GPT-5.1-codex-mini
gpt-5.1-codex-mini
OpenAI · chat · api · seen 9m ago
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Context
400K
Max output
100K
Input $/1M
$0.25
Output $/1M
$2.00
Modalities
text
Released
13 Nov 2025
AI summary
● machine-written
OpenAI releases GPT-5.1-Codex-Mini for coding and professional work
GPT-5.1-Codex-Mini is a smaller, faster variant of GPT-5 designed for coding and professional tasks. The model is available via API with a 400,000 token context window and supports up to 100,000 tokens of output. It launched on November 13, 2025 and is positioned as a more affordable alternative to larger models.
What's new
- Released November 13, 2025
- 400,000 token context window
- Maximum output of 100,000 tokens
- Lower pricing than standard GPT-5 models
Best for
Coding tasksProfessional workCost-sensitive applications requiring fast inference