OpenAI
GPT-5.1
gpt
Model ID gpt-5.1
Provider OpenAI
Family gpt
Status -
Knowledge Cutoff 2024-09-30
Release Date 2025-11-13
Input Modalities text, image
Output Modalities text
Context Window 400000
Input Limit 272000
Output Limit 128000
Tool Calling Yes
Reasoning Yes
Structured Output Yes
Temperature Control No
Open Weights No
Input Cost / 1M tokens $1.25
Output Cost / 1M tokens $10.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens $0.13
Cache Write Cost / 1M tokens -