OpenAI model product
o1
A research preview model focused on mathematical and logical reasoning capabilities, demonstrating improved performance on tasks requiring step-by-step reasoning, mathematical problem-solving, and code generation.
Updated Aug 12, 2026. Default version: o1
LLMBoard score36.3o1
Coverage100%16 benchmark families
Context window200KTokens
Official input price$15OpenAI API
o1 Specifications
Technical details for the model's default version.
- Version
- o1
- Released
- Dec 17, 2024
- Knowledge cutoff
- Sep 1, 2023
- Parameters
- N/A
- Context window
- 200K
- Max output
- 100K
- Inputs
- image, pdf, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
o1 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
o1 Benchmark Results
Benchmark scores for o1.
| GPQA Biology | 0.7 | 1 | 1 | 100.0% | C | |
| GPQA Chemistry | 0.6 | 1 | 1 | 100.0% | C | |
| GPQA Physics | 0.9 | 1 | 1 | 100.0% | C | |
| MATH | 1.0 | 2 | 71 | 98.6% | C | |
| MMLU | 0.9 | 2 | 100 | 99.0% | C | |
| GSM8k | 1.0 | 3 | 48 | 95.7% | C | |
| MGSM | 0.9 | 10 | 31 | 70.0% | C | |
| TAU-bench Retail | 0.7 | 10 | 25 | 62.5% | C | |
| MathVista | 0.7 | 12 | 39 | 71.0% | C | |
| TAU-bench Airline | 0.5 | 12 | 23 | 50.0% | C | |
| FrontierMath | 0.1 | 17 | 17 | 0.0% | C | |
| SimpleQA | 0.5 | 17 | 46 | 64.4% | C | |
| MMMU | 0.8 | 18 | 63 | 72.6% | C | |
| MMMLU | 0.9 | 19 | 49 | 62.5% | C | |
| HumanEval | 0.9 | 26 | 66 | 61.5% | C | |
| LiveBench | 0.7 | 33 | 38 | 13.5% | C | |
| AIME 2024 | 0.7 | 35 | 53 | 34.6% | C | |
| SWE-Bench Verified | 0.4 | 95 | 105 | 9.6% | C | |
| GPQA | 0.8 | 96 | 234 | 59.2% | C |
o1 Arena Results
Preference and agent-evaluation results for the default version.
| vision style control | overall | 76 | 1193.4 | 3,694 | N/A | |
| vision | overall | 89 | 1168.6 | 3,694 | N/A | |
| text style control | overall | 135 | 1402.2 | 27,807 | N/A | |
| text | overall | 164 | 1365.9 | 27,807 | N/A |
o1 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $15 input, $60 output per 1M
- Official provider
- OpenAI
- Lowest third-party
- N/A
- Tracked offerings
- 1
| OpenAI | o1 | global | $15 | $60 | 200K |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
o1 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| o1 | 36.3 | N/A | 200K | 100K | No | Proprietary | |
| o1-preview | N/A | N/A | 128K | 32.8K | No | Proprietary |
What is o1?
Key information about o1 and its available data.
A research preview model focused on mathematical and logical reasoning capabilities, demonstrating improved performance on tasks requiring step-by-step reasoning, mathematical problem-solving, and code generation. The model shows enhanced capabilities in formal reasoning while maintaining strong general capabilities.
Data as of 2026-08-11.
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FAQ
Common questions about o1.
When was o1 released?
o1's default version was released on Dec 17, 2024.
How much does o1 cost?
o1's official API price is $15 per million input tokens and $60 per million output tokens via OpenAI.
Who created o1?
o1 was created by OpenAI.
What is the context window for o1?
The default version has a 200K token context window.
Is o1 open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer o1?
1 provider offerings are linked to the default version.
What models should I compare o1 with?
Nearby ranked alternatives include MiniMax M1 80K, LongCat Flash Chat, Qwen3 Next 80B A3B.