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Claude Opus 4.1 vs Grok 4.6

Updated October 21, 2026. 59 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Claude Opus 4.1 Replace Grok 4.6
Claude Opus 4.1Anthropic
Coding
27.2
Overall
22.8
Output $/M
$75.00
11
Grok 4.6xAI
Coding
76.4
Overall
44.3
Output $/M
$6.00
48
vs boards won of 59 shared

Decision reading

Pick Grok 4.6 for coding: it scores 76.4 on the Vibe Coding Index against 27.2 for Claude Opus 4.1.

Pick Claude Opus 4.1 when what matters is LMArena Text: coding or LMArena Text: hard prompts in English, where it leads.

Model AClaude Opus 4.1Anthropic27.2/1001 independent benchmarkNo cost per solved taskModel BGrok 4.6xAI76.4/1002 independent benchmarks$0.82 per solved task
Shared results
59
Claude Opus 4.1 only
12
Grok 4.6 only
64
Like-for-like categories
7 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
Claude Opus 4.1 27.2 from 1 benchmark, Grok 4.6 76.4 from 2 benchmarks.
Widest category
Math, 24.1 points apart on average over 5 shared benchmarks.
Widest single gap
FrontierMath, tiers 1 to 3: Claude Opus 4.1 12.6% against Grok 4.6 66.0%, 53.3 points apart on a 0 to 100 scale.
Output price
Claude Opus 4.1 $75.00 against Grok 4.6 $6.00 per million output tokens, 12.5x apart.
Context window
Claude Opus 4.1 takes 200K tokens, Grok 4.6 500K.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryClaude Opus 4.1BarsGrok 4.6Ties
Coding15
Intelligence02
Reasoning17
Math14
Knowledge27
Web design08
General615
All shared boards1148
CodingLike-for-likeFour of these boards feed the Vibe Coding Index15
Coding benchmarks for Claude Opus 4.1 and Grok 4.6
BenchmarkClaude Opus 4.1Grok 4.6Leader
LiveBench codingNot measured89.1%Only Grok 4.6 measured
LMArena WebDev13901617Grok 4.6
AA Coding IndexNot measured76.8Only Grok 4.6 measured
LiveCodeBench (Vals AI)66.5%88.2%Grok 4.6
SWE-bench Verified (Vals AI)Not measured95.6%Only Grok 4.6 measured
Terminal-Bench 4 (Vals AI)Not measured17.2%Only Grok 4.6 measured
Vibe Code Bench (Vals AI)Not measured76.2%Only Grok 4.6 measured
Code migration (Vals AI)Not measured44.6%Only Grok 4.6 measured
ProgramBench (Vals AI)Not measured1.0%Only Grok 4.6 measured
IOI (Vals AI)Not measured47.6%Only Grok 4.6 measured
Terminal-Bench 2.1 (Vals AI)Not measured78.3%Only Grok 4.6 measured
Vibe Code Bench 1-100 (Vals AI)Not measured14.8%Only Grok 4.6 measured
SkillsBench (Vals AI)Not measured55.8%Only Grok 4.6 measured
CyberBench (Vals AI)Not measured67.7%Only Grok 4.6 measured
SciCodeNot measured56.5%Only Grok 4.6 measured
Terminal-Bench38.0%Not measuredOnly Claude Opus 4.1 measured
FrontierCodeNot measured48.0%Only Grok 4.6 measured
FrontierSWENot measured25.3%Only Grok 4.6 measured
WeirdML45.9%67.3%Grok 4.6
Cybench42.0%Not measuredOnly Claude Opus 4.1 measured
ALE-BenchNot measured1508.1Only Grok 4.6 measured
LMArena Text: coding14791466Claude Opus 4.1
LMArena Text: software and IT14561457Grok 4.6
LMArena WebDev: ReactNot measured1631Only Grok 4.6 measured
LMArena WebDev: HTML13991597Grok 4.6
LMArena WebDev: from an imageNot measured1603Only Grok 4.6 measured
Neither model has a result on the other 12 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Claude Opus 4.1 and Grok 4.6
BenchmarkClaude Opus 4.1Grok 4.6Leader
AA Intelligence Index22.844.3Grok 4.6
Epoch Capabilities Index144.1156.6Grok 4.6
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index25 boards, none shared
Agentic work benchmarks for Claude Opus 4.1 and Grok 4.6
BenchmarkClaude Opus 4.1Grok 4.6Leader
AA Agentic IndexNot measured53.0Only Grok 4.6 measured
Design Arena: agents building web appsNot measured1247Only Grok 4.6 measured
Design Arena: agents building full-stack appsNot measured1264Only Grok 4.6 measured
Design Arena: agents building mobile appsNot measured1234Only Grok 4.6 measured
Design Arena: agents building Android appsNot measured1297Only Grok 4.6 measured
Design Arena: agents building Godot gamesNot measured1276Only Grok 4.6 measured
Design Arena: agents building gamesNot measured1208Only Grok 4.6 measured
Design Arena: HTML slidesNot measured1249Only Grok 4.6 measured
Design Arena: PowerPoint slidesNot measured1241Only Grok 4.6 measured
LiveBench researchNot measured84.5%Only Grok 4.6 measured
LiveBench browserNot measured64.0%Only Grok 4.6 measured
LiveBench long agenticNot measured40.7%Only Grok 4.6 measured
Finance Agent (Vals AI)Not measured53.7%Only Grok 4.6 measured
Tax Agent Bench (Vals AI)Not measured33.1%Only Grok 4.6 measured
Legal Research Bench (Vals AI)Not measured48.1%Only Grok 4.6 measured
Excel Modeling Benchmark (Vals AI)Not measured62.7%Only Grok 4.6 measured
BioMysteryBench (Vals AI)Not measured72.2%Only Grok 4.6 measured
Terminal-Bench-Science (Vals AI)Not measured11.4%Only Grok 4.6 measured
Vals Science IndexNot measured38.1%Only Grok 4.6 measured
Time Horizon Index (Vals AI)Not measured5.8%Only Grok 4.6 measured
APEX-AgentsNot measured65.3%Only Grok 4.6 measured
METR time horizons66.8%Not measuredOnly Claude Opus 4.1 measured
GDPval43.6%Not measuredOnly Claude Opus 4.1 measured
DeepResearch Bench48.3%Not measuredOnly Claude Opus 4.1 measured
Vending-Bench 2Not measured$9,047Only Grok 4.6 measured
Neither model has a result on the other 14 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index17
Reasoning benchmarks for Claude Opus 4.1 and Grok 4.6
BenchmarkClaude Opus 4.1Grok 4.6Leader
GPQA Diamond76.3%94.7%Grok 4.6
LiveBench reasoningNot measured91.2%Only Grok 4.6 measured
MysteryMechanism (Vals AI)Not measured30.6%Only Grok 4.6 measured
MMMU Pro (Vals AI)77.5%Not measuredOnly Claude Opus 4.1 measured
GPQA Diamond (Artificial Analysis run)Not measured94.9%Only Grok 4.6 measured
Humanity's Last Exam (Artificial Analysis run)Not measured44.1%Only Grok 4.6 measured
GPQA Diamond (Epoch AI run)77.3%94.0%Grok 4.6
ARC-AGINot measured87.5%Only Grok 4.6 measured
ARC-AGI-2Not measured67.1%Only Grok 4.6 measured
SimpleBench60.0%75.9%Grok 4.6
Chess puzzlesNot measured33.0%Only Grok 4.6 measured
Mystery game puzzles21.0%34.0%Grok 4.6
EBR-bench7.9%30.5%Grok 4.6
VPCT35.0%Not measuredOnly Claude Opus 4.1 measured
LMArena Text: hard prompts14421448Grok 4.6
LMArena Text: expert14381469Grok 4.6
LMArena Text: hard prompts in English14511445Claude Opus 4.1
LMArena Vision: diagramsNot measured1285Only Grok 4.6 measured
LMArena Vision: homeworkNot measured1283Only Grok 4.6 measured
Neither model has a result on the other 2 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index14
Math benchmarks for Claude Opus 4.1 and Grok 4.6
BenchmarkClaude Opus 4.1Grok 4.6Leader
AIME78.2%Not measuredOnly Claude Opus 4.1 measured
MATH 500 (Vals AI)95.4%Not measuredOnly Claude Opus 4.1 measured
MGSM (Vals AI)94.4%Not measuredOnly Claude Opus 4.1 measured
OTIS Mock AIME68.9%99.2%Grok 4.6
FrontierMath, tiers 1 to 312.6%66.0%Grok 4.6
FrontierMath, tier 42.4%31.7%Grok 4.6
ProofBenchNot measured51.0%Only Grok 4.6 measured
LMArena Text: math14311417Claude Opus 4.1
LMArena Text: mathematical work14341464Grok 4.6
Neither model has a result on the other 4 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index27
Knowledge benchmarks for Claude Opus 4.1 and Grok 4.6
BenchmarkClaude Opus 4.1Grok 4.6Leader
MMLU Pro87.9%89.4%Grok 4.6
LegalBench (Vals AI)83.5%86.3%Grok 4.6
CorpFin (Vals AI)Not measured66.2%Only Grok 4.6 measured
TaxEval (Vals AI)73.7%71.1%Claude Opus 4.1
MortgageTax (Vals AI)61.1%64.2%Grok 4.6
MedQA (Vals AI)93.6%Not measuredOnly Claude Opus 4.1 measured
MedCode (Vals AI)47.2%44.7%Claude Opus 4.1
SimpleQA VerifiedNot measured49.3%Only Grok 4.6 measured
LMArena Text: science14221437Grok 4.6
LMArena Text: medicine and healthcare14161420Grok 4.6
LMArena Text: legal and government14211429Grok 4.6
LMArena Text: business and finance14061416Grok 4.6
Neither model has a result on the other 5 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index08
Web design benchmarks for Claude Opus 4.1 and Grok 4.6
BenchmarkClaude Opus 4.1Grok 4.6Leader
Design Arena: websites11771289Grok 4.6
Design Arena: UI components11641294Grok 4.6
Design Arena: game dev11721296Grok 4.6
Design Arena: data viz11661283Grok 4.6
Design Arena: 3D11531277Grok 4.6
Design Arena: all code categories11711292Grok 4.6
Design Arena: SVG11521239Grok 4.6
Design Arena: ASCII art11671278Grok 4.6
LiveBench designNot measured79.8%Only Grok 4.6 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index615
General benchmarks for Claude Opus 4.1 and Grok 4.6
BenchmarkClaude Opus 4.1Grok 4.6Leader
LiveBench data analysisNot measured75.3%Only Grok 4.6 measured
Public Benefits Bench (Vals AI)Not measured66.8%Only Grok 4.6 measured
SAGE (Vals AI)31.4%28.9%Claude Opus 4.1
MedScribe (Vals AI)73.9%86.5%Grok 4.6
Long context reasoning (AA-LCR)Not measured81.0%Only Grok 4.6 measured
DTBench80.0%97.3%Grok 4.6
LMCA37.1%48.5%Grok 4.6
Creative writing (Lech Mazur)84.7%Not measuredOnly Claude Opus 4.1 measured
Furniture assemblyNot measured40.0%Only Grok 4.6 measured
LMArena Text14191429Grok 4.6
LMArena Text: instruction following14351431Claude Opus 4.1
LMArena Text: creative writing14121426Grok 4.6
LMArena VisionNot measured1263Only Grok 4.6 measured
LMArena Text: English14331433Claude Opus 4.1
LMArena Text: non-English14051420Grok 4.6
LMArena Text: Chinese14271476Grok 4.6
LMArena Text: German14131426Grok 4.6
LMArena Text: Japanese13771378Grok 4.6
LMArena Text: Korean13811391Grok 4.6
LMArena Text: French14331455Grok 4.6
LMArena Text: Spanish14481414Claude Opus 4.1
LMArena Text: Russian14221421Claude Opus 4.1
LMArena Text: Polish14131430Grok 4.6
LMArena Text: multi-turn14441425Claude Opus 4.1
LMArena Text: longer queries14551456Grok 4.6
LMArena Text: writing and language14181429Grok 4.6
LMArena Text: entertainment and media13981421Grok 4.6
LMArena Vision: EnglishNot measured1270Only Grok 4.6 measured
LMArena Vision: ChineseNot measured1289Only Grok 4.6 measured
LMArena Vision: reading textNot measured1272Only Grok 4.6 measured
LMArena Vision: humorNot measured1270Only Grok 4.6 measured
LMArena Vision: creative writingNot measured1262Only Grok 4.6 measured
LMArena DocumentNot measured1452Only Grok 4.6 measured
Neither model has a result on the other 13 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Claude Opus 4.1 and Grok 4.6
BenchmarkClaude Opus 4.1Grok 4.6Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

Claude Opus 4.1$0.052Fits in one request
Grok 4.6$0.0050Fits in one request

Grok 4.6 costs less

Repository review

50K input + 3K output tokens

Claude Opus 4.1$0.975Fits in one request
Grok 4.6$0.118Fits in one request

Grok 4.6 costs less

Agent loop

200K input + 10K output tokens

Claude Opus 4.1$3.75Exceeds the context window
Grok 4.6$0.460Fits in one request

Grok 4.6 costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of Claude Opus 4.1 and Grok 4.6
SpecificationAnthropic Claude Opus 4.1SpaceXAI Grok 4.6
MakerAnthropicxAI
WeightsNo public weights listedNo public weights listed
ReleasedAugust 5, 2025August 12, 2026
Context window200K500K
Input $/Mtok$15.00$2.00
Output $/Mtok$75.00$6.00
Coding index27.276.4
Independent measurements behind it12
Cost per solved taskNot computable$0.82
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Opus 4.1 better than Grok 4.6 for coding?

Pick Grok 4.6 for coding: it scores 76.4 on the Vibe Coding Index against 27.2 for Claude Opus 4.1. Pick Claude Opus 4.1 when what matters is LMArena Text: coding or LMArena Text: hard prompts in English, where it leads.

Which is cheaper, Claude Opus 4.1 or Grok 4.6?

Claude Opus 4.1 costs $15.00 per million input tokens and $75.00 per million output tokens; Grok 4.6 costs $2.00 and $6.00. Cost per solved task is known for Grok 4.6 only.

Which has the bigger context window, Claude Opus 4.1 or Grok 4.6?

Grok 4.6, with 500K tokens against 200K.

How many benchmarks is the Claude Opus 4.1 vs Grok 4.6 comparison based on?

59 benchmarks have a result for both models as of October 21, 2026. Claude Opus 4.1's coding index rests on 1 independent benchmark and Grok 4.6's on 2. Where only one model has a result, the page says so instead of naming a winner.

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