OpenAI model
GPT-5.1 Codex
GPT-5.1 Codex is available through 3 providers and 6 concrete deployments tracked by ALLM.
openai/gpt-5.1-codex
Deployments
6
Providers
3
Max context
400K
Input from
$1.25 / 1M
GPT-5.1 Codex 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 | Responses | eu | $1.38 / 1M | $11.00 / 1M | 272K | supported |
| Azure AI | global/gpt-5.1-codex | Responses | global | $1.25 / 1M | $10.00 / 1M | 272K | supported |
| Azure AI | gpt-5.1-codex | Responses | global | $1.25 / 1M | $10.00 / 1M | 272K | supported |
| Azure AI | us/gpt-5.1-codex | Responses | us | $1.38 / 1M | $11.00 / 1M | 272K | supported |
| OpenAI | gpt-5.1-codex | Responses | global | $1.25 / 1M | $10.00 / 1M | 272K | supported |
| OpenRouter | openai/gpt-5.1-codex | Chat | global | $1.25 / 1M | $10.00 / 1M | 400K | supported |
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