Key Takeaways
DeepSeek V3.1 Terminus wins:
- Cheaper input tokens
- Cheaper output tokens
- Larger context window
- Higher intelligence benchmark
- Better at coding
- Better at math
- Has reasoning mode
Llama 3.1 405B Instruct wins:
- Faster response time
Price Advantage
DeepSeek V3.1 Terminus
Benchmark Advantage
DeepSeek V3.1 Terminus
Context Window
DeepSeek V3.1 Terminus
Speed
Llama 3.1 405B Instruct
Pricing Comparison
Price Comparison
| Metric | DeepSeek V3.1 Terminus | Llama 3.1 405B Instruct | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.21 | $0.90 | DeepSeek V3.1 Terminus |
| Output (per 1M tokens) | $0.79 | $0.90 | DeepSeek V3.1 Terminus |
| Cache Read (per 1M) | $0.12 | $0.45 | DeepSeek V3.1 Terminus |
Using a 3:1 input/output ratio, DeepSeek V3.1 Terminus is 61% cheaper overall.
DeepSeek V3.1 Terminus Providers
No provider data available
Llama 3.1 405B Instruct Providers
No provider data available
Benchmark Comparison
8
Benchmarks Compared
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DeepSeek V3.1 Terminus Wins
0
Llama 3.1 405B Instruct Wins
Benchmark Scores
| Benchmark | DeepSeek V3.1 Terminus | Llama 3.1 405B Instruct | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 28.5 | 17.4 | |
Coding Index Code generation & understanding | 31.9 | 14.5 | |
Math Index Mathematical reasoning | 53.7 | 3.0 | |
MMLU Pro Academic knowledge | 83.6 | 73.2 | |
GPQA Graduate-level science | 75.1 | 51.5 | |
LiveCodeBench Competitive programming | 52.9 | 30.5 | |
Aider Real-world code editing | - | 66.2 | - |
AIME Competition math | - | 21.3 | - |
DeepSeek V3.1 Terminus significantly outperforms in coding benchmarks.
Cost vs Quality
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DeepSeek V3.1 Terminus
Other models
Context & Performance
Context Window
DeepSeek V3.1 Terminus
163,840
tokens
Llama 3.1 405B Instruct
131,000
tokens
DeepSeek V3.1 Terminus has a 20% larger context window.
Speed Performance
| Metric | DeepSeek V3.1 Terminus | Llama 3.1 405B Instruct | Winner |
|---|---|---|---|
| Tokens/second | 0.0 tok/s | 33.7 tok/s | |
| Time to First Token | 0.00s | 0.71s |
Llama 3.1 405B Instruct responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | DeepSeek V3.1 Terminus | Llama 3.1 405B Instruct |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | DeepSeek V3.1 Terminus | Llama 3.1 405B Instruct |
|---|---|---|
| License | Open Source | Open Source |
| Author | Deepseek | Meta-llama |
| Released | Sep 2025 | Jul 2024 |
DeepSeek V3.1 Terminus Modalities
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Output
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Llama 3.1 405B Instruct Modalities
Input
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Output
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