Model comparison
Claude 3.7 Sonnet vs Mercury 2
Claude 3.7 Sonnet and Mercury 2 score almost the same on the Noometry Index (39.5 vs 39.1), so choose on price, context window or the category you care about most.
Last verified . 11 shared benchmarks.
Summary
- They share 11 benchmarks with published results for both. Claude 3.7 Sonnet scores higher in 5 categories and Mercury 2 in 2 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in long context, where Claude 3.7 Sonnet leads 50.3 to 40.5.
Side by side
| Claude 3.7 Sonnet | Mercury 2 | |
|---|---|---|
| Provider | Anthropic | Inception |
| Noometry Index | 39.5 | 39.1 |
| Released | 2025-02-24 | 2026-02-20 |
| Weights | Proprietary | Proprietary |
| Context window | — | 128K |
| Max output | — | 50K |
| Input $ / M tokens | — | $0.25 |
| Output $ / M tokens | — | $0.75 |
| Results tracked | 58 | 17 |
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Category by category
Coding Claude 3.7 Sonnet leads
Claude 3.7 Sonnet: 40.6 (#136), Mercury 2: 33.5 (#255)
| Benchmark | Claude 3.7 Sonnet | Mercury 2 |
|---|---|---|
| LMArena Coding | 1361 | 1391 |
| SWE-bench Verified | 61% | — |
| SWE-bench Verified (bash only) | 52.8% | — |
| Aider Polyglot | 64.9% | — |
| LMArena WebDev | — | 1171 |
| SciCode | — | 38.7% |
| GSO | 3.8% | — |
| WeirdML | — | 43.2% |
| LiveBench Coding | 74.5% | — |
| CadEval | 54% | — |
| ALE-Bench | — | 785.58 |
Agentic & Tool Use Not comparable
Claude 3.7 Sonnet: 34.1 (#50), Mercury 2: —
| Benchmark | Claude 3.7 Sonnet | Mercury 2 |
|---|---|---|
| TheAgentCompany | 30.9% | — |
| Cybench | 20% | — |
| DeepResearch Bench | 43.6% | — |
| OSWorld | 35.8% | — |
| METR Time Horizons | 60% | — |
Reasoning Mercury 2 leads
Claude 3.7 Sonnet: 18.6 (#277), Mercury 2: 23.8 (#170)
| Benchmark | Claude 3.7 Sonnet | Mercury 2 |
|---|---|---|
| LMArena Hard Prompts | 1333 | 1362 |
| ARC-AGI-2 | 0.9% | — |
| SimpleBench | 46.4% | — |
| ARC-AGI-1 | 28.6% | — |
| CritPt | — | 0.8% |
| EnigmaEval | 4.2% | — |
| LiveBench Reasoning | 87.8% | — |
| LiveBench Data Analysis | 74% | — |
| Epoch Capabilities Index | 141.16 | — |
| ForecastBench | 61.8 | — |
| LiveBench | 76.1% | — |
Math Not comparable
Claude 3.7 Sonnet: 37.5 (#153), Mercury 2: —
| Benchmark | Claude 3.7 Sonnet | Mercury 2 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 57.8% | — |
| Omni-MATH | 33% | — |
| LiveBench Math | 79% | — |
| LMArena Math | 1337 | — |
| MATH Level 5 | 91.2% | — |
| FrontierMath (Feb 2025 set) | 4.1% | — |
Knowledge Claude 3.7 Sonnet leads
Claude 3.7 Sonnet: 39.8 (#130), Mercury 2: 36.2 (#172)
| Benchmark | Claude 3.7 Sonnet | Mercury 2 |
|---|---|---|
| LMArena Expert | 1321 | 1358 |
| GPQA Diamond | 79.7% | — |
| Humanity's Last Exam | 8% | — |
| MMLU-Pro | 78.4% | — |
| Confabulations | 14.7% | — |
| Vectara Hallucination Rate | — | 12.3% |
| GPQA (HELM) | 60.8% | — |
Multimodal Not comparable
Claude 3.7 Sonnet: 33.7 (#95), Mercury 2: —
| Benchmark | Claude 3.7 Sonnet | Mercury 2 |
|---|---|---|
| LMArena Vision | 1169 | — |
| GeoBench | 68% | — |
| VPCT | 39% | — |
| SpatialViz-Bench | 33.9% | — |
Multilingual Mercury 2 leads
Claude 3.7 Sonnet: 44.1 (#179), Mercury 2: 46.6 (#157)
| Benchmark | Claude 3.7 Sonnet | Mercury 2 |
|---|---|---|
| LMArena Non-English | 1296 | 1331 |
| LMArena Chinese | 1299 | 1417 |
| LMArena Russian | 1311 | 1304 |
| LMArena French | 1303 | — |
| LMArena German | 1301 | — |
| LMArena Japanese | 1267 | — |
| LMArena Korean | 1249 | — |
| LMArena Spanish | 1298 | — |
Instruction Following Claude 3.7 Sonnet leads
Claude 3.7 Sonnet: 72.9 (#125), Mercury 2: 70.2 (#165)
| Benchmark | Claude 3.7 Sonnet | Mercury 2 |
|---|---|---|
| LMArena Instruction Following | 1352 | 1329 |
| LiveBench Instruction Following | 81.3% | — |
| IFEval | 83.4% | — |
Long Context Claude 3.7 Sonnet leads
Claude 3.7 Sonnet: 50.3 (#10), Mercury 2: 40.5 (#154)
| Benchmark | Claude 3.7 Sonnet | Mercury 2 |
|---|---|---|
| LMArena Longer Query | 1373 | 1330 |
| Fiction.LiveBench | 83.3% | — |
Writing & Preference Too close to call
Claude 3.7 Sonnet: 54.4 (#150), Mercury 2: 53.8 (#155)
| Benchmark | Claude 3.7 Sonnet | Mercury 2 |
|---|---|---|
| LMArena Text | 1314 | 1355 |
| LMArena Creative Writing | 1332 | 1289 |
| LMArena Multi-Turn | 1339 | 1358 |
| 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 Mercury 2?
Claude 3.7 Sonnet and Mercury 2 score almost the same on the Noometry Index (39.5 vs 39.1), so choose on price, context window or the category you care about most.
Is Claude 3.7 Sonnet or Mercury 2 better for coding?
Claude 3.7 Sonnet scores higher on coding benchmarks: 40.6 versus 33.5 in the Noometry coding category.
How many benchmarks do Claude 3.7 Sonnet and Mercury 2 share?
11 benchmarks have published results for both models. Claude 3.7 Sonnet has 58 scored results on Noometry and Mercury 2 has 17.