GPT-5 Nano
OpenAI · openai/gpt-5-nano
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
GPT-5 Nano ranks #106 of 348 models in the default AI Benchmark Hub order (quality first, then cost). At $0.22 blended per million tokens, it is cheaper than 80% of models with published API pricing. Its 400,000-token context window is 1.5× the catalog median (262,144 tokens).
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Context
Max context: 400000
Max output: 128000
Max output: 128000
Pricing
Input / 1M: 0.05
Output / 1M: 0.40
Blend / 1M: 0.22
Output / 1M: 0.40
Blend / 1M: 0.22
Quality
Quality index: —
Provider
Provider: OpenAI
Moderated: yes
Moderated: yes
Monthly cost at this blended rate
Estimated API spend if every token is billed at $0.22per million (the blend of this model's input and output prices). Real bills depend on the input/output mix.
| Tokens / month | Est. cost (USD) |
|---|---|
| 1,000,000 | $0.22 |
| 10,000,000 | $2.25 |
| 100,000,000 | $22.50 |
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