OpenAI: GPT-5.1-Codex-Mini (openai/gpt-5.1-codex-mini) costs $0.25 per 1M prompt tokens and $2 per 1M completion tokens, has a 400,000-token context window, and supports tool calling, structured outputs, reasoning and response format. Data updated 2026-10-30.
- Prompt price
- $0.25 / 1M tokens
- Completion price
- $2 / 1M tokens
- Context
- 400,000 tokens
- Input modalities
- image, text
- Output modalities
- text
- Tokenizer
- GPT
- Instruct type
- —
- Knowledge cutoff
- —
- Hugging Face
- —
Last price change: 2025-11-15
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex