Gemini 3 Flash PreviewvsMercury 2
Mercury 2 is cheaper than Gemini 3 Flash Preview at $0.25/M vs $0.5/M input tokens.
| Spec | Gemini 3 Flash Preview | Mercury 2 |
|---|---|---|
| Input price | $0.5/M tokens | $0.25/M tokens |
| Output price | $3/M tokens | $0.75/M tokens |
| Context window | 1.0M tokens | 128K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Dec 2025 | Mar 2026 |
Our Verdict
Gemini 3 Flash Preview
Mercury 2Runner-up
Not enough votes to call it. On the specs, Gemini 3 Flash Preview has the edge: bigger model tier, bigger context window, major provider backing.
Mercury 2 costs 4.0x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Gemini 3 Flash Preview
Input
$0.50
Output
$3.00
Mercury 2
Input
$0.25
2.0× cheaper
Output
$0.75
4.0× cheaper
Mercury 2 is cheaper on both: 2.0× input, 4.0× output.
Where to run it
3 hosts
Gemini 3 Flash Preview2 hosts
Mercury 21 host
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
42%
Mercury 2 uses 8.2x more emoji
Gemini 3 Flash Preview
Mercury 2
57%Vocabulary53%
18wSentence Length22w
0.41Hedging0.40
7.4Bold6.6
4.2Lists2.6
0.00Emoji0.08
0.77Headings0.87
0.08Transitions0.14
Based on 28 + 23 text responses
Research
What we learned reading every model
FAQ
Common questions
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