Key Takeaways
Claude Sonnet 4.6 wins:
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Supports vision
DeepSeek V3.1 Terminus wins:
- Cheaper input tokens
- Cheaper output tokens
- Better at math
Price Advantage
DeepSeek V3.1 Terminus
Benchmark Advantage
Claude Sonnet 4.6
Context Window
Claude Sonnet 4.6
Speed
Claude Sonnet 4.6
Pricing Comparison
Benchmark Comparison
Context & Performance
Capabilities
Feature Comparison
| Feature | Claude Sonnet 4.6 | DeepSeek V3.1 Terminus |
|---|---|---|
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 | DeepSeek V3.1 Terminus |
|---|---|---|
| License | Proprietary | Open Source |
| Author | Anthropic | Deepseek |
| Released | Feb 2026 | Sep 2025 |
Claude Sonnet 4.6 Modalities
Input
textimage
Output
text
DeepSeek V3.1 Terminus Modalities
Input
text
Output
text