o1 API Pricing
OpenAI · released 2024-12-05
o1 price
1.50¢ / 1K
6.00¢ / 1K
2.62¢ / 1K
Deprecated by the vendor
Official list price from OpenAI, as recorded by models.dev
What it actually costs
| Workload | Tokens | Cost |
|---|---|---|
| Short chat reply | 500 in / 300 out | $0.0255 |
| RAG query | 4,000 in / 500 out | $0.0900 |
| Long document summary | 50,000 in / 1,000 out | $0.8100 |
| Code review of a 2k-line file | 30,000 in / 2,000 out | $0.5700 |
| 1,000 chat replies/day for 30 days | 30,000 × (500 in / 300 out) | $765.00 |
Cost = (input tokens ÷ 1,000,000 × $15.00) + (output tokens ÷ 1,000,000 × $60.00).
Benchmarks
| Benchmark | Value | Source | As of |
|---|---|---|---|
| Epoch Capabilities Index (ECI) | 141.2 | epoch | 2024-12-17 |
| Epoch Mock AIME accuracy | No public data yet | ||
| Epoch FrontierMath (T1–3) accuracy | No public data yet | ||
| Arena text rating | No public data yet | ||
| Arena coding rating (human preference votes, not task accuracy) | No public data yet | ||
| Arena math rating | No public data yet | ||
| Arena WebDev rating | No public data yet | ||
Similar ECI, lower price
| Model | ECI | Blended $/1M |
|---|---|---|
| GPT-5 Nano | 139.2 | $0.1375 |
| Gemini 3.1 Flash Lite | 144.9 | $0.5625 |
| GPT-5 Mini | 146.1 | $0.6875 |
| Qwen3.5 35B-A3B | 143.9 | $0.6875 |
| Gemini 3.5 Flash Lite | 145.6 | $0.85 |
More from OpenAI
| Model | Released | Blended $/1M |
|---|---|---|
| GPT-6.1 Terra | 2026-10-26 | $2.00 |
| GPT-6.1 Sol | 2026-09-29 | $4.00 |
| GPT-6 Sol | 2026-09-22 | $4.00 |
| GPT-6 Luna | 2026-09-22 | $0.20 |
| GPT-Live 1 | 2026-09-10 | — |
| GPT Image 2.5 Sunburst | 2026-09-08 | $11.25 |
| GPT Image 2.5 Flare | 2026-09-08 | $11.25 |
| GPT-6 Astra (Fast) | 2026-09-04 | — |
Count tokens & estimate cost for o1 See o1 on the leaderboard
Prices: OpenAI's official list price as recorded by models.dev; benchmarks: see sources below; last synced 2026-11-06.
FAQ
Who develops o1?
o1 is developed by OpenAI, released 2024-12-05.
How much does o1 cost per million tokens?
o1 costs $15.00 per 1M input tokens and $60.00 per 1M output tokens ($26.25 blended), per OpenAI's official list price as recorded by models.dev.
What is the o1 API price?
The o1 API price is $15.00 per 1M input tokens and $60.00 per 1M output tokens ($26.25 per 1M blended).
How much does o1 cost for a typical request?
A short chat reply (500 in / 300 out tokens) costs about $0.0255 on o1, at $15.00/1M input and $60.00/1M output.
Is o1 free?
o1's official API list price is $15.00 per 1M input tokens and $60.00 per 1M output tokens. This site tracks list prices only, not free tiers or trial credits — check OpenAI's site for those.
How does o1 rank on benchmarks?
o1 scores 141.2 on the Epoch Capabilities Index (ECI), ranking #85 of 107 models we track with a published ECI score.
Is there a cheaper model with a similar ECI to o1?
Yes — GPT-5 Nano scores a similar ECI (139.2) at $0.1375/1M blended, versus $26.25/1M for o1.
Where does this data come from?
Pricing for o1 comes from models.dev and LiteLLM (open MIT-licensed catalogs); benchmark scores come from Epoch AI and LMArena (open CC BY 4.0 licenses) — see /data-sources/. Last synced 2026-11-06.