GPT-5 Nano API Pricing — $0.05/M input, $0.40/M output
Fastest, most cost-efficient version of GPT-5 architecture.
Legacy — superseded by GPT-5.4 series See GPT-5.6 Luna pricing.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 | $0.01 |
| 1,000,000 | $0.14 |
| 10,000,000 | $1.38 |
| 100,000,000 | $13.75 |
How GPT-5 Nano compares
GPT-4o Mini — $0.26/MGPT-5.6 Luna — $0.45/MGPT-5.4 Nano — $0.46/MGPT-5 Mini — $0.69/MGPT-5.4 Mini — $1.69/MGPT-OSS 20B — $0.13/MMinistral 8B — $0.15/MAmazon Nova Lite — $0.11/M
FAQ
Is GPT-5 Nano cheaper than GPT-OSS 20B?
GPT-5 Nano costs $0.14/M blended tokens, GPT-OSS 20B costs $0.13/M — GPT-OSS 20B is cheaper.
How much does 1 million tokens cost with GPT-5 Nano?
At a 3:1 input:output ratio, 1 million blended tokens costs approximately $0.14. Pure input costs $0.05/M; pure output costs $0.40/M.
Who provides GPT-5 Nano?
GPT-5 Nano is served by OpenAI. Pricing was last verified on 2026-04-06 against https://openai.com/api/pricing.