Model comparison
Claude Sonnet 4.6 vs Grok 3
Claude Sonnet 4.6 is the stronger model overall, scoring 50.3 to 39.9 on the Noometry Index.
Last verified . 27 shared benchmarks.
Summary
- They share 27 benchmarks with published results for both. Claude Sonnet 4.6 scores higher in 9 categories and Grok 3 in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Sonnet 4.6 leads 46.1 to 13.7.
- The biggest single-benchmark swing is ARC-AGI-1: 86.5% for Claude Sonnet 4.6 and 5.5% for Grok 3.
Side by side
| Claude Sonnet 4.6 | Grok 3 | |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 50.3 | 39.9 |
| Released | 2026-02-17 | 2025-04-09 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $3 | — |
| Output $ / M tokens | $15 | — |
| Results tracked | 57 | 40 |
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Category by category
Coding Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 46.3 (#67), Grok 3: 41.9 (#115)
| Benchmark | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| WeirdML | 66.1% | 37.2% |
| LMArena Coding | 1504 | 1432 |
| SWE-bench Verified | 75.2% | — |
| DeepSWE | 29.9% | — |
| FrontierCode | 24.3% | — |
| Aider Polyglot | — | 53.3% |
| LMArena WebDev | 1522 | — |
| SciCode | 46.8% | — |
| ALE-Bench | 1,327 | — |
Agentic & Tool Use Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 39.1 (#28), Grok 3: 30.5 (#76)
| Benchmark | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| Terminal-Bench | 53.4% | — |
| APEX-Agents | 43% | — |
| OSWorld 2.0 | 9.3% | — |
| DeepResearch Bench | 54.9% | — |
| OSWorld | 72.1% | — |
| BALROG | — | 29.5% |
| ExploitBench | 23.6% | — |
| GBAEval | 48.8% | — |
| GDP.pdf | 18% | — |
| LMArena Search | 1221 | — |
| Vending-Bench 2 | 7,204 | — |
Reasoning Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 46.1 (#45), Grok 3: 13.7 (#333)
| Benchmark | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| ARC-AGI-2 | 60.4% | 0% |
| ARC-AGI-1 | 86.5% | 5.5% |
| LMArena Hard Prompts | 1484 | 1434 |
| Epoch Capabilities Index | 152.24 | 138.33 |
| SimpleBench | — | 36.1% |
| Kagi LLM Benchmark | — | 61.3% |
| NYT Connections (extended) | 80.9% | — |
| CritPt | 3.1% | — |
| Chess Puzzles | 13% | — |
| Thematic Generalization | 76.3% | — |
| Mystery Game Puzzles | 16% | — |
| DTBench | 89.9% | — |
| LMCA | 46.5% | — |
| ForecastBench | 62 | — |
Math Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 52.9 (#49), Grok 3: 38.0 (#145)
| Benchmark | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 85.8% | 55.6% |
| LMArena Math | 1462 | 1391 |
| FrontierMath (Feb 2025 set) | 32.4% | 3.8% |
| FrontierMath Tier 4 (v1) | 8.3% | 0% |
| ProofBench | 45% | — |
| Omni-MATH | — | 46.4% |
| MATH Level 5 | — | 88.7% |
Knowledge Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 51.7 (#65), Grok 3: 46.2 (#82)
| Benchmark | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| GPQA Diamond | 87.4% | 75.8% |
| Vectara Hallucination Rate | 10.6% | 5.8% |
| LMArena Expert | 1500 | 1421 |
| SimpleQA Verified | 35.5% | — |
| MMLU-Pro | — | 78.8% |
| Confabulations | — | 14.2% |
| GPQA (HELM) | — | 65% |
Multimodal Not comparable
Claude Sonnet 4.6: 38.0 (#68), Grok 3: —
| Benchmark | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| LMArena Vision | 1283 | — |
| Blueprint-Bench 2 | 6.7% | — |
| LMArena Document | 1482 | — |
Multilingual Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 54.4 (#41), Grok 3: 52.3 (#87)
| Benchmark | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| LMArena Non-English | 1440 | 1410 |
| LMArena Chinese | 1491 | 1448 |
| LMArena French | 1465 | 1460 |
| LMArena German | 1428 | 1431 |
| LMArena Japanese | 1420 | 1387 |
| LMArena Korean | 1411 | 1373 |
| LMArena Russian | 1440 | 1416 |
| LMArena Spanish | 1464 | 1417 |
Instruction Following Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 77.4 (#25), Grok 3: 75.0 (#73)
| Benchmark | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| LMArena Instruction Following | 1475 | 1409 |
| IFEval | — | 88.4% |
Long Context Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 45.3 (#44), Grok 3: 38.7 (#192)
| Benchmark | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| LMArena Longer Query | 1479 | 1439 |
| Fiction.LiveBench | — | 58.3% |
Writing & Preference Claude Sonnet 4.6 leads
Claude Sonnet 4.6: 70.2 (#22), Grok 3: 55.8 (#141)
| Benchmark | Claude Sonnet 4.6 | Grok 3 |
|---|---|---|
| LMArena Text | 1458 | 1426 |
| LMArena Creative Writing | 1435 | 1414 |
| EQ-Bench Creative Writing | 1810 | 1186 |
| LMArena Multi-Turn | 1464 | 1425 |
| Short-Story Creative Writing | — | 76.4% |
| WildBench | — | 84.9% |
| EQ-Bench 4 | 1207 | — |
Frequently asked questions
Is Claude Sonnet 4.6 better than Grok 3?
Claude Sonnet 4.6 is the stronger model overall, scoring 50.3 to 39.9 on the Noometry Index.
Is Claude Sonnet 4.6 or Grok 3 better for coding?
Claude Sonnet 4.6 scores higher on coding benchmarks: 46.3 versus 41.9 in the Noometry coding category.
How many benchmarks do Claude Sonnet 4.6 and Grok 3 share?
27 benchmarks have published results for both models. Claude Sonnet 4.6 has 57 scored results on Noometry and Grok 3 has 40.