Agentic Chat (GPT-5.1)
duo-chat-gpt-5-1
Chat-tuned GPT model for conversational assistance, writing, and tool workflows
Specification
most-agreed values
Context
400K
Max output
128K
Released
2026-01-22
Knowledge cutoff
2024-09-30
Retires
—
Open weights
no
Input
text, image
Output
text
Price
US dollars per million tokens · most-agreed
Input
free
Output
free
Available from 1 host
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| gitlab | free | free | — | — | 400K | 128K | — |