Model comparison
o1 vs o1-pro
o1 is the stronger model overall, scoring 40.9 to 31.5 on the Noometry Index.
Last verified . 3 shared benchmarks.
Summary
- They share 3 benchmarks with published results for both. o1 scores higher in 2 categories and o1-pro in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o1 leads 41.5 to 29.7.
- The biggest single-benchmark swing is ARC-AGI-1: 30.7% for o1 and 23.3% for o1-pro.
- o1 is cheaper at $15 / $60 per million input/output tokens, against $150 / $600 for o1-pro.
Side by side
| o1 | o1-pro | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Noometry Index | 40.9 | 31.5 |
| Released | 2024-09-12 | 2025-03-19 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | 200K |
| Max output | 100K | 100K |
| Input $ / M tokens | $15 | $150 |
| Output $ / M tokens | $60 | $600 |
| Results tracked | 52 | 3 |
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Category by category
Coding Not comparable
o1: 46.1 (#70), o1-pro: —
| Benchmark | o1 | o1-pro |
|---|---|---|
| Aider Polyglot | 61.7% | — |
| WeirdML | 47.6% | — |
| LiveBench Coding | 69.7% | — |
| LMArena Coding | 1367 | — |
| CadEval | 56% | — |
| HumanEval+ | 89% | — |
| MBPP+ | 80.2% | — |
Agentic & Tool Use Not comparable
o1: 24.6 (#117), o1-pro: —
| Benchmark | o1 | o1-pro |
|---|---|---|
| Cybench | 10% | — |
| METR Time Horizons | 51.1% | — |
Reasoning o1 leads
o1: 27.9 (#111), o1-pro: 20.4 (#239)
| Benchmark | o1 | o1-pro |
|---|---|---|
| ARC-AGI-1 | 30.7% | 23.3% |
| EnigmaEval | 5.7% | 6.1% |
| SimpleBench | 41.7% | — |
| Chess Puzzles | 15% | — |
| LiveBench Reasoning | 91.6% | — |
| LMArena Hard Prompts | 1371 | — |
| DTBench | 74.7% | — |
| LiveBench Data Analysis | 65.5% | — |
| LMCA | 22.3% | — |
| Epoch Capabilities Index | 141.91 | — |
| LiveBench | 75.7% | — |
Math Not comparable
o1: 36.1 (#175), o1-pro: —
| Benchmark | o1 | o1-pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 14.7% | — |
| OTIS Mock AIME 2024-2025 | 73.3% | — |
| LiveBench Math | 80.3% | — |
| LMArena Math | 1388 | — |
| MATH Level 5 | 94.7% | — |
| FrontierMath (Feb 2025 set) | 9.3% | — |
Knowledge o1 leads
o1: 41.5 (#110), o1-pro: 29.7 (#234)
| Benchmark | o1 | o1-pro |
|---|---|---|
| Humanity's Last Exam | 8% | 8.1% |
| GPQA Diamond | 76.8% | — |
| SimpleQA Verified | 41.1% | — |
| Confabulations | 11.7% | — |
| LMArena Expert | 1361 | — |
Multimodal Not comparable
o1: 34.2 (#93), o1-pro: —
| Benchmark | o1 | o1-pro |
|---|---|---|
| LMArena Vision | 1168 | — |
| GeoBench | 80% | — |
| VPCT | 37% | — |
| SpatialViz-Bench | 41.4% | — |
Multilingual Not comparable
o1: 48.6 (#142), o1-pro: —
| Benchmark | o1 | o1-pro |
|---|---|---|
| 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
o1: 74.8 (#86), o1-pro: —
| Benchmark | o1 | o1-pro |
|---|---|---|
| LiveBench Instruction Following | 81.5% | — |
| LMArena Instruction Following | 1367 | — |
Long Context Not comparable
o1: 50.3 (#9), o1-pro: —
| Benchmark | o1 | o1-pro |
|---|---|---|
| Fiction.LiveBench | 83.3% | — |
| LMArena Longer Query | 1378 | — |
Writing & Preference Not comparable
o1: 55.6 (#144), o1-pro: —
| Benchmark | o1 | o1-pro |
|---|---|---|
| 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 o1 better than o1-pro?
o1 is the stronger model overall, scoring 40.9 to 31.5 on the Noometry Index.
Which is cheaper, o1 or o1-pro?
o1 is cheaper. It lists at $15 per million input tokens and $60 per million output tokens; o1-pro lists at $150 and $600.
Which has the bigger context window?
Both accept 200K tokens.
How many benchmarks do o1 and o1-pro share?
3 benchmarks have published results for both models. o1 has 52 scored results on Noometry and o1-pro has 3.