Head to head

GPT-5.5 vs GPT-5.5 Pro

On a blended workload of one million input tokens and three million output tokens, GPT-5.5 is 6.0× cheaper than GPT-5.5 Pro.

GPT-5.5GPT-5.5 Pro
Provider OpenAI OpenAI
Input / MTok $5 $30
Output / MTok $30 $180
Cache read / MTok $0.5
Context window
Blended 1M in + 3M out $95.00 $570.00
Status ga ga

GPT-5.5 detail   GPT-5.5 Pro detail