Model comparison
Claude Sonnet 5 vs Grok-2 (Dec 2024)
Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 33.7 on the Noometry Index.
Last verified . 23 shared benchmarks.
Summary
- They share 23 benchmarks with published results for both. Claude Sonnet 5 scores higher in 8 categories and Grok-2 (Dec 2024) in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5 leads 66.2 to 20.8.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 94.7% for Claude Sonnet 5 and 11.5% for Grok-2 (Dec 2024).
Side by side
| Claude Sonnet 5 | Grok-2 (Dec 2024) | |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 54.6 | 33.7 |
| Released | 2026-06-29 | 2024-08-13 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 128K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 51 | 34 |
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Category by category
Coding Claude Sonnet 5 leads
Claude Sonnet 5: 55.5 (#26), Grok-2 (Dec 2024): 33.3 (#258)
| Benchmark | Claude Sonnet 5 | Grok-2 (Dec 2024) |
|---|---|---|
| WeirdML | 68.8% | 22.2% |
| LMArena Coding | 1483 | 1287 |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.7% | — |
| CursorBench | 34.1% | — |
| LMArena WebDev | 1541 | — |
| SciCode | 54.3% | — |
| GSO | 37.3% | — |
| LiveBench Coding | — | 46.4% |
| ALE-Bench | 1,463 | — |
Agentic & Tool Use Not comparable
Claude Sonnet 5: 42.8 (#18), Grok-2 (Dec 2024): —
| Benchmark | Claude Sonnet 5 | Grok-2 (Dec 2024) |
|---|---|---|
| APEX-Agents | 54.5% | — |
| GBAEval | 65.3% | — |
| LMArena Search | 1194 | — |
| Vending-Bench 2 | 6,378 | — |
Reasoning Claude Sonnet 5 leads
Claude Sonnet 5: 49.1 (#39), Grok-2 (Dec 2024): 16.9 (#299)
| Benchmark | Claude Sonnet 5 | Grok-2 (Dec 2024) |
|---|---|---|
| SimpleBench | 60.6% | 22.7% |
| LMArena Hard Prompts | 1461 | 1272 |
| DTBench | 92.5% | 65.2% |
| Epoch Capabilities Index | 156.21 | 130.48 |
| NYT Connections (extended) | 75.1% | — |
| CritPt | 16.9% | — |
| Chess Puzzles | 35% | — |
| LiveBench Reasoning | — | 54.8% |
| Mystery Game Puzzles | 35% | — |
| LiveBench Data Analysis | — | 54.5% |
| LMCA | 50% | — |
| Surface Evolver Bench | 60% | — |
| Bench to the Future 3 | 0.14 | — |
| ForecastBench | 61.1 | — |
| LiveBench | — | 54.3% |
Math Claude Sonnet 5 leads
Claude Sonnet 5: 66.2 (#27), Grok-2 (Dec 2024): 20.8 (#284)
| Benchmark | Claude Sonnet 5 | Grok-2 (Dec 2024) |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 94.7% | 11.5% |
| LMArena Math | 1467 | 1283 |
| FrontierMath (Tiers 1-3) | 65.6% | — |
| FrontierMath Tier 4 | 29.3% | — |
| ProofBench | 77% | — |
| LiveBench Math | — | 54.9% |
| MATH Level 5 | — | 63.5% |
| FrontierMath (Feb 2025 set) | — | 0.7% |
Knowledge Claude Sonnet 5 leads
Claude Sonnet 5: 55.6 (#47), Grok-2 (Dec 2024): 29.8 (#233)
| Benchmark | Claude Sonnet 5 | Grok-2 (Dec 2024) |
|---|---|---|
| GPQA Diamond | 90.5% | 53.8% |
| LMArena Expert | 1490 | 1254 |
| SimpleQA Verified | 33.7% | — |
| Confabulations | — | 20.1% |
Multimodal Not comparable
Claude Sonnet 5: 42.4 (#31), Grok-2 (Dec 2024): —
| Benchmark | Claude Sonnet 5 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Vision | 1274 | — |
| Blueprint-Bench 2 | 24.9% | — |
| LMArena Document | 1466 | — |
Multilingual Claude Sonnet 5 leads
Claude Sonnet 5: 53.8 (#55), Grok-2 (Dec 2024): 43.1 (#188)
| Benchmark | Claude Sonnet 5 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Non-English | 1431 | 1282 |
| LMArena Chinese | 1477 | 1289 |
| LMArena French | 1460 | 1318 |
| LMArena German | 1440 | 1287 |
| LMArena Japanese | 1422 | 1244 |
| LMArena Korean | 1411 | 1237 |
| LMArena Russian | 1451 | 1286 |
| LMArena Spanish | 1437 | 1281 |
Instruction Following Claude Sonnet 5 leads
Claude Sonnet 5: 76.3 (#41), Grok-2 (Dec 2024): 66.9 (#202)
| Benchmark | Claude Sonnet 5 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Instruction Following | 1452 | 1270 |
| LiveBench Instruction Following | — | 69.6% |
Long Context Claude Sonnet 5 leads
Claude Sonnet 5: 44.8 (#55), Grok-2 (Dec 2024): 38.8 (#190)
| Benchmark | Claude Sonnet 5 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Longer Query | 1463 | 1276 |
Writing & Preference Claude Sonnet 5 leads
Claude Sonnet 5: 69.2 (#25), Grok-2 (Dec 2024): 48.6 (#198)
| Benchmark | Claude Sonnet 5 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Text | 1442 | 1305 |
| LMArena Creative Writing | 1416 | 1284 |
| LMArena Multi-Turn | 1454 | 1290 |
| Short-Story Creative Writing | — | 63.6% |
| EQ-Bench Creative Writing | 1794 | — |
| EQ-Bench 4 | 1236 | — |
| LiveBench Language | — | 45.6% |
Frequently asked questions
Is Claude Sonnet 5 better than Grok-2 (Dec 2024)?
Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 33.7 on the Noometry Index.
Is Claude Sonnet 5 or Grok-2 (Dec 2024) better for coding?
Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 33.3 in the Noometry coding category.
How many benchmarks do Claude Sonnet 5 and Grok-2 (Dec 2024) share?
23 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Grok-2 (Dec 2024) has 34.