openai
OpenAI: GPT-5.1 Chat
GPT-5.1 Chat (AKA Instant is the fast, lightweight member of the 5.1 family, optimized for low-latency chat while retaining strong general intelligence. It uses adaptive reasoning to selectively “think” on...
Input Cost
$1.25
per 1M tokens
Output Cost
$10.00
per 1M tokens
Context Window
128,000
tokens
Developer ID: openai/gpt-5.1-chat
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