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Model spotlight
GPT-5.1-Codex
Codex GPT for repository edits, code review, and practical software agents
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GPT-5.1-Codex FAQ
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Model family
GPT
-
Focus areas
ReasoningGenerative AI
Core specifications
Released
2025-11-13
Context window
400K
Max output
128K
Weights
Closed
Modalities
Input
ImageText
Output
Text
Identity
- Version
- gpt-5.1-codex
- Knowledge cutoff
- 2024-09-30
- Aliases
- GPT-5.1 Codex
Capabilities
AttachmentsReasoningStructuredTool call
Capabilities and fit
Model summary
Codex GPT for repository edits, code review, and practical software agents
Text
AttachmentsReasoningStructuredTool call
- Output
- Text
- Capabilities
- 4
- Catalog updated
- 2026-08-06T01:13:03.028Z
- Status
- Retired
Provider coverage
| Provider | Input | Output | Pricing |
|---|---|---|---|
| Poe | Pricing unavailable | ||
| Vivgrid | Pricing unavailable | ||
| NanoGPT | Pricing unavailable | ||
| LLM Gateway | Pricing unavailable | ||
| OpenCode Zen | Pricing unavailable | ||
| Helicone | Pricing unavailable | ||
| ZenMux | Pricing unavailable | ||
| Abacus | Pricing unavailable | ||
| Azure Cognitive Services | Pricing unavailable | ||
| Azure | Pricing unavailable | ||
| AIHubMix | Pricing unavailable | ||
| OrcaRouter | Pricing unavailable | ||
| Requesty | Pricing unavailable | ||
| Kilo Gateway | Pricing unavailable | ||
| Vercel AI Gateway | Pricing unavailable | ||
| OpenRouter | Pricing unavailable | ||
| Cloudflare AI Gateway | Pricing unavailable | ||
| Jiekou.AI | Pricing unavailable | ||
| OpenAI GPT-5.1 Codex | Pricing unavailable |