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OpenAI: GPT-5.1-Codex
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....
specs & pricing
- Type
- text
- Provider
- openai
- Model ID
- openai/gpt-5.1-codex
- Capabilities
- vision, tools, reasoning
- Context window
- 400K tokens
- Input price
- $1.38 / 1M tokens
- Output price
- $11.00 / 1M tokens
Cloud price is billed from prepaid credits when a request fails over to the cloud. Open-weight models run free on GPUs you own — the gateway routes to your nodes first.