Head to head

GPT-5 vs GPT-5 nano

On a blended workload of one million input tokens and three million output tokens, GPT-5 nano is 25.0× cheaper than GPT-5.

GPT-5GPT-5 nano
Provider OpenAI OpenAI
Input / MTok $1.25 $0.05
Output / MTok $10 $0.4
Cache read / MTok $0.125 $0.005
Context window
Blended 1M in + 3M out $31.25 $1.25
Status ga ga

GPT-5 detail   GPT-5 nano detail