Qwen3.5 397B A17B
Alibaba · Multimodal · Released Feb 2026
Qwen3.5 397B A17B is Alibaba's largest text language model from the Qwen3.5 generation, with 397 billion parameters and a 262K token context window.
- Strengths
- Handles complex reasoning, long-form generation, and nuanced language understanding across specialized domains.
- Best for
- Tasks requiring deep reasoning, comprehensive analysis, and handling of complex multi-step problems where raw model capacity matters.
- Limitations
- Larger models trade inference speed and resource requirements for capability; newer Qwen3.6 generation and mid-tier Qwen3.5 Plus variants offer alternative tradeoffs depending on workload.
Input / 1M
$0.5
Output / 1M
$3.60
Cached input / 1M
$0.3
Context window
262K
Price history
Input (solid)Output (dashed)
Price change
- 30d
- in decreased 9.1% out increased 2.9%
- 90d
- in increased 28.2% out increased 53.8%
- 1y
- in increased 28.2% out increased 53.8%
- Since launch
- in increased 28.2% out increased 53.8%
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 22 Oct 2026 | $0.5 | $3.60 | $0.3 | Imported from OpenRouter | openrouter.ai |
| 20 Oct 2026 | $0.39 | $2.34 | — | Imported from OpenRouter | openrouter.ai |
| 14 Oct 2026 | $0.5 | $3.60 | $0.3 | Imported from OpenRouter | openrouter.ai |
| 9 Oct 2026 | $0.55 | $3.50 | $0.225 | Imported from OpenRouter | openrouter.ai |
| 6 Oct 2026 | $0.45 | $3.00 | $0.22 | Imported from OpenRouter | openrouter.ai |
| 8 Sep 2026 | $0.55 | $3.50 | $0.225 | Imported from OpenRouter | openrouter.ai |
| 6 Sep 2026 | $0.39 | $2.34 | — | Imported from OpenRouter | openrouter.ai |
| 3 Sep 2026 | $0.55 | $3.50 | $0.225 | Imported from OpenRouter | openrouter.ai |
| 26 Aug 2026 | $0.39 | $2.34 | — | Imported from OpenRouter | openrouter.ai |
| 24 Aug 2026 | $0.5 | $3.60 | $0.3 | Imported from OpenRouter | openrouter.ai |
| 14 Aug 2026 | $0.39 | $2.34 | — | Imported from OpenRouter | openrouter.ai |
| 13 Aug 2026 | $0.5 | $3.60 | $0.3 | Imported from OpenRouter | openrouter.ai |
| 11 Aug 2026 | $0.5 | $3.60 | $0.3 | Imported from OpenRouter | openrouter.ai |
| 10 Aug 2026 | $0.39 | $2.34 | — | Imported from OpenRouter | openrouter.ai |
| 9 Aug 2026 | $0.5 | $3.60 | $0.3 | Imported from OpenRouter | openrouter.ai |
| 17 Jul 2026 | $0.39 | $2.34 | — | Imported from OpenRouter | openrouter.ai |
| 15 Jul 2026 | $0.45 | $3.00 | $0.225 | Imported from OpenRouter | openrouter.ai |
| 7 Jul 2026 | $0.385 | $2.45 | $0.111 | Imported from OpenRouter | openrouter.ai |
| 16 Jun 2026 | $0.385 | $2.45 | — | Imported from OpenRouter | openrouter.ai |
| 11 Jun 2026 | $0.39 | $2.34 | — | Imported from OpenRouter | openrouter.ai |