Key Takeaways
Gemini 3 Flash Preview wins:
- Larger context window
- Higher intelligence benchmark
- Better at coding
- Supports vision
Grok 3 Mini wins:
- Cheaper input tokens
- Cheaper output tokens
- Faster response time
- Better at math
Price Advantage
Grok 3 Mini
Benchmark Advantage
Gemini 3 Flash Preview
Context Window
Gemini 3 Flash Preview
Speed
Grok 3 Mini
Pricing Comparison
Price Comparison
| Metric | Gemini 3 Flash Preview | Grok 3 Mini | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.50 | $0.25 | Grok 3 Mini |
| Output (per 1M tokens) | $3.00 | $0.50 | Grok 3 Mini |
| Cache Read (per 1M) | $0.05 | $0.07 | Gemini 3 Flash Preview |
| Cache Write (per 1M) | $0.08 | N/A | Gemini 3 Flash Preview |
Using a 3:1 input/output ratio, Grok 3 Mini is 72% cheaper overall.
Gemini 3 Flash Preview Providers
No provider data available
Grok 3 Mini Providers
No provider data available
Benchmark Comparison
7
Benchmarks Compared
5
Gemini 3 Flash Preview Wins
1
Grok 3 Mini Wins
Benchmark Scores
| Benchmark | Gemini 3 Flash Preview | Grok 3 Mini | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 35.0 | 32.1 | |
Coding Index Code generation & understanding | 37.8 | 25.2 | |
Math Index Mathematical reasoning | 55.7 | 84.7 | |
MMLU Pro Academic knowledge | 88.2 | 82.8 | |
GPQA Graduate-level science | 81.2 | 79.1 | |
LiveCodeBench Competitive programming | 79.7 | 69.6 | |
AIME Competition math | - | 93.3 | - |
Gemini 3 Flash Preview significantly outperforms in coding benchmarks.
Cost vs Quality
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Y-axis:
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Gemini 3 Flash Preview
Other models
Context & Performance
Context Window
Gemini 3 Flash Preview
1,048,576
tokens
Grok 3 Mini
131,072
tokens
Gemini 3 Flash Preview has a 88% larger context window.
Speed Performance
| Metric | Gemini 3 Flash Preview | Grok 3 Mini | Winner |
|---|---|---|---|
| Tokens/second | 175.7 tok/s | 196.6 tok/s | |
| Time to First Token | 0.86s | 0.47s |
Grok 3 Mini responds 12% faster on average.
Capabilities
Feature Comparison
| Feature | Gemini 3 Flash Preview | Grok 3 Mini |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Gemini 3 Flash Preview | Grok 3 Mini |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Xai | |
| Released | Dec 2025 | Jun 2025 |
Gemini 3 Flash Preview Modalities
Input
textimagefileaudiovideo
Output
text
Grok 3 Mini Modalities
Input
text
Output
text