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OpenAI: 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 (2)
| Provider | Model ID | Input Cost | Output Cost | Context | Max Output | Docs |
|---|---|---|---|---|---|---|
 Kilo Gateway | openai/gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K | |
 Helicone | gpt-5.1-codex | $1.25/MTok | $10.00/MTok | 400K | 128K |
Capabilities
Reasoning
Tool Calling
Attachments
Open Weights
Structured Output