Model comparison
Claude 3.5 Sonnet vs Mercury
Mercury is the stronger model overall, scoring 37.6 to 34.6 on the Noometry Index.
Last verified . 8 shared benchmarks.
Summary
- They share 8 benchmarks with published results for both. Claude 3.5 Sonnet scores higher in 6 categories and Mercury in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Claude 3.5 Sonnet leads 52.9 to 46.2.
Side by side
| Claude 3.5 Sonnet | Mercury | |
|---|---|---|
| Provider | Anthropic | Inception |
| Noometry Index | 34.6 | 37.6 |
| Released | 2024-06-20 | — |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 60 | 9 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Too close to call
Claude 3.5 Sonnet: 39.0 (#165), Mercury: 38.7 (#170)
| Benchmark | Claude 3.5 Sonnet | Mercury |
|---|---|---|
| LMArena Coding | 1342 | 1322 |
| Aider Polyglot | 51.6% | — |
| GSO | 4.6% | — |
| WeirdML | 40% | — |
| BigCodeBench Instruct | 46.8% | — |
| LiveBench Coding | 67.1% | — |
| BigCodeBench Complete | 58.6% | — |
| CadEval | 48% | — |
| HumanEval+ | 81.7% | — |
| MBPP+ | 74.3% | — |
Agentic & Tool Use Not comparable
Claude 3.5 Sonnet: 32.3 (#67), Mercury: —
| Benchmark | Claude 3.5 Sonnet | Mercury |
|---|---|---|
| TheAgentCompany | 24% | — |
| Cybench | 17.5% | — |
| BALROG | 32.6% | — |
| METR Time Horizons | 45.2% | — |
Reasoning Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 23.1 (#183), Mercury: 17.5 (#293)
| Benchmark | Claude 3.5 Sonnet | Mercury |
|---|---|---|
| LMArena Hard Prompts | 1305 | 1285 |
| SimpleBench | 41.4% | — |
| Kagi LLM Benchmark | — | 21.6% |
| EnigmaEval | 0.9% | — |
| LiveBench Reasoning | 56.7% | — |
| DTBench | 67.8% | — |
| LiveBench Data Analysis | 55% | — |
| Epoch Capabilities Index | 133.55 | — |
| ForecastBench | 60.7 | — |
| LiveBench | 59% | — |
Math Not comparable
Claude 3.5 Sonnet: 19.2 (#288), Mercury: —
| Benchmark | Claude 3.5 Sonnet | Mercury |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 8.5% | — |
| Omni-MATH | 27.6% | — |
| LiveBench Math | 52.3% | — |
| LMArena Math | 1307 | — |
| MATH Level 5 | 56.9% | — |
| FrontierMath (Feb 2025 set) | 2.1% | — |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Not comparable
Claude 3.5 Sonnet: 28.6 (#245), Mercury: —
| Benchmark | Claude 3.5 Sonnet | Mercury |
|---|---|---|
| GPQA Diamond | 55.3% | — |
| Humanity's Last Exam | 4.1% | — |
| MMLU-Pro | 77.7% | — |
| Confabulations | 19.9% | — |
| GPQA (HELM) | 56.5% | — |
| LMArena Expert | 1265 | — |
| MMLU | 87.3% | — |
Multimodal Not comparable
Claude 3.5 Sonnet: 26.5 (#120), Mercury: —
| Benchmark | Claude 3.5 Sonnet | Mercury |
|---|---|---|
| LMArena Vision | 1125 | — |
| Video-MME | 60% | — |
| GeoBench | 62% | — |
| VPCT | 33% | — |
Multilingual Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 43.2 (#185), Mercury: 41.6 (#206)
| Benchmark | Claude 3.5 Sonnet | Mercury |
|---|---|---|
| LMArena Non-English | 1283 | 1260 |
| LMArena Chinese | 1272 | — |
| LMArena French | 1305 | — |
| LMArena German | 1297 | — |
| LMArena Japanese | 1234 | — |
| LMArena Korean | 1200 | — |
| LMArena Russian | 1306 | — |
| LMArena Spanish | 1290 | — |
Instruction Following Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 68.8 (#182), Mercury: 65.2 (#224)
| Benchmark | Claude 3.5 Sonnet | Mercury |
|---|---|---|
| LMArena Instruction Following | 1297 | 1239 |
| LiveBench Instruction Following | 69.3% | — |
| IFEval | 85.5% | — |
Long Context Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 39.9 (#167), Mercury: 38.4 (#198)
| Benchmark | Claude 3.5 Sonnet | Mercury |
|---|---|---|
| LMArena Longer Query | 1311 | 1266 |
Writing & Preference Claude 3.5 Sonnet leads
Claude 3.5 Sonnet: 52.9 (#164), Mercury: 46.2 (#221)
| Benchmark | Claude 3.5 Sonnet | Mercury |
|---|---|---|
| LMArena Text | 1298 | 1282 |
| LMArena Creative Writing | 1292 | 1191 |
| LMArena Multi-Turn | 1326 | 1282 |
| Short-Story Creative Writing | 80.3% | — |
| EQ-Bench Creative Writing | 1451 | — |
| WildBench | 79.2% | — |
| LiveBench Language | 53.8% | — |
Frequently asked questions
Is Claude 3.5 Sonnet better than Mercury?
Mercury is the stronger model overall, scoring 37.6 to 34.6 on the Noometry Index.
Is Claude 3.5 Sonnet or Mercury better for coding?
They score almost the same on coding (39.0 vs 38.7); test both on your own repository before choosing.
How many benchmarks do Claude 3.5 Sonnet and Mercury share?
8 benchmarks have published results for both models. Claude 3.5 Sonnet has 60 scored results on Noometry and Mercury has 9.