Key Takeaways
DeepSeek V3.1 wins:
- Larger context window
- Better at coding
- Better at math
- Supports tool calls
Qwen3.5 9B wins:
- Cheaper input tokens
- Cheaper output tokens
- Higher intelligence benchmark
Price Advantage
Qwen3.5 9B
Benchmark Advantage
DeepSeek V3.1
Context Window
DeepSeek V3.1
Speed
N/A
Pricing Comparison
Price Comparison
| Metric | DeepSeek V3.1 | Qwen3.5 9B | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.15 | $0.10 | Qwen3.5 9B |
| Output (per 1M tokens) | $0.75 | $0.15 | Qwen3.5 9B |
| Cache Read (per 1M) | $0.10 | N/A | DeepSeek V3.1 |
Using a 3:1 input/output ratio, Qwen3.5 9B is 62% cheaper overall.
DeepSeek V3.1 Providers
No provider data available
Qwen3.5 9B Providers
No provider data available
Benchmark Comparison
6
Benchmarks Compared
1
DeepSeek V3.1 Wins
2
Qwen3.5 9B Wins
Benchmark Scores
| Benchmark | DeepSeek V3.1 | Qwen3.5 9B | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 28.1 | 32.4 | |
Coding Index Code generation & understanding | 28.4 | 25.3 | |
Math Index Mathematical reasoning | 49.7 | - | - |
MMLU Pro Academic knowledge | 83.3 | - | - |
GPQA Graduate-level science | 73.5 | 80.6 | |
LiveCodeBench Competitive programming | 57.7 | - | - |
DeepSeek V3.1 shows stronger mathematical reasoning abilities.
Cost vs Quality
X-axis:
Y-axis:
Loading chart...
DeepSeek V3.1
Other models
Context & Performance
Context Window
DeepSeek V3.1
32,768
tokens
Qwen3.5 9B
N/A
tokens
Speed Performance
| Metric | DeepSeek V3.1 | Qwen3.5 9B | Winner |
|---|---|---|---|
| Tokens/second | 0.0 tok/s | 0.0 tok/s | |
| Time to First Token | 0.00s | 0.00s |
Capabilities
Feature Comparison
| Feature | DeepSeek V3.1 | Qwen3.5 9B |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | DeepSeek V3.1 | Qwen3.5 9B |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Deepseek | Qwen |
| Released | Aug 2025 | Unknown |
DeepSeek V3.1 Modalities
Input
text
Output
text
Qwen3.5 9B Modalities
Input
Output