Gemini 3.1 Pro Previewvso1
Gemini 3.1 Pro Preview is cheaper than o1 at $2/M vs $15/M input tokens.
| Spec | Gemini 3.1 Pro Preview | o1 |
|---|---|---|
| Input price | $2/M tokens | $15/M tokens |
| Output price | $12/M tokens | $60/M tokens |
| Context window | 1.0M tokens | 128K tokens |
| Released | Feb 2026 | Dec 2024 |
| SWE-bench Verified | 80.6% | 48.9% |
Our Verdict
Gemini 3.1 Pro Preview
o1Runner-up
Not enough votes to call it. On the specs, Gemini 3.1 Pro Preview has the edge: bigger model tier, newer, bigger context window.
Gemini 3.1 Pro Preview costs 5.0x less per token.
Slight edge
API pricing
Cost per 1M tokens
Gemini 3.1 Pro Preview
Input
$2.00
7.5× cheaper
Output
$12.00
5.0× cheaper
o1
Input
$15.00
Output
$60.00
Gemini 3.1 Pro Preview is cheaper on both — 7.5× input, 5.0× output
Writing DNA
Style Comparison
Similarity
36%
o1 uses 2.8x more transitions
Gemini 3.1 Pro Preview
o1
54%Vocabulary64%
18wSentence Length16w
0.29Hedging0.76
4.9Bold5.0
3.3Lists2.6
0.00Emoji0.00
0.72Headings0.44
0.14Transitions0.40
Based on 23 + 13 text responses
Research
What we learned reading every model
FAQ
