Key Takeaways
DeepSeek V3.1 Terminus wins:
- Cheaper output tokens
- Better at coding
- Better at math
Grok Code Fast 1 wins:
- Cheaper input tokens
- Larger context window
- Faster response time
- Higher intelligence benchmark
Price Advantage
DeepSeek V3.1 Terminus
Benchmark Advantage
DeepSeek V3.1 Terminus
Context Window
Grok Code Fast 1
Speed
Grok Code Fast 1
Pricing Comparison
Price Comparison
| Metric | DeepSeek V3.1 Terminus | Grok Code Fast 1 | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.21 | $0.20 | Grok Code Fast 1 |
| Output (per 1M tokens) | $0.79 | $1.50 | DeepSeek V3.1 Terminus |
| Cache Read (per 1M) | $0.12 | $0.02 | Grok Code Fast 1 |
Using a 3:1 input/output ratio, DeepSeek V3.1 Terminus is 32% cheaper overall.
DeepSeek V3.1 Terminus Providers
No provider data available
Grok Code Fast 1 Providers
No provider data available
Benchmark Comparison
6
Benchmarks Compared
4
DeepSeek V3.1 Terminus Wins
1
Grok Code Fast 1 Wins
Benchmark Scores
| Benchmark | DeepSeek V3.1 Terminus | Grok Code Fast 1 | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 28.5 | 28.7 | - |
Coding Index Code generation & understanding | 31.9 | 23.7 | |
Math Index Mathematical reasoning | 53.7 | 43.3 | |
MMLU Pro Academic knowledge | 83.6 | 79.3 | |
GPQA Graduate-level science | 75.1 | 72.7 | |
LiveCodeBench Competitive programming | 52.9 | 65.7 |
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
Grok Code Fast 1
256,000
tokens
Grok Code Fast 1 has a 36% larger context window.
Speed Performance
| Metric | DeepSeek V3.1 Terminus | Grok Code Fast 1 | Winner |
|---|---|---|---|
| Tokens/second | 0.0 tok/s | 171.7 tok/s | |
| Time to First Token | 0.00s | 3.27s |
Grok Code Fast 1 responds Infinity% faster on average.
Capabilities
Feature Comparison
| Feature | DeepSeek V3.1 Terminus | Grok Code Fast 1 |
|---|---|---|
| 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 | Grok Code Fast 1 |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Deepseek | Xai |
| Released | Sep 2025 | Aug 2025 |
DeepSeek V3.1 Terminus Modalities
Input
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Output
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Grok Code Fast 1 Modalities
Input
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Output
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