All Models

GPT-5.1 Chat

gpt-codex Reasoning Tool Calling Attachments Structured Output

Chat-tuned GPT-5.1 for polished assistants, writing, and product conversations

Providers 2
Released Nov 13, 2025
Input Modalities text, image, pdf
Output Modalities text
Tarsk Use coding

Available Providers (2)

Provider Model ID Input Cost Output Cost Context Max Output Docs
OrcaRouter openai/gpt-5.1-chat-latest $1.25/MTok $10/MTok 128K 16.4K
ZenMux openai/gpt-5.1-chat $1.25/MTok $10/MTok 128K 64K

Capabilities

Reasoning
Tool Calling
Attachments
Open Weights
Structured Output