Head to head

GPT-5.4 nano vs GPT-5.2 Pro

On a blended workload of one million input tokens and three million output tokens, GPT-5.4 nano is 132.9× cheaper than GPT-5.2 Pro.

GPT-5.4 nanoGPT-5.2 Pro
Provider OpenAI OpenAI
Input / MTok $0.2 $21
Output / MTok $1.25 $168
Cache read / MTok $0.02
Context window
Blended 1M in + 3M out $3.95 $525.00
Status ga ga

GPT-5.4 nano detail   GPT-5.2 Pro detail