Claude Haiku 4.5 vs OpenAI o4-mini
Compare Claude Haiku 4.5 by Anthropic against OpenAI o4-mini by OpenAI, in 3 community votes, claude haiku 4.5 wins 100% of head-to-head duels, tested across 54 shared challenges. Updated June 2026.
Which is better, Claude Haiku 4.5 or OpenAI o4-mini?
Claude Haiku 4.5 is the better choice overall, winning 100% of 3 blind community votes on Rival. Claude Haiku 4.5 costs $1/M input tokens vs $1.1/M for OpenAI o4-mini. Compare their real outputs side by side below.
Key Differences Between Claude Haiku 4.5 and OpenAI o4-mini
Claude Haiku 4.5 is made by anthropic while OpenAI o4-mini is from openai. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $1.1/M for OpenAI o4-mini. In community voting, In 3 community votes, Claude Haiku 4.5 wins 100% of head-to-head duels.
In 3 community votes, Claude Haiku 4.5 wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 3+ human preference judgments for this pair.
Pick Claude Haiku 4.5. In 3 blind votes, Claude Haiku 4.5 wins 100% of the time. That's not luck.
Cost per 1M tokens
Claude Haiku 4.5 wins input (1.1× cheaper)·OpenAI o4-mini wins output (1.1× cheaper)
Style Comparison
Claude Haiku 4.5 uses 513.9x more bold
