GPT-5.1
GPT-5.1 is a deprecated coding and agent model with optional reasoning. Its default setting is none, and its dated snapshot is from November 2025.
Deprecated API; check access details
No-reasoning and reasoning modes share a model ID
The supported efforts are none, low, medium and high. Its 400,000-token context supports text and image input. These settings differ from the original GPT-5 effort range, which includes minimal rather than none.GPT-5.1 official model documentation
Review an existing integration
Practical guidance. Preserve the intended effort when updating an integration. Compare tool calls, structured results and the final explanation on representative tasks. Record settings with the model name so later comparisons do not mix different reasoning behavior.
Specifications & access
| Detail | Value and conditions |
|---|---|
| Status | Deprecated API; check access details |
| Access | API |
| Model identifiers | gpt-5.1gpt-5.1-2025-11-13 |
| Context window | 400,000 tokens Published context for this deprecated release GPT-5.1 official model documentation |
| Maximum output | 128,000 tokens Published maximum output, bounded by the remaining context GPT-5.1 official model documentation |
| Provider status | Deprecated in the current OpenAI model catalog; confirm remaining account access.GPT-5.1 official model documentation |