Claude 3 SonnetvsGemini 2.5 Flash Preview 09-2025
Gemini 2.5 Flash Preview 09-2025 is cheaper than Claude 3 Sonnet at $0.3/M vs $3/M input tokens.
| Spec | Claude 3 Sonnet | Gemini 2.5 Flash Preview 09-2025 |
|---|---|---|
| Input price | $3/M tokens | $0.3/M tokens |
| Output price | $15/M tokens | $2.5/M tokens |
| Context window | — | 1.0M tokens |
| Released | Mar 2024 | Sep 2025 |
Our Verdict
Gemini 2.5 Flash Preview 09-2025
Claude 3 SonnetRunner-up
Not enough votes to call it. On the specs, Gemini 2.5 Flash Preview 09-2025 has the edge: bigger model tier, newer, bigger context window.
Gemini 2.5 Flash Preview 09-2025 costs 6.0x less per token.
Too close to call
API pricing
Cost per 1M tokens
Claude 3 Sonnet
Input
$3.00
Output
$15.00
Gemini 2.5 Flash Preview 09-2025
Input
$0.30
10× cheaper
Output
$2.50
6.0× cheaper
Gemini 2.5 Flash Preview 09-2025 is cheaper on both — 10× input, 6.0× output
Writing DNA
Style Comparison
Similarity
47%
Gemini 2.5 Flash Preview 09-2025 uses 584.8x more bold
Claude 3 Sonnet
Gemini 2.5 Flash Preview 09-2025
48%Vocabulary53%
14wSentence Length19w
0.32Hedging0.30
0.0Bold5.8
3.6Lists3.1
0.00Emoji0.14
0.00Headings0.93
0.38Transitions0.22
Based on 4 + 22 text responses
Research
What we learned reading every model
FAQ
Common questions
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