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Grok vs Claude: AI benchmark scores compared (Oct 2026)

On the 18 public leaderboards where both have a reported score, Grok’s best-ranked model scores higher on 2, Claude’s on 16. Counting only the 10 leaderboards their sources still update: Grok 0, Claude 10.

In plain words

  • Multi-domain agent tasks: Claude higher on 1 of 1 (Vals Index).
  • Legal: Claude higher on all 4 (Legal Benchmarks: Contract Workflows, Legal Benchmarks: Data Extraction, LegalBench and Legal Research Bench).
  • Health & medical: Claude higher on all 3 (HealthBench (independent run), MedCode and MedQA).
  • Finance: Claude higher on all 2 (Finance Agent and CorpFin v2).
  • Coding: Claude higher on all 2 (SWE-bench Verified and LiveCodeBench).
  • Agents & tool use: Claude higher on all 2 (Terminal-Bench 4.0 and Terminal-Bench 2.1).
  • Reasoning & knowledge: Grok higher on 2 of 3 (GPQA Diamond and AIME); Claude higher on 1 of 3 (MMLU Pro).
  • Chat preference: Claude higher on 1 of 1 (LMArena Text Arena).
  • Grok’s best-ranked entry is most often Grok 4.6 (9 of 18); Claude’s is most often Claude Opus 5.5 (5 of 18).

Grok here means xAI’s Grok models; Claude means Anthropic’s Claude models. On each leaderboard we compare each side’s best-ranked model, so the model can differ by benchmark. A side only counts where it appears on the leaderboard (we keep each source’s top rows).

Results from published AI leaderboards. Compare models within each benchmark; scores from different tests aren’t directly comparable. How we collect these results

Multi-domain agent tasks

BenchmarkGrokClaudeHigher score
Vals IndexAccuracy · dated 21 Oct 202658.56%Grok 4.7 · #1170.85%Claude Sonnet 5.5 · #1Claude higherby 12.29 pts

Health & medical

BenchmarkGrokClaudeHigher score
HealthBench (independent run)HealthBench · checked 22 Oct 202656.0%Grok 4.7 (xhigh) · #862.1%Claude Sonnet 5.5 (max with fallback) · #1Claude higherby 6.1 pts
MedCodeAccuracy · dated 13 Oct 202649.55%Grok 4.7 · #2263.57%Claude Opus 5 · #1Claude higherby 14.02 pts
MedQAAccuracy · dated 16 Apr 2026 · no longer updated94.55%Grok 4.20 (Reasoning) · #1695.88%Claude Opus 4.5 (Thinking) · #10Claude higherby 1.33 pts

Finance

BenchmarkGrokClaudeHigher score
Finance AgentAccuracy · dated 19 Oct 202660.59%Grok 4.7 · #1867.85%Claude Opus 5.5 · #1Claude higherby 7.26 pts
CorpFin v2Accuracy · dated 12 Aug 2026 · no longer updated68.53%Grok 4.3 · #873.19%Claude Opus 5 · #1Claude higherby 4.66 pts

Coding

BenchmarkGrokClaudeHigher score
SWE-bench VerifiedScore · dated 1 Sep 2026 · no longer updated95.6%Grok 4.6 · #497.0%Claude Opus 5 · #1Claude higherby 1.4 pts
LiveCodeBenchAccuracy · dated 1 Sep 2026 · no longer updated88.22%Grok 4.6 · #790.52%Claude Fable 5.1 · #1Claude higherby 2.30 pts

Agents & tool use

BenchmarkGrokClaudeHigher score
Terminal-Bench 4.0Score · dated 19 Oct 202628.79%Grok 4.7 · #2065.15%Claude Opus 5.5 · #1Claude higherby 36.36 pts
Terminal-Bench 2.1Score · dated 28 Sep 2026 · no longer updated78.28%Grok 4.6 · #1387.64%Claude Opus 5.5 · #1Claude higherby 9.36 pts

Reasoning & knowledge

BenchmarkGrokClaudeHigher score
GPQA DiamondAccuracy · dated 1 Sep 2026 · no longer updated94.70%Grok 4.6 · #393.43%Claude Opus 5 · #8Grok higherby 1.27 pts
AIMEAccuracy · dated 16 Apr 2026 · no longer updated96.46%Grok 4.20 (Reasoning) · #696.25%Claude Opus 4.7 · #7Grok higherby 0.21 pts
MMLU ProAccuracy · dated 1 Sep 2026 · no longer updated89.40%Grok 4.6 · #1192.38%Claude Fable 5.1 · #1Claude higherby 2.98 pts

Chat preference

BenchmarkGrokClaudeHigher score
LMArena Text ArenaArena score · dated 20 Oct 20261475 ±5Grok 4.20 Beta 1 · #391509 ±7Claude Opus 5.5 (High) · #3Claude higherby 34

Every score links to the leaderboard that published it. Sources: Vals AI ↗ · Legal Benchmarks ↗ · Artificial Analysis ↗ · LMArena ↗. ChatJudge does not run these tests.

Test Grok and Claude on your own work

Run the same prompt in both and compare the answers. Prompts for Grok → · Prompts for Claude →

ReviewsClaudeCompare two documents clause by clauseChecking a filled-in contract or proposal against its template.View prompt ProposalsChatGPTClarify commercial termsPricing, commission or partnership fees are being misread.View prompt
ResearchAny modelTurn messy text into a tableYou extract structured data from messy text. I will give you text and the fields I want. Return…View prompt AI Native SolutionsAI Native Solutions @ainativesolReport or remove
MarketingClaudeCustomer interviews to evidence-backed landing-page outlineFirst, extract exact quotes about desired outcomes, buying objections, and evidence customers ask…View prompt Nastation | AI for Client Work @NastaitonReport or remove
ResearchGeminiInvestor/stock due-diligenceAct as a forensic equity analyst. Conduct a deep research analysis for [COMPANY / TICKER] based on…View prompt MasterYoda @MasterYoda1991Report or remove
PricingClaudeUnit economics checkTesting whether your pricing survives your real usage costs.View prompt

Questions people ask

Is Grok better than Claude?

On the 18 public leaderboards where both have a reported score, Grok’s best-ranked model scores higher on 2, Claude’s on 16. Counting only the 10 leaderboards their sources still update: Grok 0, Claude 10. Which is better depends on the task: the leaders differ by benchmark, and scores from different tests are not directly comparable.

Is Grok or Claude better for multi-domain agent tasks?

Vals Index: Claude 70.85% vs Grok 58.56%. Each figure is the best-ranked model from each side on that leaderboard, as published by its source.

Is Grok or Claude better for legal work?

Legal Benchmarks: Contract Workflows: Claude 48.4% vs Grok 25.8%; Legal Benchmarks: Data Extraction: Claude 76.7% vs Grok 53.3%; LegalBench: Claude 88.56% vs Grok 86.31%; Legal Research Bench: Claude 55.29% vs Grok 48.08%. Each figure is the best-ranked model from each side on that leaderboard, as published by its source.

Is Grok or Claude better for health & medical questions?

HealthBench (independent run): Claude 62.1% vs Grok 56.0%; MedCode: Claude 63.57% vs Grok 49.55%; MedQA: Claude 95.88% vs Grok 94.55%. Each figure is the best-ranked model from each side on that leaderboard, as published by its source.

Is Grok or Claude better for finance?

Finance Agent: Claude 67.85% vs Grok 60.59%; CorpFin v2: Claude 73.19% vs Grok 68.53%. Each figure is the best-ranked model from each side on that leaderboard, as published by its source.

Is Grok or Claude better for coding?

SWE-bench Verified: Claude 97.0% vs Grok 95.6%; LiveCodeBench: Claude 90.52% vs Grok 88.22%. Each figure is the best-ranked model from each side on that leaderboard, as published by its source.

How recent is this comparison?

It is rebuilt from our benchmark data, last checked on 22 Oct 2026. Each leaderboard’s own date is shown in the table. MedQA, CorpFin v2, SWE-bench Verified, LiveCodeBench, Terminal-Bench 2.1, GPQA Diamond, AIME and MMLU Pro are no longer updated by the source, so newer models may be missing there.

Which models are being compared?

On each leaderboard we take the best-ranked Grok model and the best-ranked Claude model, so the model can change from one benchmark to the next. Grok’s top entry is most often Grok 4.6 (9 of 18); Claude’s is most often Claude Opus 5.5 (5 of 18). Grok here means xAI’s Grok models; Claude means Anthropic’s Claude models.