AI model · OpenAI
GPT-5.1-Codex-Mini
Model ID: openai/gpt-5.1-codex-mini
- Input
- $0.25 per 1M tokens
- Output
- $2 per 1M tokens
- Context
- 400K tokens at once
- Max output
- 128K tokens per reply
- Released
- 13 Nov 2025 OpenAI
What it can do
- YesReasoning
- YesTool calling
- YesImage input
- NoOpen weights
- NoFree to use
Takes image, text; gives text.
How its listing describes it
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
Sources
- OpenAI: GPT-5.1-Codex-Mini on OpenRouter — read 2 Oct 2026