Key Takeaways
Claude Opus 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 Opus 4.6
Context Window
Claude Opus 4.6
Speed
Claude Opus 4.6
Pricing Comparison
Price Comparison
| Metric | Claude Opus 4.6 | DeepSeek V3.1 Terminus | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $5.00 | $0.21 | DeepSeek V3.1 Terminus |
| Output (per 1M tokens) | $25.00 | $0.79 | DeepSeek V3.1 Terminus |
| Cache Read (per 1M) | $0.50 | $0.12 | DeepSeek V3.1 Terminus |
| Cache Write (per 1M) | $6.25 | N/A | Claude Opus 4.6 |
Using a 3:1 input/output ratio, DeepSeek V3.1 Terminus is 96% cheaper overall.
Claude Opus 4.6 Providers
No provider data available
DeepSeek V3.1 Terminus Providers
No provider data available
Benchmark Comparison
6
Benchmarks Compared
3
Claude Opus 4.6 Wins
0
DeepSeek V3.1 Terminus Wins
Benchmark Scores
| Benchmark | Claude Opus 4.6 | DeepSeek V3.1 Terminus | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 46.5 | 28.5 | |
Coding Index Code generation & understanding | 47.6 | 31.9 | |
Math Index Mathematical reasoning | - | 53.7 | - |
MMLU Pro Academic knowledge | - | 83.6 | - |
GPQA Graduate-level science | 84.0 | 75.1 | |
LiveCodeBench Competitive programming | - | 52.9 | - |
Claude Opus 4.6 significantly outperforms in coding benchmarks.
Cost vs Quality
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Other models
Context & Performance
Context Window
Claude Opus 4.6
1,000,000
tokens
DeepSeek V3.1 Terminus
163,840
tokens
Claude Opus 4.6 has a 84% larger context window.
Speed Performance
| Metric | Claude Opus 4.6 | DeepSeek V3.1 Terminus | Winner |
|---|---|---|---|
| Tokens/second | 48.1 tok/s | 0.0 tok/s | |
| Time to First Token | 1.68s | 0.00s |
Claude Opus 4.6 responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | Claude Opus 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 Opus 4.6 | DeepSeek V3.1 Terminus |
|---|---|---|
| License | Proprietary | Open Source |
| Author | Anthropic | Deepseek |
| Released | Feb 2026 | Sep 2025 |
Claude Opus 4.6 Modalities
Input
textimage
Output
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DeepSeek V3.1 Terminus Modalities
Input
text
Output
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