Gemini 3 Flash PreviewvsGPT-5 Mini
GPT-5 Mini is cheaper than Gemini 3 Flash Preview at $0.25/M vs $0.5/M input tokens.
| Spec | Gemini 3 Flash Preview | GPT-5 Mini |
|---|---|---|
| Input price | $0.5/M tokens | $0.25/M tokens |
| Output price | $3/M tokens | $2/M tokens |
| Context window | 1.0M tokens | — |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Dec 2025 | Aug 2025 |
| SWE-bench Verified | 78.0% | ~70% |
Our Verdict
Gemini 3 Flash Preview
GPT-5 MiniRunner-up
Not enough votes to call it. On the specs, Gemini 3 Flash Preview has the edge: bigger model tier, newer, bigger context window.
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
GPT-5 Mini
Input
$0.25
2.0× cheaper
Output
$2.00
1.5× cheaper
GPT-5 Mini is cheaper on both: 2.0× input, 1.5× output.
Where to run it
4 hosts, cheapest first
Gemini 3 Flash Preview2 hosts
Per million tokens. Prices and uptime via OpenRouter, checked 13 Sep 2026.
Writing DNA
Style Comparison
Similarity
40%
Gemini 3 Flash Preview uses 738.5x more bold
Gemini 3 Flash Preview
GPT-5 Mini
57%Vocabulary62%
18wSentence Length22w
0.41Hedging0.21
7.4Bold0.0
4.2Lists3.8
0.00Emoji0.00
0.77Headings0.00
0.08Transitions0.04
Based on 28 + 21 text responses
Research
What we learned reading every model
FAQ
Common questions
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