OpenAI API pricing
OpenAI API pricing: current per-token rates
OpenAI's current API rates per 1M tokens, input / output / cached-read, verified 2026-07-23. Every rate links to its official source.
Current OpenAI model prices
| Model | Input ($/1M) | Output ($/1M) | Cached in ($/1M) | Context |
|---|---|---|---|---|
| GPT-5.4 | $2.50 | $15 | $0.25 | 1.1M |
| GPT-5.5 | $5 | $30 | $0.50 | 1.1M |
| GPT-5.6 Sol | $5 | $30 | $0.50 | 1.1M |
| gpt-oss-120b | $0.04 | $0.17 | — | 131K |
Non-official data by OpenRouter (passthrough pricing — the provider’s own rate, no markup); verify against the provider's own page before relying on it.
Common questions
Can I use the OpenAI API for free?
No — API access is metered per token at the rates above. Subscriptions (where offered) bundle usage into a flat monthly price; the API itself is pay-as-you-go.
Which model is cheapest?
The lowest input/output rate in the table above for light work; match the model to the task rather than defaulting to the cheapest — routing the hard steps up and the cheap steps down usually beats a single choice.
Prices change. Verified 2026-07-23 — re-check the source before relying on them. Corrections: hello@aiarch.dev.
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