All Models
GPT 5.1 Codex
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
Available Providers (17)
| Provider | Model ID | Input Cost | Output Cost | Context | Max Output | Docs |
|---|---|---|---|---|---|---|
 GitHub Copilot | gpt-5.1-codex | $0.00/MTok | $0.00/MTok | 400K | 128K | |
 OpenCode Zen | gpt-5.1-codex | $1.07/MTok | $8.50/MTok | 400K | 128K | |
 Poe | openai/gpt-5.1-codex | $1.10/MTok | $9.00/MTok | 400K | 128K | |
 Jiekou.AI | gpt-5.1-codex | $1.13/MTok | $9.00/MTok | 400K | 128K | |
 NanoGPT | openai/gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 Abacus | gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 OpenRouter | openai/gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 ZenMux | openai/gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 64K | |
 Vivgrid | gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 Cloudflare AI Gateway | openai/gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 AIHubMix | gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 Azure Cognitive Services | gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 OpenAI | gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 Requesty | openai/gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 Vercel AI Gateway | openai/gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 LLM Gateway | gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 272K | |
 Azure | gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K |
Capabilities
Reasoning
Tool Calling
Attachments
Open Weights
Structured Output