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 Custom Tools wins:
- Cheaper input tokens
- Cheaper output tokens
- Larger context window
Price Advantage
Gemini 3.1 Pro Preview Custom Tools
Benchmark Advantage
Claude Sonnet 4.6
Context Window
Gemini 3.1 Pro Preview Custom Tools
Speed
Claude Sonnet 4.6
Pricing Comparison
Price Comparison
| Metric | Claude Sonnet 4.6 | Gemini 3.1 Pro Preview Custom Tools | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $3.00 | $2.00 | Gemini 3.1 Pro Preview Custom Tools |
| Output (per 1M tokens) | $15.00 | $12.00 | Gemini 3.1 Pro Preview Custom Tools |
| Cache Read (per 1M) | $0.30 | $0.20 | Gemini 3.1 Pro Preview Custom Tools |
| Cache Write (per 1M) | $3.75 | $0.38 | Gemini 3.1 Pro Preview Custom Tools |
Using a 3:1 input/output ratio, Gemini 3.1 Pro Preview Custom Tools 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 Custom Tools Providers
Google AI Studio $2.00 (Cheapest)
Benchmark Comparison
3
Benchmarks Compared
0
Claude Sonnet 4.6 Wins
0
Gemini 3.1 Pro Preview Custom Tools Wins
Benchmark Scores
| Benchmark | Claude Sonnet 4.6 | Gemini 3.1 Pro Preview Custom Tools | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 44.4 | - | - |
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
X-axis:
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 Custom Tools
1,048,576
tokens
Max output: 65,536 tokens
Gemini 3.1 Pro Preview Custom Tools has a 5% larger context window.
Speed Performance
| Metric | Claude Sonnet 4.6 | Gemini 3.1 Pro Preview Custom Tools | Winner |
|---|---|---|---|
| Tokens/second | 55.6 tok/s | N/A | |
| Time to First Token | 0.82s | N/A |
Capabilities
Feature Comparison
| Feature | Claude Sonnet 4.6 | Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|
| 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 Custom Tools |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Anthropic | |
| Released | Feb 2026 | Feb 2026 |
Claude Sonnet 4.6 Modalities
Input
textimage
Output
text
Gemini 3.1 Pro Preview Custom Tools Modalities
Input
textaudioimagevideofile
Output
text