Head-to-head comparison

Grok 4.6 vs. GLM-5.1

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

shared result series: 39
distinct benchmarks: 17
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 GLM-5.1
Attribute	Grok 4.6	GLM-5.1
Provider	xAI	Z.ai
Released	Aug 12, 2026	Apr 7, 2026
Availability	Active	Open Source
Model type	Proprietary	Open Weights
Parameters	Not published	744B, 40B active
Architecture	Not published	Mixture of Experts
Context window	500,000 tokens	200,000 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 GLM-5.1
Price type	Grok 4.6	GLM-5.1
API input	$2 ≤200K / $4 >200K	$1.4
API output	$6 ≤200K / $12 >200K	$4.4
Cache read	$0.5 ≤200K / $1 >200K	$0.26
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 4.6GLM-5.1

API inputUSD per 1M tokens, base tier

Grok 4.6$2

GLM-5.1$1.4

API outputUSD per 1M tokens, base tier

Grok 4.6$6

GLM-5.1$4.4

Cache readUSD per 1M tokens, base tier

Grok 4.6$0.5

GLM-5.1$0.26

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 GLM-5.1
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	Source09/07/2026
	xAI	Via OpenRouterxai	Lowest listed price: $2	Lowest listed price: $6	Source09/07/2026
	xAI	Via OpenRouterxai/priority	$4	$12	Source09/07/2026
	xAI	Via OpenRouterxai/zdr	Lowest listed price: $2	Lowest listed price: $6	Source09/07/2026
	xAI	Via OpenRouterxai/zdr/priority	$4	$12	Source09/07/2026
GLM-5.1	Z.ai	Direct from developerStandard API	$1.4	$4.4	Source07/30/2026
	Alibaba	Via OpenRouteralibaba/fp8	$1.33	$4.18	Source09/07/2026
	AtlasCloud	Via OpenRouteratlas-cloud/fp8	$1.26	$3.96	Source09/07/2026
	Baidu	Via OpenRouterbaidu/fp8	$1.4	$4.4	Source09/07/2026
	Chutes	Via OpenRouterchutes/fp8	$0.98	$3.08	Source09/07/2026
	Crusoe	Via OpenRoutercrusoe/fp8	$1.2	$4.4	Source09/07/2026
	DeepInfra	Via OpenRouterdeepinfra/fp4	$1.05	$3.5	Source09/07/2026
	DigitalOcean	Via OpenRouterdigitalocean	$1.3	$4.3	Source09/07/2026
	Friendli	Via OpenRouterfriendli	$1.4	$4.4	Source09/07/2026
	GMICloud	Via OpenRoutergmicloud/fp8	Lowest listed price: $0.91	Lowest listed price: $2.86	Source09/07/2026
	Nebius	Via OpenRouternebius/fp8	$1.4	$4.4	Source09/07/2026
	Novita	Via OpenRouternovita/fp8	$1.38	$4.4	Source09/07/2026
	Phala	Via OpenRouterphala	$1.21	$4.2	Source09/07/2026
	SiliconFlow	Via OpenRoutersiliconflow/fp8	$1.19	$3.74	Source09/07/2026
	StreamLake	Via OpenRouterstreamlake/fp8	$0.966	$3.036	Source09/07/2026
	Venice	Via OpenRoutervenice/fp8	$1.54	$4.84	Source09/07/2026
	Z.AI	Via OpenRouterz-ai/fp8	$1.4	$4.4	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.

Grok 4.6

GLM-5.1

Coding: 100 / 67.8 (4 benchmark families)

Reasoning: 100 / 89.3 (1 benchmark family)

Knowledge: 100 / 97.2 (1 benchmark family)

Finance: 100 / 93.6 (3 benchmark families)

Legal: 100 / 51.9 (3 benchmark families)

Agentic tasks: 100 / 72.7 (1 benchmark family)

Productivity: 100 / 92.5 (1 benchmark family)

Health: 100 / 88.3 (2 benchmark families)

16 matched rows from 16 benchmark families were considered. The radar shows 8 of 8 comparable categories.

Grok 4.6GLM-5.1

Code MigrationOverall. Higher is better. No documented setup difference

Grok 4.644.572 %

GLM-5.125.768 %

CorpFin v2Overall. Higher is better. No documented setup difference

Grok 4.666.161 %

GLM-5.164.452 %

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

Grok 4.653.682 %

GLM-5.144.792 %

GPQA DiamondOverall. Higher is better. No documented setup difference

Grok 4.694.697 %

GLM-5.184.518 %

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

Grok 4.615.833 %

GLM-5.10 %

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

Grok 4.648.077 %

GLM-5.127.885 %

LegalBenchOverall. Higher is better. No documented setup difference

Grok 4.686.307 %

GLM-5.184.394 %

LiveCodeBench v6Overall. Higher is better. No documented setup difference

Grok 4.688.224 %

GLM-5.181.38 %

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

Grok 4.61,461.115

GLM-5.11,466.019

MedCodeOverall. Higher is better. No documented setup difference

Grok 4.644.712 %

GLM-5.141.604 %

MedScribeOverall. Higher is better. No documented setup difference

Grok 4.686.534 %

GLM-5.172.27 %

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

Grok 4.689.4 %

GLM-5.186.9 %

Key to the marks:better valuebetter, but not conclusivetie

Benchmark scores for Grok 4.6 and GLM-5.1
Benchmark and task	Grok 4.6	GLM-5.1	Source
Code MigrationOverall Test details No documented difference in the test setupVersion: 1Metric: accuracyScoring: Higher is better	Winner44.572 %	25.768 %	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	Winner66.161 %	64.452 %	Vals AI Source details Data as of: 08/12/2026
Finance Agent (v2)Overall Test details No documented difference in the test setupVersion: 2Metric: accuracyScoring: Higher is better	Winner53.682 %	44.792 %	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 %	84.518 %	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 %	0 %	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 %	27.885 %	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 %	84.394 %	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 %	81.38 %	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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 3,453 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 45,403 anonymous pairwise votes.	1,461.115 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.	Higher measured value1,466.019 95% confidence interval: ±3.982The 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 %	41.604 %	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 %	72.27 %	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 %	86.9 %	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 %	61.84 %	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 better	Winner95.6 %	76.4 %	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 better	71.096 %	Winner71.194 %	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 %	56.929 %	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 %	31.456 %	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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 705 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 9,036 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.	1,464.877 95% confidence interval: ±7.07The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 291 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 2,742 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.	1,516.722 95% confidence interval: ±12.084The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 838 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 12,659 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 value1,513.669 95% confidence interval: ±6.252The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 651 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 8,409 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.	1,447.489 95% confidence interval: ±7.46The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 1,434 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 20,248 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 value1,480.022 95% confidence interval: ±5.164The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 777 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 10,350 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.	1,442.227 95% confidence interval: ±6.829The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 2,522 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 34,041 anonymous pairwise votes.	1,465.128 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.	Higher measured value1,472.225 95% confidence interval: ±5.215The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 401 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 4,692 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 value1,495.539 95% confidence interval: ±9.271The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 2,312 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 29,974 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 value1,488.383 95% confidence interval: ±4.664The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 927 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 13,642 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 value1,497.156 95% confidence interval: ±6.069The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 1,223 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 15,738 anonymous pairwise votes.	1,458.276 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.	Higher measured value1,459.874 95% confidence interval: ±5.685The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 284 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 3,614 anonymous pairwise votes.	1,475.664 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.	Higher measured value1,475.668 95% confidence interval: ±10.397The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 512 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 7,449 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.	1,486.607 95% confidence interval: ±7.514The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 1,609 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 20,421 anonymous pairwise votes.	1,478.218 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.	Higher measured value1,481.572 95% confidence interval: ±5.447The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 216 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 2,234 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 value1,476.724 95% confidence interval: ±12.928The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 212 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 2,428 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 value1,477.716 95% confidence interval: ±12.657The 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
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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 225 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 3,296 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 value1,483.9 95% confidence interval: ±11.02The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 569 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 7,394 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 value1,477.368 95% confidence interval: ±7.627The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 2,019 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 25,154 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.	1,450.468 95% confidence interval: ±4.796The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 413 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 4,884 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 value1,461.171 95% confidence interval: ±8.951The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 1,379 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 18,168 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.	1,501.543 95% confidence interval: ±5.397The 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 GLM-5.1: Snapshot: glm-5.1, Harness: Arena text, style controlGrok 4.6: Style-controlled Arena rating from 921 anonymous pairwise votes.GLM-5.1: Style-controlled Arena rating from 11,635 anonymous pairwise votes.	1,445.223 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.	Higher measured value1,454.24 95% confidence interval: ±6.448The 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

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