Head to head

GPT-5.2 Pro vs o3-pro

On a blended workload of one million input tokens and three million output tokens, o3-pro is 2.0× cheaper than GPT-5.2 Pro.

GPT-5.2 Proo3-pro
Provider OpenAI OpenAI
Input / MTok $21 $20
Output / MTok $168 $80
Cache read / MTok
Context window 200,000
Blended 1M in + 3M out $525.00 $260.00
Status ga ga

GPT-5.2 Pro detail   o3-pro detail