Model comparison
Claude Sonnet 5 vs Grok 4
Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 48.1 on the Noometry Index.
Last verified . 26 shared benchmarks.
Summary
- They share 26 benchmarks with published results for both. Claude Sonnet 5 scores higher in 8 categories and Grok 4 in 2 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 leads 63.1 to 44.8.
- The biggest single-benchmark swing is WeirdML: 68.8% for Claude Sonnet 5 and 45.7% for Grok 4.
Side by side
| Claude Sonnet 5 | Grok 4 | |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 54.6 | 48.1 |
| Released | 2026-06-29 | 2025-07-09 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 51 | 48 |
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Category by category
Coding Claude Sonnet 5 leads
Claude Sonnet 5: 55.5 (#26), Grok 4: 50.3 (#46)
| Benchmark | Claude Sonnet 5 | Grok 4 |
|---|---|---|
| WeirdML | 68.8% | 45.7% |
| LMArena Coding | 1483 | 1408 |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.7% | — |
| Aider Polyglot | — | 79.6% |
| CursorBench | 34.1% | — |
| LMArena WebDev | 1541 | — |
| SciCode | 54.3% | — |
| GSO | 37.3% | — |
| ALE-Bench | 1,463 | — |
Agentic & Tool Use Claude Sonnet 5 leads
Claude Sonnet 5: 42.8 (#18), Grok 4: 32.3 (#68)
| Benchmark | Claude Sonnet 5 | Grok 4 |
|---|---|---|
| LMArena Search | 1194 | 1142 |
| Terminal-Bench | — | 27.2% |
| APEX-Agents | 54.5% | — |
| Berkeley Function Calling Leaderboard | — | 63% |
| GDPval | — | 21.1% |
| Cybench | — | 43% |
| DeepResearch Bench | — | 47.3% |
| BALROG | — | 43.6% |
| GBAEval | 65.3% | — |
| METR Time Horizons | — | 66.6% |
| Vending-Bench 2 | 6,378 | — |
Reasoning Claude Sonnet 5 leads
Claude Sonnet 5: 49.1 (#39), Grok 4: 36.7 (#65)
| Benchmark | Claude Sonnet 5 | Grok 4 |
|---|---|---|
| SimpleBench | 60.6% | 60.5% |
| Chess Puzzles | 35% | 28% |
| LMArena Hard Prompts | 1461 | 1409 |
| Epoch Capabilities Index | 156.21 | 146.44 |
| ForecastBench | 61.1 | 60.9 |
| ARC-AGI-2 | — | 16% |
| Kagi LLM Benchmark | — | 73.6% |
| NYT Connections (extended) | 75.1% | — |
| ARC-AGI-1 | — | 66.7% |
| CritPt | 16.9% | — |
| Mystery Game Puzzles | 35% | — |
| DTBench | 92.5% | — |
| LMCA | 50% | — |
| Surface Evolver Bench | 60% | — |
| Bench to the Future 3 | 0.14 | — |
Math Claude Sonnet 5 leads
Claude Sonnet 5: 66.2 (#27), Grok 4: 48.4 (#64)
| Benchmark | Claude Sonnet 5 | Grok 4 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 94.7% | 84% |
| LMArena Math | 1467 | 1422 |
| FrontierMath (Tiers 1-3) | 65.6% | — |
| FrontierMath Tier 4 | 29.3% | — |
| ProofBench | 77% | — |
| Omni-MATH | — | 60.3% |
| FrontierMath (Feb 2025 set) | — | 19.7% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge Claude Sonnet 5 leads
Claude Sonnet 5: 55.6 (#47), Grok 4: 53.8 (#55)
| Benchmark | Claude Sonnet 5 | Grok 4 |
|---|---|---|
| GPQA Diamond | 90.5% | 87% |
| LMArena Expert | 1490 | 1415 |
| SimpleQA Verified | 33.7% | — |
| MMLU-Pro | — | 85.1% |
| Confabulations | — | 12.4% |
| GPQA (HELM) | — | 72.7% |
Multimodal Claude Sonnet 5 leads
Claude Sonnet 5: 42.4 (#31), Grok 4: 33.7 (#94)
| Benchmark | Claude Sonnet 5 | Grok 4 |
|---|---|---|
| LMArena Vision | 1274 | 1210 |
| GeoBench | — | 45% |
| Blueprint-Bench 2 | 24.9% | — |
| LMArena Document | 1466 | — |
Multilingual Claude Sonnet 5 leads
Claude Sonnet 5: 53.8 (#55), Grok 4: 51.8 (#103)
| Benchmark | Claude Sonnet 5 | Grok 4 |
|---|---|---|
| LMArena Non-English | 1431 | 1403 |
| LMArena Chinese | 1477 | 1427 |
| LMArena French | 1460 | 1418 |
| LMArena German | 1440 | 1429 |
| LMArena Japanese | 1422 | 1394 |
| LMArena Korean | 1411 | 1377 |
| LMArena Russian | 1451 | 1410 |
| LMArena Spanish | 1437 | 1420 |
Instruction Following Grok 4 leads
Claude Sonnet 5: 76.3 (#41), Grok 4: 79.2 (#5)
| Benchmark | Claude Sonnet 5 | Grok 4 |
|---|---|---|
| LMArena Instruction Following | 1452 | 1387 |
| IFEval | — | 94.9% |
Long Context Grok 4 leads
Claude Sonnet 5: 44.8 (#55), Grok 4: 63.1 (#4)
| Benchmark | Claude Sonnet 5 | Grok 4 |
|---|---|---|
| LMArena Longer Query | 1463 | 1409 |
| Fiction.LiveBench | — | 94.4% |
Writing & Preference Claude Sonnet 5 leads
Claude Sonnet 5: 69.2 (#25), Grok 4: 58.5 (#116)
| Benchmark | Claude Sonnet 5 | Grok 4 |
|---|---|---|
| LMArena Text | 1442 | 1411 |
| LMArena Creative Writing | 1416 | 1397 |
| LMArena Multi-Turn | 1454 | 1416 |
| Short-Story Creative Writing | — | 76.9% |
| EQ-Bench Creative Writing | 1794 | — |
| WildBench | — | 79.7% |
| EQ-Bench 4 | 1236 | — |
Frequently asked questions
Is Claude Sonnet 5 better than Grok 4?
Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 48.1 on the Noometry Index.
Is Claude Sonnet 5 or Grok 4 better for coding?
Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 50.3 in the Noometry coding category.
How many benchmarks do Claude Sonnet 5 and Grok 4 share?
26 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Grok 4 has 48.