Model comparison
Claude 3.7 Sonnet vs Grok 4 Fast
Claude 3.7 Sonnet and Grok 4 Fast score almost the same on the Noometry Index (39.5 vs 39.4), so choose on price, context window or the category you care about most.
Last verified . 23 shared benchmarks.
Summary
- They share 23 benchmarks with published results for both. Claude 3.7 Sonnet scores higher in 3 categories and Grok 4 Fast in 6 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 Fast leads 63.2 to 50.3.
- The biggest single-benchmark swing is ARC-AGI-1: 28.6% for Claude 3.7 Sonnet and 48.5% for Grok 4 Fast.
Side by side
| Claude 3.7 Sonnet | Grok 4 Fast | |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 39.5 | 39.4 |
| Released | 2025-02-24 | 2025-09-19 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 58 | 30 |
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Category by category
Coding Claude 3.7 Sonnet leads
Claude 3.7 Sonnet: 40.6 (#136), Grok 4 Fast: 32.5 (#271)
| Benchmark | Claude 3.7 Sonnet | Grok 4 Fast |
|---|---|---|
| LMArena Coding | 1361 | 1429 |
| SWE-bench Verified | 61% | — |
| SWE-bench Verified (bash only) | 52.8% | — |
| Aider Polyglot | 64.9% | — |
| LMArena WebDev | — | 1159 |
| GSO | 3.8% | — |
| WeirdML | — | 42.9% |
| LiveBench Coding | 74.5% | — |
| CadEval | 54% | — |
Agentic & Tool Use Claude 3.7 Sonnet leads
Claude 3.7 Sonnet: 34.1 (#50), Grok 4 Fast: 29.5 (#86)
| Benchmark | Claude 3.7 Sonnet | Grok 4 Fast |
|---|---|---|
| Cybench | 20% | 30% |
| TheAgentCompany | 30.9% | — |
| τ²-bench Banking | — | 15.7% |
| DeepResearch Bench | 43.6% | — |
| OSWorld | 35.8% | — |
| LMArena Search | — | 1171 |
| METR Time Horizons | 60% | — |
Reasoning Grok 4 Fast leads
Claude 3.7 Sonnet: 18.6 (#277), Grok 4 Fast: 22.2 (#201)
| Benchmark | Claude 3.7 Sonnet | Grok 4 Fast |
|---|---|---|
| ARC-AGI-2 | 0.9% | 5.3% |
| ARC-AGI-1 | 28.6% | 48.5% |
| LMArena Hard Prompts | 1333 | 1412 |
| Epoch Capabilities Index | 141.16 | 144.2 |
| ForecastBench | 61.8 | 60.5 |
| SimpleBench | 46.4% | — |
| Kagi LLM Benchmark | — | 66.1% |
| EnigmaEval | 4.2% | — |
| LiveBench Reasoning | 87.8% | — |
| DTBench | — | 82.7% |
| LiveBench Data Analysis | 74% | — |
| LiveBench | 76.1% | — |
Math Grok 4 Fast leads
Claude 3.7 Sonnet: 37.5 (#153), Grok 4 Fast: 38.9 (#123)
| Benchmark | Claude 3.7 Sonnet | Grok 4 Fast |
|---|---|---|
| LMArena Math | 1337 | 1419 |
| OTIS Mock AIME 2024-2025 | 57.8% | — |
| Omni-MATH | 33% | — |
| LiveBench Math | 79% | — |
| MATH Level 5 | 91.2% | — |
| FrontierMath (Feb 2025 set) | 4.1% | — |
Knowledge Claude 3.7 Sonnet leads
Claude 3.7 Sonnet: 39.8 (#130), Grok 4 Fast: 32.0 (#214)
| Benchmark | Claude 3.7 Sonnet | Grok 4 Fast |
|---|---|---|
| LMArena Expert | 1321 | 1411 |
| GPQA Diamond | 79.7% | — |
| Humanity's Last Exam | 8% | — |
| MMLU-Pro | 78.4% | — |
| Confabulations | 14.7% | — |
| Vectara Hallucination Rate | — | 19.7% |
| GPQA (HELM) | 60.8% | — |
Multimodal Not comparable
Claude 3.7 Sonnet: 33.7 (#95), Grok 4 Fast: —
| Benchmark | Claude 3.7 Sonnet | Grok 4 Fast |
|---|---|---|
| LMArena Vision | 1169 | — |
| GeoBench | 68% | — |
| VPCT | 39% | — |
| SpatialViz-Bench | 33.9% | — |
Multilingual Grok 4 Fast leads
Claude 3.7 Sonnet: 44.1 (#179), Grok 4 Fast: 51.3 (#111)
| Benchmark | Claude 3.7 Sonnet | Grok 4 Fast |
|---|---|---|
| LMArena Non-English | 1296 | 1396 |
| LMArena Chinese | 1299 | 1457 |
| LMArena French | 1303 | 1431 |
| LMArena German | 1301 | 1383 |
| LMArena Japanese | 1267 | 1352 |
| LMArena Korean | 1249 | 1357 |
| LMArena Russian | 1311 | 1389 |
| LMArena Spanish | 1298 | 1415 |
Instruction Following Too close to call
Claude 3.7 Sonnet: 72.9 (#125), Grok 4 Fast: 73.2 (#121)
| Benchmark | Claude 3.7 Sonnet | Grok 4 Fast |
|---|---|---|
| LMArena Instruction Following | 1352 | 1387 |
| LiveBench Instruction Following | 81.3% | — |
| IFEval | 83.4% | — |
Long Context Grok 4 Fast leads
Claude 3.7 Sonnet: 50.3 (#10), Grok 4 Fast: 63.2 (#3)
| Benchmark | Claude 3.7 Sonnet | Grok 4 Fast |
|---|---|---|
| Fiction.LiveBench | 83.3% | 94.4% |
| LMArena Longer Query | 1373 | 1415 |
Writing & Preference Grok 4 Fast leads
Claude 3.7 Sonnet: 54.4 (#150), Grok 4 Fast: 60.0 (#102)
| Benchmark | Claude 3.7 Sonnet | Grok 4 Fast |
|---|---|---|
| LMArena Text | 1314 | 1407 |
| LMArena Creative Writing | 1332 | 1387 |
| LMArena Multi-Turn | 1339 | 1414 |
| Short-Story Creative Writing | 81.1% | — |
| EQ-Bench Creative Writing | 1412 | — |
| WildBench | 81.4% | — |
| LiveBench Language | 59.9% | — |
Frequently asked questions
Is Claude 3.7 Sonnet better than Grok 4 Fast?
Claude 3.7 Sonnet and Grok 4 Fast score almost the same on the Noometry Index (39.5 vs 39.4), so choose on price, context window or the category you care about most.
Is Claude 3.7 Sonnet or Grok 4 Fast better for coding?
Claude 3.7 Sonnet scores higher on coding benchmarks: 40.6 versus 32.5 in the Noometry coding category.
How many benchmarks do Claude 3.7 Sonnet and Grok 4 Fast share?
23 benchmarks have published results for both models. Claude 3.7 Sonnet has 58 scored results on Noometry and Grok 4 Fast has 30.