Gemini 1.5 Pro
No, 9.11 is less than 9.9. Think of it like this: 9.9 is the same as 9.90. 9.90 is larger than 9.11.
Gemini 1.5 Pro vs Gemini 2.5 Flash Preview 05-20 (thinking)
Compare Gemini 1.5 Pro and Gemini 2.5 Flash Preview 05-20 (thinking), both from Google AI, context windows of 1.0M vs 1.0M, tested across 2 shared challenges. Updated April 2026.
Which is better, Gemini 1.5 Pro or Gemini 2.5 Flash Preview 05-20 (thinking)?
Gemini 1.5 Pro and Gemini 2.5 Flash Preview 05-20 (thinking) are both competitive models. Gemini 1.5 Pro costs $3.5/M input tokens vs $0.15/M for Gemini 2.5 Flash Preview 05-20 (thinking). Context windows: 1000K vs 1049K tokens. Compare their real outputs side by side below.
Key Differences Between Gemini 1.5 Pro and Gemini 2.5 Flash Preview 05-20 (thinking)
Gemini 1.5 Pro is made by google while Gemini 2.5 Flash Preview 05-20 (thinking) is from google. Gemini 1.5 Pro has a 1000K token context window compared to Gemini 2.5 Flash Preview 05-20 (thinking)'s 1049K. On pricing, Gemini 1.5 Pro costs $3.5/M input tokens vs $0.15/M for Gemini 2.5 Flash Preview 05-20 (thinking).
Our Verdict
Gemini 1.5 Pro
Gemini 2.5 Flash Preview 05-20 (thinking)
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 Flash Preview 05-20 (thinking) is 3.0x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
99%
Gemini 1.5 Pro uses 79.5x more hedging
Gemini 1.5 Pro
Gemini 2.5 Flash Preview 05-20 (thinking)
61%Vocabulary70%
15wSentence Length11w
0.80Hedging0.00
3.7Bold4.2
3.3Lists7.3
0.00Emoji0.00
0.08Headings0.00
0.09Transitions0.00
Based on 8 + 3 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
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