Unknown
OpenAI: GPT-5.1-Codex-Mini API pricing
Last updated
- Input / 1M tokens
- $0.25
- Output / 1M tokens
- $2.00
- Blended / 1M
- $0.688
- 3:1 input:output
- Context window
- 400K
- tokens
- Arena Elo
- 1200
Context window
How much text fits in a single request.
400,000 tokens, roughly 300K words or 600 pages of English text.
Estimate assumes ~0.75 words per token and 500 words per page. Input and output share this limit.
Price history
USD per 1M tokens at each recorded price change.
| Date | Input / 1M | Output / 1M | Blended / 1M | Change |
|---|---|---|---|---|
| $0.25 | $2.00 | $0.688 | Launch |
Changelog
Notable updates to OpenAI: GPT-5.1-Codex-Mini.
OpenAI: GPT-5.1-Codex-Mini is now tracked, priced at 0.25 USD per 1M input tokens and 2 USD per 1M output tokens, with a 400000-token context window and 1200 Elo.
Summaries are AI-generated from tracked data changes.