Model comparison
Claude 2.1 vs o1
o1 is the stronger model overall, scoring 40.9 to 25.2 on the Noometry Index.
Last verified . 5 shared benchmarks.
Summary
- They share 5 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and o1 in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o1 leads 41.5 to 15.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 73.3% for o1.
Side by side
| Claude 2.1 | o1 | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 25.2 | 40.9 |
| Released | 2023-11-21 | 2024-09-12 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $15 |
| Output $ / M tokens | — | $60 |
| Results tracked | 7 | 52 |
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Category by category
Coding o1 leads
Claude 2.1: 26.2 (#327), o1: 46.1 (#70)
| Benchmark | Claude 2.1 | o1 |
|---|---|---|
| WeirdML | 7.1% | 47.6% |
| Aider Polyglot | — | 61.7% |
| LiveBench Coding | — | 69.7% |
| LMArena Coding | — | 1367 |
| CadEval | — | 56% |
| HumanEval+ | — | 89% |
| MBPP+ | — | 80.2% |
Agentic & Tool Use Not comparable
Claude 2.1: —, o1: 24.6 (#117)
| Benchmark | Claude 2.1 | o1 |
|---|---|---|
| Cybench | — | 10% |
| METR Time Horizons | — | 51.1% |
Reasoning o1 leads
Claude 2.1: 21.4 (#221), o1: 27.9 (#111)
| Benchmark | Claude 2.1 | o1 |
|---|---|---|
| DTBench | 51% | 74.7% |
| Epoch Capabilities Index | 119.27 | 141.91 |
| SimpleBench | — | 41.7% |
| ARC-AGI-1 | — | 30.7% |
| Chess Puzzles | — | 15% |
| EnigmaEval | — | 5.7% |
| LiveBench Reasoning | — | 91.6% |
| LMArena Hard Prompts | — | 1371 |
| LiveBench Data Analysis | — | 65.5% |
| LMCA | — | 22.3% |
| ForecastBench | 54.2 | — |
| LiveBench | — | 75.7% |
Math o1 leads
Claude 2.1: 10.2 (#315), o1: 36.1 (#175)
| Benchmark | Claude 2.1 | o1 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 73.3% |
| FrontierMath (Tiers 1-3) | — | 14.7% |
| LiveBench Math | — | 80.3% |
| LMArena Math | — | 1388 |
| MATH Level 5 | — | 94.7% |
| FrontierMath (Feb 2025 set) | — | 9.3% |
Knowledge o1 leads
Claude 2.1: 15.4 (#292), o1: 41.5 (#110)
| Benchmark | Claude 2.1 | o1 |
|---|---|---|
| GPQA Diamond | 33% | 76.8% |
| Humanity's Last Exam | — | 8% |
| SimpleQA Verified | — | 41.1% |
| Confabulations | — | 11.7% |
| LMArena Expert | — | 1361 |
| MMLU | 73.5% | — |
Multimodal Not comparable
Claude 2.1: —, o1: 34.2 (#93)
| Benchmark | Claude 2.1 | o1 |
|---|---|---|
| LMArena Vision | — | 1168 |
| GeoBench | — | 80% |
| VPCT | — | 37% |
| SpatialViz-Bench | — | 41.4% |
Multilingual Not comparable
Claude 2.1: —, o1: 48.6 (#142)
| Benchmark | Claude 2.1 | o1 |
|---|---|---|
| LMArena Non-English | — | 1358 |
| LMArena Chinese | — | 1394 |
| LMArena French | — | 1344 |
| LMArena German | — | 1337 |
| LMArena Japanese | — | 1346 |
| LMArena Korean | — | 1396 |
| LMArena Russian | — | 1356 |
| LMArena Spanish | — | 1345 |
Instruction Following Not comparable
Claude 2.1: —, o1: 74.8 (#86)
| Benchmark | Claude 2.1 | o1 |
|---|---|---|
| LiveBench Instruction Following | — | 81.5% |
| LMArena Instruction Following | — | 1367 |
Long Context Not comparable
Claude 2.1: —, o1: 50.3 (#9)
| Benchmark | Claude 2.1 | o1 |
|---|---|---|
| Fiction.LiveBench | — | 83.3% |
| LMArena Longer Query | — | 1378 |
Writing & Preference Not comparable
Claude 2.1: —, o1: 55.6 (#144)
| Benchmark | Claude 2.1 | o1 |
|---|---|---|
| LMArena Text | — | 1366 |
| LMArena Creative Writing | — | 1348 |
| Short-Story Creative Writing | — | 70.2% |
| LMArena Multi-Turn | — | 1369 |
| LiveBench Language | — | 65.4% |
Frequently asked questions
Is Claude 2.1 better than o1?
o1 is the stronger model overall, scoring 40.9 to 25.2 on the Noometry Index.
Is Claude 2.1 or o1 better for coding?
o1 scores higher on coding benchmarks: 46.1 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and o1 share?
5 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and o1 has 52.