GPT-5.1 (2025-11-13)
GPT model for general reasoning, writing, coding, and tool-assisted tasks
Context
400,000
Max output
128,000
Input / 1M
$1.25
Output / 1M
$10.00
Providers
1
01Profile
Profile
Released
2024-01-01
Last updated
2025-11-13
Knowledge cutoff
—
Weights
Closed
02Capabilities
Capabilities
Input
text
Output
text
Reasoning
Yes
Tool calling
Yes
Structured output
Yes
Attachments
No
Cache read
—
Cache write
—
03Pricing
Pricing across 1 providers
Per 1M tokens, USD. Sorted by input price. First-party row highlighted.
04History
Change history
3+ recent events since 2024-01-01
2026-09-06Contextnano-gptContext window1,000,000→ 400,000
2026-09-06Contextnano-gptMax output32,768→ 128,000
2026-02-17Addednano-gptoffering→ new