Key Takeaways
Llama 3.1 405B Instruct wins:
- Better at math
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 | Llama 3.1 405B Instruct | 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.
Llama 3.1 405B Instruct Providers
No provider data available
Qwen3.5 397B A17B Providers
No provider data available
Benchmark Comparison
8
Benchmarks Compared
0
Llama 3.1 405B Instruct Wins
3
Qwen3.5 397B A17B Wins
Benchmark Scores
| Benchmark | Llama 3.1 405B Instruct | Qwen3.5 397B A17B | Winner |
|---|---|---|---|
Intelligence Index Overall intelligence score | 17.4 | 40.1 | |
Coding Index Code generation & understanding | 14.5 | 37.4 | |
Math Index Mathematical reasoning | 3.0 | - | - |
MMLU Pro Academic knowledge | 73.2 | - | - |
GPQA Graduate-level science | 51.5 | 86.1 | |
LiveCodeBench Competitive programming | 30.5 | - | - |
Aider Real-world code editing | 66.2 | - | - |
AIME Competition math | 21.3 | - | - |
Qwen3.5 397B A17B significantly outperforms in coding benchmarks.
Cost vs Quality
X-axis:
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Llama 3.1 405B Instruct
Other models
Context & Performance
Context Window
Llama 3.1 405B Instruct
131,000
tokens
Qwen3.5 397B A17B
262,144
tokens
Qwen3.5 397B A17B has a 50% larger context window.
Speed Performance
| Metric | Llama 3.1 405B Instruct | Qwen3.5 397B A17B | Winner |
|---|---|---|---|
| Tokens/second | 33.7 tok/s | 55.5 tok/s | |
| Time to First Token | 0.71s | 1.55s |
Qwen3.5 397B A17B responds 65% faster on average.
Capabilities
Feature Comparison
| Feature | Llama 3.1 405B 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 | Llama 3.1 405B Instruct | Qwen3.5 397B A17B |
|---|---|---|
| License | Open Source | Open Source |
| Author | Meta-llama | Qwen |
| Released | Jul 2024 | Feb 2026 |
Llama 3.1 405B Instruct Modalities
Input
text
Output
text
Qwen3.5 397B A17B Modalities
Input
textimagevideo
Output
text