GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...
Rank
#128
Down 8% week over week
Tokens
15.6B
2026-08-14
Requests
2.4M
2,435,534
Tool calls
-
Input / M
$1.25
Output / M
$10
Cache / M
$0.13
Context
400K
400,000 tokens