Head to head

GPT-5.5 Cyber vs GPT-5.4

On a blended workload of one million input tokens and three million output tokens, GPT-5.4 is 5.0× cheaper than GPT-5.5 Cyber.

GPT-5.5 CyberGPT-5.4
Provider OpenAI OpenAI
Input / MTok $12.5 $2.5
Output / MTok $75 $15
Cache read / MTok $1.25 $0.25
Context window
Blended 1M in + 3M out $237.50 $47.50
Status ga ga

GPT-5.5 Cyber detail   GPT-5.4 detail