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Claude Haiku 4.5 vs Gemini 2.5 Pro Preview 06-05

Compare Claude Haiku 4.5 by Anthropic against Gemini 2.5 Pro Preview 06-05 by Google AI, in 1 community votes, gemini 2.5 pro preview 06-05 wins 100% of head-to-head duels, context windows of 200K vs 1.0M, tested across 38 shared challenges. Updated April 2026.

Which is better, Claude Haiku 4.5 or Gemini 2.5 Pro Preview 06-05?

Gemini 2.5 Pro Preview 06-05 is the better choice overall, winning 100% of 1 blind community votes on Rival. Claude Haiku 4.5 costs $1/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05. Context windows: 200K vs 1049K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Haiku 4.5 and Gemini 2.5 Pro Preview 06-05

Claude Haiku 4.5 is made by anthropic while Gemini 2.5 Pro Preview 06-05 is from google. Claude Haiku 4.5 has a 200K token context window compared to Gemini 2.5 Pro Preview 06-05's 1049K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05. In community voting, In 1 community votes, Gemini 2.5 Pro Preview 06-05 wins 100% of head-to-head duels.

In 1 community votes, Gemini 2.5 Pro Preview 06-05 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
Gemini 2.5 Pro Preview 06-05
Gemini 2.5 Pro Preview 06-05Winner
Claude Haiku 4.5
Claude Haiku 4.5Runner-up

Pick Gemini 2.5 Pro Preview 06-05. In 1 blind votes, Gemini 2.5 Pro Preview 06-05 wins 100% of the time. That's not luck.

Clear winner
Writing DNA

Style Comparison

Similarity
91%

Claude Haiku 4.5 uses 20.4x more emoji

Claude Haiku 4.5
Gemini 2.5 Pro Preview 06-05
61%Vocabulary51%
47wSentence Length15w
0.64Hedging0.31
5.1Bold4.8
6.3Lists4.1
0.20Emoji0.00
2.46Headings0.98
0.17Transitions0.05
Based on 24 + 20 text responses
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Claude Haiku 4.5Gemini 2.5 Pro Preview 06-05

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
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