Model comparison
Claude Opus 4.1 vs o1-mini
Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 34.0 on the Noometry Index.
Last verified . 26 shared benchmarks.
Summary
- They share 26 benchmarks with published results for both. Claude Opus 4.1 scores higher in 8 categories and o1-mini in 1 category; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Opus 4.1 leads 32.2 to 8.8.
- The biggest single-benchmark swing is SimpleBench: 60% for Claude Opus 4.1 and 18.1% for o1-mini.
Side by side
| Claude Opus 4.1 | o1-mini | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 41.0 | 34.0 |
| Released | 2025-08-05 | 2024-09-12 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | — |
| Max output | 32K | — |
| Input $ / M tokens | $15 | — |
| Output $ / M tokens | $75 | — |
| Results tracked | 48 | 39 |
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Category by category
Coding Claude Opus 4.1 leads
Claude Opus 4.1: 44.4 (#73), o1-mini: 35.5 (#224)
| Benchmark | Claude Opus 4.1 | o1-mini |
|---|---|---|
| WeirdML | 45.9% | 36.3% |
| LMArena Coding | 1479 | 1362 |
| SWE-bench Verified | 73.3% | — |
| Aider Polyglot | — | 32.9% |
| LMArena WebDev | 1390 | — |
| LiveBench Coding | — | 48% |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 78.8% |
Agentic & Tool Use Claude Opus 4.1 leads
Claude Opus 4.1: 35.0 (#41), o1-mini: 24.6 (#118)
| Benchmark | Claude Opus 4.1 | o1-mini |
|---|---|---|
| Cybench | 42% | 10% |
| Terminal-Bench | 38% | — |
| GDPval | 43.6% | — |
| DeepResearch Bench | 48.3% | — |
| LMArena Search | 1148 | — |
| METR Time Horizons | 66.8% | — |
Reasoning Claude Opus 4.1 leads
Claude Opus 4.1: 32.2 (#76), o1-mini: 8.8 (#346)
| Benchmark | Claude Opus 4.1 | o1-mini |
|---|---|---|
| SimpleBench | 60% | 18.1% |
| LMArena Hard Prompts | 1443 | 1333 |
| Epoch Capabilities Index | 144.12 | 135.82 |
| ARC-AGI-2 | — | 0.8% |
| ARC-AGI-1 | — | 14% |
| Chess Puzzles | 7% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| LiveBench Reasoning | — | 72.3% |
| Mystery Game Puzzles | 21% | — |
| DTBench | 80% | — |
| LiveBench Data Analysis | — | 57.9% |
| LMCA | 37.1% | — |
| ForecastBench | 62 | — |
| LiveBench | — | 57.8% |
Math o1-mini leads
Claude Opus 4.1: 22.3 (#277), o1-mini: 35.4 (#186)
| Benchmark | Claude Opus 4.1 | o1-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 68.9% | 46.9% |
| LMArena Math | 1431 | 1358 |
| FrontierMath (Feb 2025 set) | 7.2% | 1.7% |
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| LiveBench Math | — | 62% |
| MATH Level 5 | — | 89.2% |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Claude Opus 4.1 leads
Claude Opus 4.1: 42.0 (#101), o1-mini: 34.9 (#192)
| Benchmark | Claude Opus 4.1 | o1-mini |
|---|---|---|
| GPQA Diamond | 77.3% | 62.4% |
| Confabulations | 17.1% | 18.6% |
| LMArena Expert | 1439 | 1316 |
| Humanity's Last Exam | 11.5% | — |
| Vectara Hallucination Rate | 11.8% | — |
Multimodal Not comparable
Claude Opus 4.1: 26.8 (#119), o1-mini: —
| Benchmark | Claude Opus 4.1 | o1-mini |
|---|---|---|
| VPCT | 35% | — |
Multilingual Claude Opus 4.1 leads
Claude Opus 4.1: 52.0 (#95), o1-mini: 43.6 (#182)
| Benchmark | Claude Opus 4.1 | o1-mini |
|---|---|---|
| LMArena Non-English | 1405 | 1289 |
| LMArena Chinese | 1427 | 1314 |
| LMArena French | 1431 | 1293 |
| LMArena German | 1413 | 1278 |
| LMArena Japanese | 1378 | 1245 |
| LMArena Korean | 1380 | 1223 |
| LMArena Russian | 1422 | 1283 |
| LMArena Spanish | 1448 | 1303 |
Instruction Following Claude Opus 4.1 leads
Claude Opus 4.1: 75.6 (#58), o1-mini: 66.7 (#206)
| Benchmark | Claude Opus 4.1 | o1-mini |
|---|---|---|
| LMArena Instruction Following | 1435 | 1304 |
| LiveBench Instruction Following | — | 65.4% |
Long Context Claude Opus 4.1 leads
Claude Opus 4.1: 44.5 (#63), o1-mini: 40.1 (#161)
| Benchmark | Claude Opus 4.1 | o1-mini |
|---|---|---|
| LMArena Longer Query | 1455 | 1320 |
Writing & Preference Claude Opus 4.1 leads
Claude Opus 4.1: 62.4 (#74), o1-mini: 48.4 (#202)
| Benchmark | Claude Opus 4.1 | o1-mini |
|---|---|---|
| LMArena Text | 1419 | 1317 |
| LMArena Creative Writing | 1412 | 1244 |
| Short-Story Creative Writing | 84.7% | 64.9% |
| LMArena Multi-Turn | 1444 | 1314 |
| LiveBench Language | — | 40.9% |
Frequently asked questions
Is Claude Opus 4.1 better than o1-mini?
Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 34.0 on the Noometry Index.
Is Claude Opus 4.1 or o1-mini better for coding?
Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 35.5 in the Noometry coding category.
How many benchmarks do Claude Opus 4.1 and o1-mini share?
26 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and o1-mini has 39.