OpenAI API pricing per 1M tokens
4 OpenAI models, standard pay-as-you-go text pricing, last checked 2026-10-13. Example cost assumes 20M input + 5M output tokens per month.
| Model | Input $/M | Output $/M | Context | Example $/mo | Cheapest other-provider model at same tier or higher |
|---|---|---|---|---|---|
| GPT-6 Luna | $0.1 | $0.5 | — | $4.50 | GPT-OSS 20B (Groq), $3.00 — saves $1.50/mo |
| Note: ≤272K input | |||||
| GPT-5.6 Luna | $0.2 | $1.2 | — | $10.00 | GPT-OSS 20B (Groq), $3.00 — saves $7.00/mo |
| GPT-6.1 Sol | $2.0 | $10.0 | — | $90.00 | Mistral Large 4, $24.05 — saves $65.95/mo |
| Note: ≤272K input; long context $4/$15 | |||||
| GPT-6 Astra | $10.0 | $50.0 | — | $450.00 | Claude Opus 5.5 (Anthropic), $180.00 — saves $270.00/mo |
| Note: ≤272K input; long context $20/$75 | |||||
“Tier” is our rough capability judgment, not a benchmark; a cheaper model at the same tier may still be worse for your task. Official source: https://platform.openai.com/docs/pricing
Compare every provider on the full price table or estimate your own bill with the savings calculator.