GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
Rank
#113
Up 16% week over week
Tokens
55.0B
2026-10-24
Requests
4.1M
4,127,816
Tool calls
-
Input / M
$5.00
Output / M
$30
Cache / M
$0.50
Context
1.1M
1,050,000 tokens