Claude Sonnet 4.6 vs Gemini 2.5 Pro Experimental

Compare Claude Sonnet 4.6 by Anthropic against Gemini 2.5 Pro Experimental by Google AI, context windows of 1.0M vs 1.0M, tested across 42 shared challenges. Updated April 2026.

Which is better, Claude Sonnet 4.6 or Gemini 2.5 Pro Experimental?

Claude Sonnet 4.6 and Gemini 2.5 Pro Experimental are both competitive models. Claude Sonnet 4.6 costs $3/M input tokens vs $1/M for Gemini 2.5 Pro Experimental. Context windows: 1000K vs 1000K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Sonnet 4.6 and Gemini 2.5 Pro Experimental

Claude Sonnet 4.6 is made by anthropic while Gemini 2.5 Pro Experimental is from google. Claude Sonnet 4.6 has a 1000K token context window compared to Gemini 2.5 Pro Experimental's 1000K. On pricing, Claude Sonnet 4.6 costs $3/M input tokens vs $1/M for Gemini 2.5 Pro Experimental.

Our Verdict
Claude Sonnet 4.6
Claude Sonnet 4.6
Gemini 2.5 Pro Experimental
Gemini 2.5 Pro Experimental

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Gemini 2.5 Pro Experimental is 7.5x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
88%

Claude Sonnet 4.6 uses 19.1x more emoji

Claude Sonnet 4.6
Gemini 2.5 Pro Experimental
56%Vocabulary54%
36wSentence Length15w
0.53Hedging0.35
5.1Bold5.6
3.4Lists3.9
0.19Emoji0.00
2.10Headings0.39
0.02Transitions0.17
Based on 23 + 18 text responses
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Claude Sonnet 4.6Gemini 2.5 Pro Experimental

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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