Key Takeaways
Claude Sonnet 4.6 wins:
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Has reasoning mode
- Supports tool calls
Gemini 3.1 Pro Preview wins:
- Cheaper input tokens
- Cheaper output tokens
- Larger context window
Price Advantage
Gemini 3.1 Pro Preview
Benchmark Advantage
Claude Sonnet 4.6
Context Window
Gemini 3.1 Pro Preview
Speed
Claude Sonnet 4.6
Pricing Comparison
Price Comparison
| Metric | Claude Sonnet 4.6 | Gemini 3.1 Pro Preview | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $3.00 | $2.00 | Gemini 3.1 Pro Preview |
| Output (per 1M tokens) | $15.00 | $12.00 | Gemini 3.1 Pro Preview |
| Cache Read (per 1M) | $300000.00 | $200000.00 | Gemini 3.1 Pro Preview |
| Cache Write (per 1M) | $3750000.00 | $375000.00 | Gemini 3.1 Pro Preview |
Using a 3:1 input/output ratio, Gemini 3.1 Pro Preview is 25% cheaper overall.
Claude Sonnet 4.6 Providers
Amazon Bedrock $3.00 (Cheapest)
Google $3.00 (Cheapest)
Anthropic $3.00 (Cheapest)
Gemini 3.1 Pro Preview Providers
Google AI Studio $2.00 (Cheapest)
Google $2.00 (Cheapest)
Benchmark Comparison
3
Benchmarks Compared
0
Claude Sonnet 4.6 Wins
0
Gemini 3.1 Pro Preview Wins
Benchmark Scores
| Benchmark | Claude Sonnet 4.6 | Gemini 3.1 Pro Preview | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 44.3 | - | - |
Coding Index Code generation & understanding | 46.4 | - | - |
GPQA Graduate-level science | 79.9 | - | - |
Claude Sonnet 4.6 significantly outperforms in coding benchmarks.
Cost vs Quality
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Y-axis:
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Other models
Context & Performance
Context Window
Claude Sonnet 4.6
1,000,000
tokens
Max output: 128,000 tokens
Gemini 3.1 Pro Preview
1,048,576
tokens
Max output: 65,536 tokens
Gemini 3.1 Pro Preview has a 5% larger context window.
Speed Performance
| Metric | Claude Sonnet 4.6 | Gemini 3.1 Pro Preview | Winner |
|---|---|---|---|
| Tokens/second | 56.3 tok/s | N/A | |
| Time to First Token | 0.80s | N/A |
Capabilities
Feature Comparison
| Feature | Claude Sonnet 4.6 | Gemini 3.1 Pro Preview |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Claude Sonnet 4.6 | Gemini 3.1 Pro Preview |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Anthropic | |
| Released | Feb 2026 | Feb 2026 |
Claude Sonnet 4.6 Modalities
Input
textimage
Output
text
Gemini 3.1 Pro Preview Modalities
Input
audiofileimagetextvideo
Output
text