GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
OpenAI: GPT-5.1-Codex-Mini — OpenAI. Context window 400,000 tokens. API pricing (per 1M tokens): Input $0.25, Output $2. License: Proprietary.
| Provider | OpenAI |
|---|---|
| API model ID | openai/gpt-5.1-codex-mini |
| Tier | Frontier |
| Context window | 400,000 tokens |
| Max output | 128,000 tokens |
| License | Proprietary |
| API pricing (per 1M tokens) · Input | $0.25 |
| API pricing (per 1M tokens) · Output | $2 |