Model comparison
Claude 3 Sonnet vs o3-mini
o3-mini is the stronger model overall, scoring 36.7 to 29.0 on the Noometry Index.
Last verified . 23 shared benchmarks.
Summary
- They share 23 benchmarks with published results for both. Claude 3 Sonnet scores higher in 2 categories and o3-mini in 6 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where o3-mini leads 28.1 to 10.7.
- The biggest single-benchmark swing is MATH Level 5: 18.2% for Claude 3 Sonnet and 96.5% for o3-mini.
Side by side
| Claude 3 Sonnet | o3-mini | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 29.0 | 36.7 |
| Released | 2024-02-29 | 2024-12-20 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $1.10 |
| Output $ / M tokens | — | $4.40 |
| Results tracked | 30 | 51 |
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Category by category
Coding o3-mini leads
Claude 3 Sonnet: 29.6 (#302), o3-mini: 40.8 (#132)
| Benchmark | Claude 3 Sonnet | o3-mini |
|---|---|---|
| WeirdML | 10.2% | 43.7% |
| LMArena Coding | 1223 | 1378 |
| Aider Polyglot | — | 60.4% |
| SciCode | — | 39.8% |
| GSO | — | 1.3% |
| BigCodeBench Instruct | 42.7% | — |
| LiveBench Coding | — | 82.7% |
| BigCodeBench Complete | 53.8% | — |
| CadEval | — | 54% |
| HumanEval+ | 64% | — |
| MBPP+ | 69.3% | — |
Agentic & Tool Use Not comparable
Claude 3 Sonnet: —, o3-mini: 29.6 (#84)
| Benchmark | Claude 3 Sonnet | o3-mini |
|---|---|---|
| Cybench | — | 22.5% |
Reasoning Claude 3 Sonnet leads
Claude 3 Sonnet: 20.5 (#237), o3-mini: 16.3 (#305)
| Benchmark | Claude 3 Sonnet | o3-mini |
|---|---|---|
| LMArena Hard Prompts | 1197 | 1366 |
| DTBench | 53.6% | 68.8% |
| Epoch Capabilities Index | 120.7 | 140.34 |
| ARC-AGI-2 | — | 3% |
| SimpleBench | — | 22.8% |
| ARC-AGI-1 | — | 34.5% |
| CritPt | — | 0.3% |
| Chess Puzzles | — | 17% |
| LiveBench Reasoning | — | 89.6% |
| Mystery Game Puzzles | — | 7% |
| LiveBench Data Analysis | — | 70.6% |
| LMCA | — | 19% |
| ForecastBench | — | 59.6 |
| LiveBench | — | 75.9% |
| WinoGrande | 75.1% | — |
Math o3-mini leads
Claude 3 Sonnet: 10.7 (#310), o3-mini: 28.1 (#244)
| Benchmark | Claude 3 Sonnet | o3-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | 76.9% |
| LMArena Math | 1213 | 1396 |
| MATH Level 5 | 18.2% | 96.5% |
| FrontierMath (Tiers 1-3) | — | 18.6% |
| FrontierMath Tier 4 | — | 0% |
| LiveBench Math | — | 77.3% |
| FrontierMath (Feb 2025 set) | — | 12.4% |
| FrontierMath Tier 4 (v1) | — | 4.2% |
Knowledge o3-mini leads
Claude 3 Sonnet: 21.1 (#276), o3-mini: 38.3 (#146)
| Benchmark | Claude 3 Sonnet | o3-mini |
|---|---|---|
| GPQA Diamond | 40.6% | 77% |
| LMArena Expert | 1173 | 1364 |
| SimpleQA Verified | — | 15.3% |
| Confabulations | — | 17.9% |
| MMLU | 75.9% | — |
Multimodal Not comparable
Claude 3 Sonnet: 25.2 (#125), o3-mini: —
| Benchmark | Claude 3 Sonnet | o3-mini |
|---|---|---|
| LMArena Vision | 984 | — |
Multilingual o3-mini leads
Claude 3 Sonnet: 37.8 (#234), o3-mini: 45.7 (#164)
| Benchmark | Claude 3 Sonnet | o3-mini |
|---|---|---|
| LMArena Non-English | 1205 | 1319 |
| LMArena Chinese | 1189 | 1379 |
| LMArena French | 1229 | 1334 |
| LMArena German | 1204 | 1303 |
| LMArena Japanese | 1131 | 1286 |
| LMArena Korean | 1128 | 1314 |
| LMArena Russian | 1227 | 1304 |
| LMArena Spanish | 1204 | 1321 |
Instruction Following o3-mini leads
Claude 3 Sonnet: 62.8 (#235), o3-mini: 75.1 (#72)
| Benchmark | Claude 3 Sonnet | o3-mini |
|---|---|---|
| LMArena Instruction Following | 1199 | 1337 |
| LiveBench Instruction Following | — | 84.4% |
Long Context Claude 3 Sonnet leads
Claude 3 Sonnet: 36.7 (#228), o3-mini: 33.8 (#256)
| Benchmark | Claude 3 Sonnet | o3-mini |
|---|---|---|
| LMArena Longer Query | 1211 | 1343 |
| Fiction.LiveBench | — | 50% |
Writing & Preference o3-mini leads
Claude 3 Sonnet: 42.1 (#238), o3-mini: 50.3 (#182)
| Benchmark | Claude 3 Sonnet | o3-mini |
|---|---|---|
| LMArena Text | 1218 | 1337 |
| LMArena Creative Writing | 1186 | 1286 |
| LMArena Multi-Turn | 1227 | 1320 |
| Short-Story Creative Writing | — | 61.7% |
| LiveBench Language | — | 50.7% |
Frequently asked questions
Is Claude 3 Sonnet better than o3-mini?
o3-mini is the stronger model overall, scoring 36.7 to 29.0 on the Noometry Index.
Is Claude 3 Sonnet or o3-mini better for coding?
o3-mini scores higher on coding benchmarks: 40.8 versus 29.6 in the Noometry coding category.
How many benchmarks do Claude 3 Sonnet and o3-mini share?
23 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and o3-mini has 51.