Head to head

Claude Haiku 4.5 vs o3-mini

On a blended workload of one million input tokens and three million output tokens, o3-mini is 1.1× cheaper than Claude Haiku 4.5.

Claude Haiku 4.5o3-mini
Provider Anthropic OpenAI
Input / MTok $1 $1.1
Output / MTok $5 $4.4
Cache read / MTok $0.1 $0.55
Context window 200,000 200,000
Blended 1M in + 3M out $16.00 $14.30
Status ga ga

Claude Haiku 4.5 detail   o3-mini detail