Models & APIs / OpenAI API pricing Verified 29 Oct 2026, 12:00 UTC Source developers.openai.com/api/docs/pricing
OpenAI API · per 1M tokensby OpenAI
$0.50 / 1M outputGPT-6 Luna · the cheapest model
OpenAI API costs $0.10–$10.00 per 1M input tokens and $0.50–$50.00 per 1M output tokens. Output tokens cost several times more than input, so long answers drive the bill.
Cheapest output$0.50GPT-6 Luna · per 1M
Top model$50.00GPT-6 Astra · per 1M output
Or subscribe$8/moChatGPT GoEvery model, per 1M tokens
USD list price, before batch or volume discounts| Model | Input | Output | Cached input | Context |
|---|---|---|---|---|
| GPT-6 Astra | $10.00 | $50.00 | $1.00 | — |
| GPT-6.1 Sol | $2.00 | $10.00 | $0.10 | — |
| GPT-6.1 Terra | $1.00 | $5.00 | $0.05 | — |
| GPT-6 Luna | $0.10 | $0.50 | $0.01 | — |
What will you pay?
$800.00
per month on GPT-6 Astra
Prices from developers.openai.com/api/docs/pricing How we collect prices Some links are affiliate links; they never change the prices or the order shown. Disclosure