GPT-5.1 Codex Max
GPT‑5.1-Codex-Max is purpose-built for agentic coding.
text + image + file → text · made by OpenAI
Sold by 6 ways
| Seller | Lane | Rate |
|---|---|---|
| Databricks 0 ways | $1.25per Mtok in$10per Mtok out$0.13per Mtok cached$1.25per Mtok cache write | |
| Databricks cloudnot on the seller's list today | standard | $1.25per Mtok in$10per Mtok out$0.13per Mtok cached$1.25per Mtok cache writeraw.githubusercontent.com · read 2026-09-22 |
| DigitalOcean 0 ways | $1.25per Mtok in$10per Mtok out$0.12per Mtok cached | |
| DigitalOcean cloudnot on the seller's list today | standard | $1.25per Mtok in$10per Mtok out$0.12per Mtok cachedmodels.dev · read 2026-10-22 |
| Microsoft Azure AI cloud | standard | $1.25per Mtok in$10per Mtok out$0.12per Mtok cachedmodels.dev · read 2026-10-31 |
| Nous Research aggregator | standard | $1.25per Mtok in$10per Mtok out$0.12per Mtok cachedinference-api.nousresearch.com · read 2026-09-12 |
| OpenRouter aggregator | standard | $1.25per Mtok in$10per Mtok out$0.12per Mtok cachedopenrouter.ai · read 2026-08-24 |
| Vercel AI Gateway aggregator | standard | $1.25per Mtok in$10per Mtok out$0.12per Mtok cachedai-gateway.vercel.sh · read 2026-08-25 |
Measured 4 standings
| Place | Board | Metric | Score |
|---|---|---|---|
| 10thof 49 | Metr time horizons — Epoch AI | average_score (max) | 0.708 |
| 45thof 132 | Ale bench — Epoch AI | Performance (max) | 1208.83 |
| 50thof 202 | Terminalbench — Epoch AI | Accuracy mean (max) | 0.604 |
| 71stof 84 | Proofbench — Epoch AI | Accuracy (max) | 9 |
About
GPT-5.1 Codex Max — a text model from OpenAI, sold by 4 companies from $1.25 in and $10 out per million tokens, placed 10th of 49 on Metr time horizons — Epoch AI.
It takes text, images and files and returns text, with a context window of 400,000 tokens. It was published in November 2025, trained on material up to September 2024. Its sellers say it can reason step by step and call a tool. The catalogue files it under code and agents. Four companies sell it. The cheapest is $1.25 in and $10 out per million tokens at Microsoft Azure AI. It has been measured on 4 boards, and stands best at 10th of 49 on Metr time horizons — Epoch AI.
Every current figure
- Maker
- OpenAI
- Register
- model
- Takes
- text + image + file
- Returns
- text
- Context
- 400,000 tokens
- Longest answer
- 128,000 tokens
- Published
- November 2025
- Knowledge to
- September 2024
- Licence
- not read
- Sellers
- 4
- Maker's own price
- not read
- Price
- $1.25 in and $10 out per million tokens — Microsoft Azure AI
- Boards
- 4
- Best place
- 10th of 49 — Metr time horizons — Epoch AI
Known as 2 names
5.1 codex maxopenai/gpt-5.1-codex-max