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
#294
No change
Tokens
327.5M
2026-08-14
Requests
45.5K
45,459
Tool calls
-
Input / M
$2.50
Output / M
$15
Cache / M
$0.25
Context
1.1M
1,050,000 tokens