o1 pricing & benchmarks
o1 is available from OpenAI at $15.00 per million input tokens and $60.00 per million output tokens ($26.25 blended at 3:1). It accepts up to 200,000 tokens of context. The latest and strongest model family from OpenAI, o1 is designed to spend more time thinking before responding. The o1 model series is trained with large-scale reinforcement learning to reason...
Pricing
Per million tokens · OpenRouter
Input$15.00
Output$60.00
Blended (3:1)$26.25
Specification
openai/o1
Context window200K
Max output100K
ReleasedDec 2024
LicenceProprietary
Modalitiesin:text, in:image, in:file, out:text
Benchmarks
Independently run — not vendor self-reports. Every score links its source.
| Benchmark | Score | Config | Run | Source |
|---|---|---|---|---|
| GPQA Diamond | 76.8% ±3.0 | — | 2025-02-13 | Independently run · Epoch AI |
| OTIS Mock AIME | 73.3% ±6.7 | — | 2026-07-15 | Independently run · Epoch AI |
Scores published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0.
Cheaper models that score at least as well on GPQA Diamond
Strictly lower blended price AND an equal-or-higher GPQA Diamond score. One benchmark is one dimension — a model that wins here may still be weaker at your specific task.
| Model | Provider | Blended $/1M | GPQA Diamond | |
|---|---|---|---|---|
| DeepSeek V4 Flash 0731 | DeepSeek | $0.113 (−100%) | 91.0% | Compare → |
| GPT-5.6 Luna | OpenAI | $0.225 (−99%) | 91.6% | Compare → |
| GLM 5.2 | Zhipu AI | $0.387 (−99%) | 91.9% | Compare → |
| Qwen3.6 Flash | Alibaba | $0.422 (−98%) | 83.3% | Compare → |
| GPT-5.4 Nano | OpenAI | $0.463 (−98%) | 78.5% | Compare → |
Compare o1
FAQ
How much does o1 cost?
o1 costs $15.00 per million input tokens and $60.00 per million output tokens on OpenRouter. At a 3:1 input:output mix that blends to $26.25 per million tokens.
What is o1's context window?
o1 accepts up to 200,000 tokens of context, and can generate up to 100,000 output tokens.
How good is o1 on benchmarks?
o1 scores 76.8% on GPQA Diamond, independently run and published by Epoch AI. 2 benchmark results are listed on this page, each with its run date and source.
Is there a cheaper model as good as o1?
Yes — 5 models in our catalogue cost less per token than o1 and score at least as high on the same benchmark. The cheapest is DeepSeek V4 Flash 0731 at $0.113 per million tokens blended.