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GPT-5.1 Chat

Multimodalby OpenAI·Model page

OpenAI's chat-optimized multimodal model with file and image support and a 128K-token context.

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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...

Author
O
OpenAI
Organization · ✓
openai
Details
Downloads
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AccessClosed Source
Context128K tokens
Input price$1.25 /1M
Output price$10 /1M
CreatedNov 13, 2025
Updated
View on Hugging Face
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GPT-5.1 Chat — AI Model Details | Applied