O1 API pricing
OpenAI · chat model · 200K context · ranked #1758 of 1809 by input price
What O1 costs in practice
O1 is priced at $15 per million input tokens and $60 per million output tokens , with cached input billed at $7.5 per million — roughly 50% cheaper than fresh input, which matters if your app resends a large system prompt. Against the median priced chat model ($0.5/1M in), this sits at 30.0×.
Monthly cost examples
Assuming 1,200 prompt + 400 completion tokens per request unless noted, billed 30 days a month and without cache hits.
| Workload | Cost / month | Cost / day |
|---|---|---|
| 1,000 requests/day | $1260 | $42 |
| 10,000 requests/day | $12600 | $420 |
| 100,000 requests/day | $126000 | $4200 |
| 1M summaries/month | $137998.62 | $4599.95 |
Model a different profile in the cost calculator.
Capabilities
Provider description
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...
Cheaper alternatives
Ranked by blended cost (3× input + 1× output) — cheaper, but check context and capabilities before switching.
| # | Model | Provider | Input $/1M | Output $/1M | Cached $/1M | Context |
|---|---|---|---|---|---|---|
| 1 | Gemini Exp 1114 | Google Gemini | free | free | — | 1.0M |
| 2 | Gemini Exp 1206 | Google Gemini | free | free | — | 2.1M |
| 3 | Gemma 3 27b It | Google Gemini | free | free | — | 131K |
| 4 | Gemma 4 26b A4b It | Google Gemini | free | free | — | 262K |
| 5 | Gemma 4 31b It | Google Gemini | free | free | — | 262K |
| 6 | Learnlm 1.5 Pro Experimental | Google Gemini | free | free | — | 33K |
Data provenance
This page is assembled from the sources below. Where two sources disagree, both are shown.
- Our input price: $15
- Second source: —
- Our output price: $60
- Second source: —
More from OpenAI
Frequently asked
› How much does O1 cost per 1,000 tokens?
About $0.015 for input and $0.06 for output tokens, based on the per-million rates on this page.
› Is O1 cheaper than other models?
By input price it ranks #1758 of 1809 priced chat models in this index, putting it in the more expensive half of the market.
› How often is O1's price checked?
The dataset was last refreshed 2026-09-13 13:40 UTC. Providers can change pricing at any time — verify with OpenAI before committing to a budget.