Gemini 2.5 Flash PreviewvsGemini 3 Pro Preview
Gemini 3 Pro Preview is the newer model, released after Gemini 2.5 Flash Preview.
| Spec | Gemini 2.5 Flash Preview | Gemini 3 Pro Preview |
|---|---|---|
| Input price | $0.15/M tokens | — |
| Output price | $0.6/M tokens | — |
| Context window | 1.0M tokens | — |
| Free API (OpenRouter) | No | No |
| Released | Apr 2025 | Nov 2025 |
| SWE-bench Verified | 60.4% | 76.2% |
Our Verdict
Gemini 3 Pro Preview
Gemini 2.5 Flash PreviewRunner-up
Not enough votes to call it. On the specs, Gemini 3 Pro Preview has the edge: bigger model tier, newer.
Too close to call
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview
Input
$0.15
Output
$0.60
Gemini 3 Pro Preview
Input
—
Output
—
Writing DNA
Style Comparison
Similarity
47%
Gemini 3 Pro Preview uses 10.2x more headings
Gemini 2.5 Flash Preview
Gemini 3 Pro Preview
51%Vocabulary58%
15wSentence Length17w
0.70Hedging0.37
4.1Bold7.7
3.3Lists4.8
0.00Emoji0.00
0.09Headings0.90
0.24Transitions0.25
Based on 12 + 23 text responses
Research
What we learned reading every model
FAQ
Common questions
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