OpenAI: GPT-5.1 Chat
128K context$1.25/M input$10.00/M output
openai/gpt-5.1-chatDescription
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...
Quick Start
curl https://router.tangle.tools/v1/chat/completions \
-H "Authorization: Bearer $TANGLE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai/gpt-5.1-chat",
"messages": [{"role": "user", "content": "Hello!"}]
}'Modalities
Input: FileInput: ImageInput: TextOutput: Text
Pricing
Input$1.25/M
Output$10.00/M
Context128K tokens
Model Info
Provideropenai
IDopenai/gpt-5.1-chat