Head to head

GPT-4o vs Claude Sonnet 5

On a blended workload of one million input tokens and three million output tokens, Claude Sonnet 5 is line-ball with GPT-4o.

GPT-4oClaude Sonnet 5
Provider OpenAI Anthropic
Input / MTok $2.5 $2
Output / MTok $10 $10
Cache read / MTok $1.25 $0.2
Context window 128,000 1,000,000
Blended 1M in + 3M out $32.50 $32.00
Status ga ga

GPT-4o detail   Claude Sonnet 5 detail