Gemini Pro 1.0 vs Claude Opus 4

Compare Gemini Pro 1.0 by Google AI against Claude Opus 4 by Anthropic, context windows of 33K vs 200K, tested across 14 shared challenges. Updated April 2026.

Which is better, Gemini Pro 1.0 or Claude Opus 4?

Gemini Pro 1.0 and Claude Opus 4 are both competitive models. Gemini Pro 1.0 costs $0.5/M input tokens vs $15/M for Claude Opus 4. Context windows: 33K vs 200K tokens. Compare their real outputs side by side below.

Key Differences Between Gemini Pro 1.0 and Claude Opus 4

Gemini Pro 1.0 is made by google while Claude Opus 4 is from anthropic. Gemini Pro 1.0 has a 33K token context window compared to Claude Opus 4's 200K. On pricing, Gemini Pro 1.0 costs $0.5/M input tokens vs $15/M for Claude Opus 4.

Our Verdict
Claude Opus 4
Claude Opus 4
Gemini Pro 1.0
Gemini Pro 1.0Runner-up

No community votes yet. On paper, Claude Opus 4 has the edge — bigger model tier, newer, bigger context window.

Gemini Pro 1.0 is 50x cheaper per token — worth considering if cost matters.

Slight edge
Writing DNA

Style Comparison

Similarity
84%

Claude Opus 4 uses 11.2x more emoji

Gemini Pro 1.0
Claude Opus 4
61%Vocabulary64%
13wSentence Length62w
0.41Hedging0.52
5.3Bold4.4
5.4Lists9.1
0.00Emoji0.11
0.46Headings1.87
0.38Transitions0.27
Based on 13 + 16 text responses
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Ask them anything yourself

Gemini Pro 1.0Claude Opus 4

Some models write identically. You are paying for the brand.

178 models fingerprinted across 32 writing dimensions. Free research.

Model Similarity Index

185x

price gap between models that write identically

178

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12

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32

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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
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