o3-Mini API Pricing — $1.10/M input, $4.40/M output
Compact reasoning model: blazing speed with deep analytical logic.
Legacy — use GPT-5.6 Luna See GPT-5.6 Luna pricing.
No announced shutdown date. Source · Full retirement tracker
Speed
Not yet measured — see the speed benchmark leaderboard for models we do track.
Cost at scale
| Tokens / month | Est. cost (blended 3:1) |
|---|---|
| 100,000 | $0.19 |
| 1,000,000 | $1.93 |
| 10,000,000 | $19.25 |
| 100,000,000 | $192.50 |
How o3-Mini compares
GPT-5 Nano — $0.14/MGPT-4o Mini — $0.26/MGPT-5.6 Luna — $0.45/MGPT-5.4 Nano — $0.46/MGPT-5 Mini — $0.69/MClaude Haiku 4.5 — $2.00/MGLM-5.2 — $2.15/MGPT-5.4 Mini — $1.69/M
FAQ
Is o3-Mini cheaper than Claude Haiku 4.5?
o3-Mini costs $1.93/M blended tokens, Claude Haiku 4.5 costs $2.00/M — o3-Mini is cheaper.
How much does 1 million tokens cost with o3-Mini?
At a 3:1 input:output ratio, 1 million blended tokens costs approximately $1.93. Pure input costs $1.10/M; pure output costs $4.40/M.
Who provides o3-Mini?
o3-Mini is served by OpenAI. Pricing was last verified on 2026-04-06 against https://openai.com/api/pricing.