Claude 3 Haiku vs Gemini 2.5 Flash Preview

Compare Claude 3 Haiku by Anthropic against Gemini 2.5 Flash Preview by Google AI, in 1 community votes, claude 3 haiku wins 100% of head-to-head duels, context windows of 200K vs 1.0M, tested across 26 shared challenges. Updated April 2026.

Which is better, Claude 3 Haiku or Gemini 2.5 Flash Preview?

Claude 3 Haiku is the better choice overall, winning 100% of 1 blind community votes on Rival. Claude 3 Haiku costs $0.25/M input tokens vs $0.15/M for Gemini 2.5 Flash Preview. Context windows: 200K vs 1049K tokens. Compare their real outputs side by side below.

Key Differences Between Claude 3 Haiku and Gemini 2.5 Flash Preview

Claude 3 Haiku is made by anthropic while Gemini 2.5 Flash Preview is from google. Claude 3 Haiku has a 200K token context window compared to Gemini 2.5 Flash Preview's 1049K. On pricing, Claude 3 Haiku costs $0.25/M input tokens vs $0.15/M for Gemini 2.5 Flash Preview. In community voting, In 1 community votes, Claude 3 Haiku wins 100% of head-to-head duels.

In 1 community votes, Claude 3 Haiku wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.

Our Verdict
Claude 3 Haiku
Claude 3 HaikuWinner
Gemini 2.5 Flash Preview
Gemini 2.5 Flash PreviewRunner-up

Pick Claude 3 Haiku. In 1 blind votes, Claude 3 Haiku wins 100% of the time. That's not luck.

Clear winner
Writing DNA

Style Comparison

Similarity
75%

Gemini 2.5 Flash Preview uses 8.8x more headings

Claude 3 Haiku
Gemini 2.5 Flash Preview
50%Vocabulary51%
22wSentence Length15w
0.71Hedging0.70
0.3Bold4.1
5.9Lists3.3
0.00Emoji0.00
0.00Headings0.09
0.08Transitions0.24
Based on 13 + 12 text responses
vs

Ask them anything yourself

Claude 3 HaikuGemini 2.5 Flash Preview

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
FAQ

Common questions