GPT 5.1 Thinking (Fast)
Compact GPT model for low-latency assistance and high-volume workloads
Context
400,000
Max output
128,000
Input / 1M
$2.50
Output / 1M
$20.00
Providers
1
01Profile
Profile
Released
2025-11-12
Last updated
2025-11-12
Knowledge cutoff
—
Weights
Closed
02Capabilities
Capabilities
Input
text · image · pdf
Output
text
Reasoning
Yes
Tool calling
Yes
Structured output
No
Attachments
Yes
Cache read
—
Cache write
—
03Pricing
Pricing across 1 providers
Per 1M tokens, USD. Sorted by input price. First-party row highlighted.
04History
Change history
1+ recent events since 2025-11-12
2026-08-17Addedverceloffering→ new