SFAI / MODEL PROFILE
OpenAI: GPT-5.1-Codex
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
- Developer
- openai
- Input modalities
- text, image
- Output modalities
- text
- Context tokens
- 400,000
- Latest price observation
- 2026-09-28
- Lowest paired standard token quote
- $1.25 input / $10.00 output per 1M tokens
Dated price and provider records
| Provider and channel | Input | Output or native rate | Unit and status | Source and observation |
|---|---|---|---|---|
| Automatic routingopenrouter | $1.25 | $10.00 | 1M tokenspriced · USD | openrouter2026-09-28 |
These are dated, non-executable observations. Verify the exact endpoint, price and terms with the source before use. Unknown values are not free.