Gemini 2.5 Flash Preview (thinking) vs Gemini 2.5 Pro Preview 06-05

Compare Gemini 2.5 Flash Preview (thinking) and Gemini 2.5 Pro Preview 06-05, both from Google AI, context windows of 1.0M vs 1.0M, tested across 18 shared challenges. Updated April 2026.

Which is better, Gemini 2.5 Flash Preview (thinking) or Gemini 2.5 Pro Preview 06-05?

Gemini 2.5 Flash Preview (thinking) and Gemini 2.5 Pro Preview 06-05 are both competitive models. Gemini 2.5 Flash Preview (thinking) costs $0.175/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05. Context windows: 1049K vs 1049K tokens. Compare their real outputs side by side below.

Key Differences Between Gemini 2.5 Flash Preview (thinking) and Gemini 2.5 Pro Preview 06-05

Gemini 2.5 Flash Preview (thinking) is made by google while Gemini 2.5 Pro Preview 06-05 is from google. Gemini 2.5 Flash Preview (thinking) has a 1049K token context window compared to Gemini 2.5 Pro Preview 06-05's 1049K. On pricing, Gemini 2.5 Flash Preview (thinking) costs $0.175/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05.

Our Verdict
Gemini 2.5 Pro Preview 06-05
Gemini 2.5 Pro Preview 06-05
Gemini 2.5 Flash Preview (thinking)
Gemini 2.5 Flash Preview (thinking)Runner-up

No community votes yet. On paper, Gemini 2.5 Pro Preview 06-05 has the edge — bigger model tier, newer.

Too close to call
Writing DNA

Style Comparison

Similarity
100%

Gemini 2.5 Pro Preview 06-05 uses 98.0x more headings

Gemini 2.5 Flash Preview (thinking)
Gemini 2.5 Pro Preview 06-05
53%Vocabulary51%
14wSentence Length15w
0.38Hedging0.31
4.4Bold4.8
4.1Lists4.1
0.00Emoji0.00
0.00Headings0.98
0.24Transitions0.05
Based on 7 + 20 text responses
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Gemini 2.5 Flash Preview (thinking)Gemini 2.5 Pro Preview 06-05

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