Qwen3.5 397B-A17B
Summary
Qwen3.5 397B-A17B is an open-weight language model from Alibaba (Qwen), released on 15 Feb 2026. It accepts text, images, video and audio and generates text, with a 262K-token context window and up to 66K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.39 per million input tokens and $2.34 per million output tokens (SiliconFlow), across 7 providers we track.
Large open Qwen multimodal MoE for visual agents and long technical tasks
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Alibaba (Qwen) |
|---|---|
| Release date | 15 Feb 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Open weights [Hugging Face] |
| License | apache-2.0 [Hugging Face] |
| Parameters | 403B [Hugging Face] |
| Context window | 262K (262,144 tokens) [models.dev] |
| Max output | 66K tokens [models.dev] |
| Knowledge cutoff | Jan 2025 [models.dev] |
| Input | Text, images, video and audio [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | Yes [models.dev] |
| Hugging Face | Qwen/Qwen3.5-397B-A17B [Hugging Face] |
Qwen3.5 397B-A17B API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| SiliconFlow Qwen/Qwen3.5-397B-A17B | $0.39 | $2.34 | – | 262K | models.dev, 4 Oct 2026 |
| DeepInfra Qwen/Qwen3.5-397B-A17B | $0.45 | $3 | $0.22 | 262K | models.dev, 4 Oct 2026 |
| OpenRouter qwen/qwen3.5-397b-a17b | $0.55 | $3.50 | $0.23 | 262K | OpenRouter, 4 Oct 2026 |
| Alibaba Cloud Model Studio qwen3.5-397b-a17b | $0.60 | $3.60 | – | 262K | models.dev, 4 Oct 2026 |
| Hugging Face Inference Providers Qwen/Qwen3.5-397B-A17B | $0.60 | $3.60 | – | 262K | models.dev, 4 Oct 2026 |
| Nebius AI Studio Qwen/Qwen3.5-397B-A17B | $0.60 | $3.60 | $0.06 | 262K | models.dev, 4 Oct 2026 |
| Novita AI qwen/qwen3.5-397b-a17b | $0.60 | $3.60 | – | 262K | models.dev, 4 Oct 2026 |
Frequently asked questions
What is the context window of Qwen3.5 397B-A17B?
Qwen3.5 397B-A17B has a context window of 262,144 tokens (262K) and can generate up to 65,536 tokens in a single response, according to models.dev.
How much does the Qwen3.5 397B-A17B API cost?
Through Alibaba Cloud Model Studio, Qwen3.5 397B-A17B costs $0.60 per million input tokens and $3.60 per million output tokens. The lowest listed price is $0.39 input / $2.34 output through SiliconFlow. Prices last verified 4 Oct 2026.
Is Qwen3.5 397B-A17B open source?
Qwen3.5 397B-A17B is an open-weight model: its weights are published on Hugging Face as Qwen/Qwen3.5-397B-A17B under the apache-2.0 license. Check the license terms before commercial use.
When was Qwen3.5 397B-A17B released?
Alibaba (Qwen) released Qwen3.5 397B-A17B on 15 Feb 2026, according to models.dev.
Which providers offer Qwen3.5 397B-A17B?
We track Qwen3.5 397B-A17B on 7 providers: SiliconFlow, DeepInfra, OpenRouter, Alibaba Cloud Model Studio, Hugging Face Inference Providers, Nebius AI Studio, Novita AI.
Change history
No changes detected since we started tracking this model. We re-check every source daily.
Sources
- https://openrouter.ai/qwen/qwen3.5-397b-a17b
- https://github.com/sst/models.dev/blob/dev/providers/alibaba/models/qwen3.5-397b-a17b.toml
- https://huggingface.co/Qwen/Qwen3.5-397B-A17B
- https://github.com/sst/models.dev/blob/dev/providers/siliconflow/models/Qwen/Qwen3.5-397B-A17B.toml
- https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-397B-A17B.toml
- https://github.com/sst/models.dev/blob/dev/providers/huggingface/models/Qwen/Qwen3.5-397B-A17B.toml
- https://github.com/sst/models.dev/blob/dev/providers/nebius/models/Qwen/Qwen3.5-397B-A17B.toml
- https://github.com/sst/models.dev/blob/dev/providers/novita-ai/models/qwen/qwen3.5-397b-a17b.toml