Key Takeaways
Qwen2.5 7B Instruct wins:
- Cheaper input tokens
- Cheaper output tokens
- Higher intelligence benchmark
- Supports tool calls
Qwen3.5 397B A17B wins:
- Larger context window
- Supports vision
Price Advantage
Qwen2.5 7B Instruct
Benchmark Advantage
Qwen2.5 7B Instruct
Context Window
Qwen3.5 397B A17B
Speed
N/A
Pricing Comparison
Price Comparison
| Metric | Qwen2.5 7B Instruct | Qwen3.5 397B A17B | Winner |
|---|---|---|---|
| Input (per 1M tokens) | $0.04 | $0.39 | Qwen2.5 7B Instruct |
| Output (per 1M tokens) | $0.10 | $2.34 | Qwen2.5 7B Instruct |
Using a 3:1 input/output ratio, Qwen2.5 7B Instruct is 94% cheaper overall.
Qwen2.5 7B Instruct Providers
Phala $0.04 (Cheapest)
AtlasCloud $0.04 (Cheapest)
Fireworks $0.20
Together $0.30
Qwen3.5 397B A17B Providers
Alibaba $0.39 (Cheapest)
AtlasCloud $0.55
Parasail $0.60
Together $0.60
Novita $0.60
Benchmark Comparison
4
Benchmarks Compared
0
Qwen2.5 7B Instruct Wins
0
Qwen3.5 397B A17B Wins
Benchmark Scores
| Benchmark | Qwen2.5 7B Instruct | Qwen3.5 397B A17B | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 35.2 | - | - |
MMLU Pro Academic knowledge | 36.5 | - | - |
GPQA Graduate-level science | 5.5 | - | - |
BBH Big-Bench Hard | 34.9 | - | - |
Both models show comparable benchmark performance.
Cost vs Quality
X-axis:
Y-axis:
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Qwen2.5 7B Instruct
Other models
Context & Performance
Context Window
Qwen2.5 7B Instruct
32,768
tokens
Qwen3.5 397B A17B
262,144
tokens
Max output: 65,536 tokens
Qwen3.5 397B A17B has a 88% larger context window.
Speed Performance
Speed benchmarks not available for these models
Capabilities
Feature Comparison
| Feature | Qwen2.5 7B Instruct | 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 | Qwen2.5 7B Instruct | Qwen3.5 397B A17B |
|---|---|---|
| License | Open Source | Proprietary |
| Author | Qwen | Qwen |
| Released | Oct 2024 | Feb 2026 |
Qwen2.5 7B Instruct Modalities
Input
text
Output
text
Qwen3.5 397B A17B Modalities
Input
textimagevideo
Output
text