GPT-4o API Pricing — $2.50/M input, $10.00/M output
Industry standard for reliability, vision, and speed.
Legacy — superseded by GPT-5.4 series See GPT-5.6 Terra pricing.
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 | $0.44 |
| 1,000,000 | $4.38 |
| 10,000,000 | $43.75 |
| 100,000,000 | $437.50 |
How GPT-4o 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/MGPT-5.6 Terra — $4.50/MGemini 3.1 Pro — $4.50/MGPT-4.1 — $3.50/M
Head-to-head comparisons
FAQ
Is GPT-4o cheaper than GPT-5.6 Terra?
GPT-4o costs $4.38/M blended tokens, GPT-5.6 Terra costs $4.50/M — GPT-4o is cheaper.
How much does 1 million tokens cost with GPT-4o?
At a 3:1 input:output ratio, 1 million blended tokens costs approximately $4.38. Pure input costs $2.50/M; pure output costs $10.00/M.
Who provides GPT-4o?
GPT-4o is served by OpenAI. Pricing was last verified on 2026-04-06 against https://openai.com/api/pricing.