OpenAI Inc.
gpt-5.1-chat
GPT-5.1 Chat points to the GPT-5.1 snapshot currently used in ChatGPT. We recommend GPT-5.1 for most API usage, but feel free to use this GPT-5.1 Chat model to test our latest improvements for chat use cases.
Vision Support
Advanced Reasoning
Caching Support
Pricing
$1.25
Input tokens per million
$10.00
Output tokens per million
Caching Pricing
$10.00
Cache write per million
$0.13
Cache read per million
Technical Specifications
Context Window
128K tokens
Max Output Tokens
16K tokens
Global Availability
Last Updated
N/A