# Qwen3.5 9B

> Qwen3.5 9B is an open-weight language model from Alibaba (Qwen), released on 23 Feb 2026. It accepts text, images and video 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 $0.10 per million input tokens and $0.15 per million output tokens (DeepInfra), across 5 providers we track.

Source page: https://www.aimodel.directory/models/qwen3-5-9b
Last verified: 4 Oct 2026

## Specifications

- **Developer:** Alibaba (Qwen)
- **Release date:** 23 Feb 2026 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-9B.toml)
- **Status:** Generally available (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-9B.toml)
- **Weights:** Open weights (source: Hugging Face, https://huggingface.co/Qwen/Qwen3.5-9B)
- **License:** apache-2.0 (source: Hugging Face, https://huggingface.co/Qwen/Qwen3.5-9B)
- **Parameters:** 9.7B (source: Hugging Face, https://huggingface.co/Qwen/Qwen3.5-9B)
- **Context window:** 262K (262,144 tokens) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-9B.toml)
- **Max output:** 66K tokens (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-9B.toml)
- **Knowledge cutoff:** Apr 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-9B.toml)
- **Input:** Text, images and video (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-9B.toml)
- **Output:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-9B.toml)
- **Reasoning mode:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-9B.toml)
- **Tool calling:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-9B.toml)
- **Structured output:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/deepinfra/models/Qwen/Qwen3.5-9B.toml)
- **Hugging Face:** Qwen/Qwen3.5-9B (source: Hugging Face, https://huggingface.co/Qwen/Qwen3.5-9B)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| DeepInfra | $0.10 | $0.15 | – | 262K |
| SiliconFlow | $0.10 | $0.15 | – | 262K |
| OpenRouter | $0.10 | $0.15 | – | 256K |
| Together AI | $0.17 | $0.25 | – | 262K |
| Hugging Face Inference Providers | $0.17 | $0.25 | – | 262K |

## FAQ

### What is the context window of Qwen3.5 9B?

Qwen3.5 9B 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 9B API cost?

Qwen3.5 9B is listed from $0.10 per million input tokens and $0.15 per million output tokens (DeepInfra). Prices last verified 4 Oct 2026.

### Is Qwen3.5 9B open source?

Qwen3.5 9B is an open-weight model: its weights are published on Hugging Face as Qwen/Qwen3.5-9B under the apache-2.0 license. Check the license terms before commercial use.

### When was Qwen3.5 9B released?

Alibaba (Qwen) released Qwen3.5 9B on 23 Feb 2026, according to models.dev.

### Which providers offer Qwen3.5 9B?

We track Qwen3.5 9B on 5 providers: DeepInfra, SiliconFlow, OpenRouter, Together AI, Hugging Face Inference Providers.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "Qwen3.5 9B", https://www.aimodel.directory/models/qwen3-5-9b