Key Takeaways
Qwen 1.5 72B Chat wins:
- No clear advantages in compared metrics
Qwen3.5 397B A17B wins:
- Cheaper input tokens
- Larger context window
- Faster response time
- Higher intelligence benchmark
- Better at coding
- Supports vision
Price Advantage
Qwen3.5 397B A17B
Benchmark Advantage
Qwen3.5 397B A17B
Context Window
Qwen3.5 397B A17B
Speed
Qwen3.5 397B A17B
Pricing Comparison
Price Comparison
| Metric | Qwen 1.5 72B Chat | Qwen3.5 397B A17B | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.90 | $0.39 | Qwen3.5 397B A17B |
| Output (per 1M tokens) | $0.90 | $0.90 | Tie |
| Cache Read (per 1M) | $0.45 | $0.45 | Tie |
Using a 3:1 input/output ratio, Qwen3.5 397B A17B is 43% cheaper overall.
Qwen 1.5 72B Chat Providers
No provider data available
Qwen3.5 397B A17B Providers
No provider data available
Benchmark Comparison
3
Benchmarks Compared
0
Qwen 1.5 72B Chat Wins
0
Qwen3.5 397B A17B Wins
Benchmark Scores
| Benchmark | Qwen 1.5 72B Chat | Qwen3.5 397B A17B | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | - | 40.1 | - |
Coding Index Code generation & understanding | - | 37.4 | - |
GPQA Graduate-level science | - | 86.1 | - |
Qwen3.5 397B A17B significantly outperforms in coding benchmarks.
Cost vs Quality
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Y-axis:
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Other models
Context & Performance
Context Window
Qwen 1.5 72B Chat
N/A
tokens
Qwen3.5 397B A17B
262,144
tokens
Speed Performance
| Metric | Qwen 1.5 72B Chat | Qwen3.5 397B A17B | Winner |
|---|---|---|---|
| Tokens/second | N/A | 52.2 tok/s | |
| Time to First Token | N/A | 1.66s |
Capabilities
Feature Comparison
| Feature | Qwen 1.5 72B Chat | Qwen3.5 397B A17B |
|---|---|---|
| Vision (Image Input) | ||
| Tool/Function Calls | ||
| Reasoning Mode | ||
| Audio Input | ||
| Audio Output | ||
| PDF Input | ||
| Prompt Caching | ||
| Web Search |
License & Release
| Property | Qwen 1.5 72B Chat | Qwen3.5 397B A17B |
|---|---|---|
| License | Proprietary | Proprietary |
| Author | Qwen | Qwen |
| Released | Unknown | Feb 2026 |
Qwen 1.5 72B Chat Modalities
Input
Output
Qwen3.5 397B A17B Modalities
Input
textimagevideo
Output
text