Head to head

Claude Opus 4 vs o1

On a blended workload of one million input tokens and three million output tokens, o1 is 1.2× cheaper than Claude Opus 4.

Claude Opus 4o1
Provider Anthropic OpenAI
Input / MTok $15 $15
Output / MTok $75 $60
Cache read / MTok $1.5 $7.5
Context window 200,000 200,000
Blended 1M in + 3M out $240.00 $195.00
Status retired ga

Claude Opus 4 detail   o1 detail