens, base tier

Grok 4.6$6

Kimi K2.6$4

Cache readUSD per 1M tokens, base tier

Grok 4.6$0.5

Kimi K2.6$0.16

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 Grok 4.6 and Kimi K2.6
Model	Provider	Purchase route and tariff	Input per 1M tokens	Output per 1M tokens	Source
Grok 4.6	xAI	Direct from developerUp to 200,000 context tokens	Lowest listed price: $2	Lowest listed price: $6	Source08/16/2026
	xAI	Direct from developerAbove 200,000 context tokens	$4	$12	Source08/16/2026
	Amazon Bedrock	Via OpenRouteramazon-bedrock/us-west-2	$2.2	$6.6	Source09/08/2026
	xAI	Via OpenRouterxai	Lowest listed price: $2	Lowest listed price: $6	Source09/08/2026
	xAI	Via OpenRouterxai/priority	$4	$12	Source09/08/2026
	xAI	Via OpenRouterxai/zdr	Lowest listed price: $2	Lowest listed price: $6	Source09/08/2026
	xAI	Via OpenRouterxai/zdr/priority	$4	$12	Source09/08/2026
Kimi K2.6	Moonshot AI	Direct from developerStandard API	$0.95	$4	Source07/30/2026
	AtlasCloud	Via OpenRouteratlas-cloud/int4	$0.95	$4	Source09/08/2026
	Baidu	Via OpenRouterbaidu/fp4	$0.95	$4	Source09/08/2026
	BaseTen	Via OpenRouterbaseten/fp4#1	$0.95	$4	Source09/08/2026
	BaseTen	Via OpenRouterbaseten/fp4#2	$0.95	$4	Source09/08/2026
	Chutes	Via OpenRouterchutes/int4	Lowest listed price: $0.58	$3.4	Source09/08/2026
	Cloudflare	Via OpenRoutercloudflare	$0.95	$4	Source09/08/2026
	CoreWeave	Via OpenRoutercoreweave/fp4	$0.65	$3.41	Source09/08/2026
	Crusoe	Via OpenRoutercrusoe/bf16	$0.7	$3.5	Source09/08/2026
	Decart	Via OpenRouterdecart/fp4	$0.5865	Lowest listed price: $2.4696	Source09/08/2026
	DeepInfra	Via OpenRouterdeepinfra/fp4	$0.75	$3.5	Source09/08/2026
	DigitalOcean	Via OpenRouterdigitalocean	$0.95	$4	Source09/08/2026
	Fireworks	Via OpenRouterfireworks	$0.95	$4	Source09/08/2026
	GMICloud	Via OpenRoutergmicloud/fp8	$0.855	$3.6	Source09/08/2026
	Inceptron	Via OpenRouterinceptron/int4	$0.62	$3.39	Source09/08/2026
	Moonshot AI	Via OpenRoutermoonshotai/int4	$0.95	$4	Source09/08/2026
	Novita	Via OpenRouternovita	$0.8	$3.4	Source09/08/2026
	Parasail	Via OpenRouterparasail/int4	$0.75	$3.5	Source09/08/2026
	Phala	Via OpenRouterphala	$1.09	$4.6	Source09/08/2026
	SiliconFlow	Via OpenRoutersiliconflow/fp8	$0.77	$3.4	Source09/08/2026
	StreamLake	Via OpenRouterstreamlake/fp8	$0.5985	$2.52	Source09/08/2026
	Venice	Via OpenRoutervenice/int4	$0.75	$3.5	Source09/08/2026

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.

Grok 4.6

Kimi K2.6

Coding: 100 / 72.5 (4 benchmark families)

Reasoning: 100 / 94.1 (1 benchmark family)

Knowledge: 100 / 98 (1 benchmark family)

Finance: 98.4 / 95.2 (5 benchmark families)

Legal: 100 / 47.2 (3 benchmark families)

Agentic tasks: 100 / 68.4 (1 benchmark family)

Productivity: 100 / 84.7 (1 benchmark family)

Health: 100 / 90 (2 benchmark families)

20 matched rows from 20 benchmark families were considered. The radar shows 8 of 10 comparable categories.

Grok 4.6Kimi K2.6

Code MigrationOverall. Higher is better. No documented setup difference

Grok 4.644.572 %

Kimi K2.627.768 %

CorpFin v2Overall. Higher is better. No documented setup difference

Grok 4.666.161 %

Kimi K2.666.744 %

EMBOverall. Higher is better. No documented setup difference

Grok 4.662.727 %

Kimi K2.657.855 %

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

Grok 4.653.682 %

Kimi K2.644.899 %

GPQA DiamondOverall. Higher is better. No documented setup difference

Grok 4.694.697 %

Kimi K2.689.142 %

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

Grok 4.615.833 %

Kimi K2.61.667 %

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

Grok 4.648.077 %

Kimi K2.615.865 %

LegalBenchOverall. Higher is better. No documented setup difference

Grok 4.686.307 %

Kimi K2.684.738 %

LiveCodeBench v6Overall. Higher is better. No documented setup difference

Grok 4.688.224 %

Kimi K2.686.771 %

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

Grok 4.61,461.115

Kimi K2.61,460.613

MedCodeOverall. Higher is better. No documented setup difference

Grok 4.644.712 %

Kimi K2.640.142 %

MedScribeOverall. Higher is better. No documented setup difference

Grok 4.686.534 %

Kimi K2.678.149 %

Key to the marks:better valuebetter, but not conclusivetie

Benchmark scores for Grok 4.6 and Kimi K2.6
Benchmark and task	Grok 4.6	Kimi K2.6	Source
Code MigrationOverall Test details No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better	Winner44.572 %	27.768 %	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 better	66.161 %	Winner66.744 %	Vals AI Source details Data as of: 08/12/2026
EMBOverall Test details No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better	Winner62.727 %	57.855 %	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 better	Winner53.682 %	44.899 %	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 better	Winner94.697 %	89.142 %	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 better	Winner15.833 %	1.667 %	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 better	Winner48.077 %	15.865 %	Vals AI Source details Data as of: 09/03/2026
LegalBenchOverall Test details No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better	Winner86.307 %	84.738 %	Vals AI Source details Data as of: 09/01/2026
LiveCodeBench v6Overall Test details No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better	Winner88.224 %	86.771 %	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 betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 3,453 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 37,573 anonymous pairwise votes.	Higher measured value1,461.115 95% confidence interval: ±10.144The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,460.613 95% confidence interval: ±4.534The 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
MedCodeOverall Test details No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better	Winner44.712 %	40.142 %	Vals AI Source details Data as of: 09/03/2026
MedScribeOverall Test details No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better	Winner86.534 %	78.149 %	Vals AI Source details Data as of: 09/03/2026
MMLU-ProOverall Test details No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better	Winner89.4 %	87.572 %	Vals AI Source details Data as of: 09/01/2026
MortgageTaxOverall Test details No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better	64.189 %	Winner65.818 %	Vals AI Source details Data as of: 09/01/2026
Public Benefits Bench v1.1Overall Test details No documented difference in the test setupVersion: 1.1Metric: accuracyScoring: Higher is better	Winner66.847 %	56.631 %	Vals AI Source details Data as of: 09/01/2026
SAGEOverall Test details No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better	28.9 %	Winner50.224 %	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 better	Winner95.6 %	76.2 %	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 better	71.096 %	Winner74.652 %	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 better	Winner78.277 %	53.558 %	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 better	Winner59.167 %	43.465 %	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 betterSettings: Harness: OpenHands	Winner76.239 %	37.891 %	Vals AI Source details Data as of: 09/03/2026
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 betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 705 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 7,489 anonymous pairwise votes.	Higher measured value1,467.318 95% confidence interval: ±22.146The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,455.777 95% confidence interval: ±7.725The 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
LMArena Text, Style ControlChinese Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 291 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 1,900 anonymous pairwise votes.	Higher measured value1,538.386 95% confidence interval: ±33.69The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,526.043 95% confidence interval: ±14.272The 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
LMArena Text, Style ControlCoding Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 838 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 10,419 anonymous pairwise votes.	1,510.751 95% confidence interval: ±20.826The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,514.216 95% confidence interval: ±7.05The 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
LMArena Text, Style ControlCreative writing Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 651 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 5,846 anonymous pairwise votes.	Higher measured value1,458.096 95% confidence interval: ±23.926The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,430.943 95% confidence interval: ±8.493The 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
LMArena Text, Style ControlEnglish Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 1,434 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 17,189 anonymous pairwise votes.	1,459.46 95% confidence interval: ±15.407The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,467.466 95% confidence interval: ±5.735The 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
LMArena Text, Style ControlEntertainment, sports and media Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 777 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 7,644 anonymous pairwise votes.	Higher measured value1,443.149 95% confidence interval: ±21.821The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,427.512 95% confidence interval: ±7.76The 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
LMArena Text, Style ControlExcluding ties Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 2,522 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 27,810 anonymous pairwise votes.	Higher measured value1,465.128 95% confidence interval: ±14.002The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,464.238 95% confidence interval: ±5.929The 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
LMArena Text, Style ControlExpert prompts Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 401 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 3,516 anonymous pairwise votes.	1,479.844 95% confidence interval: ±28.841The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,501.44 95% confidence interval: ±10.353The 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
LMArena Text, Style ControlHard prompts Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 2,312 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 24,328 anonymous pairwise votes.	1,484.219 95% confidence interval: ±12.5The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,484.733 95% confidence interval: ±5.291The 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
LMArena Text, Style ControlHard prompts, English Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 927 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 11,753 anonymous pairwise votes.	1,475.235 95% confidence interval: ±19.394The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,486.948 95% confidence interval: ±6.669The 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
LMArena Text, Style ControlInstruction following Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 1,223 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 12,232 anonymous pairwise votes.	Higher measured value1,458.276 95% confidence interval: ±17.043The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,453.473 95% confidence interval: ±6.475The 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
LMArena Text, Style ControlLegal and government Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 284 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 2,841 anonymous pairwise votes.	Higher measured value1,475.664 95% confidence interval: ±33.128The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,460.627 95% confidence interval: ±11.45The 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
LMArena Text, Style ControlLife, physical and social science Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 512 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 6,229 anonymous pairwise votes.	Higher measured value1,492.359 95% confidence interval: ±25.684The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,476.941 95% confidence interval: ±8.13The 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
LMArena Text, Style ControlLonger queries Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 1,609 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 15,575 anonymous pairwise votes.	Higher measured value1,478.218 95% confidence interval: ±15.132The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,475.676 95% confidence interval: ±6.237The 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
LMArena Text, Style ControlMath Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 216 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 1,936 anonymous pairwise votes.	1,426.012 95% confidence interval: ±40.021The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,478.292 95% confidence interval: ±13.492The 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
LMArena Text, Style ControlMathematical professions Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 212 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 2,051 anonymous pairwise votes.	1,456.037 95% confidence interval: ±39.211The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,484.174 95% confidence interval: ±13.331The 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
LMArena Text, Style ControlMedicine and healthcare Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 225 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 2,701 anonymous pairwise votes.	1,460.477 95% confidence interval: ±37.871The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,469.999 95% confidence interval: ±11.959The 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
LMArena Text, Style ControlMulti-turn Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 569 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 6,558 anonymous pairwise votes.	1,446.12 95% confidence interval: ±25.079The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,459.745 95% confidence interval: ±8.178The 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
LMArena Text, Style ControlNon-English Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 2,019 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 20,384 anonymous pairwise votes.	Higher measured value1,456.123 95% confidence interval: ±13.128The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,449.236 95% confidence interval: ±5.442The 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
LMArena Text, Style ControlRussian Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 413 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 3,817 anonymous pairwise votes.	1,446.297 95% confidence interval: ±28.9The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	Higher measured value1,453.006 95% confidence interval: ±9.898The 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
LMArena Text, Style ControlSoftware and IT services Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 1,379 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 15,076 anonymous pairwise votes.	Higher measured value1,503.685 95% confidence interval: ±16.15The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,503.051 95% confidence interval: ±6.107The 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
LMArena Text, Style ControlWriting, literature and language Test details Test setup not documented as identicalNo direct winnerVersion: style-control-v1Metric: style-controlled Bradley-Terry ratingScoring: Higher is betterGrok 4.6: Snapshot: grok-4.6-high, Reasoning: high, Harness: Arena text, style control Kimi K2.6: Snapshot: kimi-k2.6, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 921 anonymous pairwise votes.Kimi K2.6: Style-controlled Arena rating from 8,865 anonymous pairwise votes.	Higher measured value1,445.223 95% confidence interval: ±19.746The Arena score measures human preference rather than a fixed capability test. The confidence interval and model configuration are part of the result.	1,438.306 95% confidence interval: ±7.246The 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
Key to the marks:better valuebetter, but not conclusivetie

Our model tests

Community tests you can inspect

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.

Grok 4.6

API access was unavailable for this run. The model was not evaluated.

First attempt

Run date: 7 Sept 2026
API provider: openrouter
Requested API model: x-ai/grok-4.6
Pinned endpoint: xAI | x-ai/grok-4.6-20260810
Reasoning setting: high
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.

Kimi K2.6

API access was unavailable for this run. The model was not evaluated.

First attempt

Run date: 7 Sept 2026
API provider: openrouter
Requested API model: moonshotai/kimi-k2.6
Pinned endpoint: Moonshot AI | moonshotai/kimi-k2.6-20260420
Reasoning setting: high
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.

Prompt and test conditions

Generate an SVG of a pelican riding a bicycle

Token limit including reasoning: 8,192 tokens

Task origin (Simon Willison)

How to read this comparison

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