OpenAI model
GPT-5.1 Codex Max
GPT-5.1 Codex Max is available through 5 providers and 7 concrete deployments tracked by ALLM.
openai/gpt-5.1-codex-max
Deployments
7
Providers
5
Max context
400K
Input from
$1.25 / 1M
GPT-5.1 Codex Max provider comparison
Pricing and compatibility are tracked per provider deployment, because the same model can expose different features depending on where it runs.
| Provider | Provider model ID | Mode | Region | Input | Output | Context | Tools |
|---|---|---|---|---|---|---|---|
| Azure AI | eu/gpt-5.1-codex-max | Chat | eu | $1.38 / 1M | $11.00 / 1M | — | unknown |
| Azure AI | gpt-5.1-codex-max | Responses | global | $1.25 / 1M | $10.00 / 1M | 272K | supported |
| Azure AI | us/gpt-5.1-codex-max | Chat | us | $1.38 / 1M | $11.00 / 1M | — | unknown |
| ChatGPT | gpt-5.1-codex-max | Responses | global | — | — | 128K | supported |
| GitHub Copilot | gpt-5.1-codex-max | Responses | global | — | — | 128K | supported |
| OpenAI | gpt-5.1-codex-max | Responses | global | $1.25 / 1M | $10.00 / 1M | 272K | supported |
| OpenRouter | openai/gpt-5.1-codex-max | Chat | global | $1.25 / 1M | $10.00 / 1M | 400K | supported |
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