GPT 5.5 Pro
LatestOpenAI
•
Proprietary# 2
Released
Apr 23, 2026
# 1
Knowledge Cutoff
Dec 25
# 3
Context Length
1M
Benchmarks
# 147
Code RankedAGI
15.5%
# 6
Agentic RankedAGI
74.7%
# 1
Browse Comp
90.1%
# 25
RAGI Overall
61.4%
Pricing
# 45
Input Cost /M
$30
# 53
Output Cost /M
$180