# Qwen3.5 2B

> Qwen3.5 2B is an open-weight language model from Alibaba (Qwen), released on 1 Nov 2025. It accepts text and generates text, with a 33K-token context window and up to 8K output tokens per response.

Source page: https://www.aimodel.directory/models/qwen3-5-2b
Last verified: 21 Oct 2026

## Specifications

- **Developer:** Alibaba (Qwen)
- **Release date:** 1 Nov 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/qvac/models/qwen3.5-2b.toml)
- **Status:** Generally available (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/qvac/models/qwen3.5-2b.toml)
- **Weights:** Open weights (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/qvac/models/qwen3.5-2b.toml)
- **Context window:** 33K (32,768 tokens) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/qvac/models/qwen3.5-2b.toml)
- **Max output:** 8K tokens (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/qvac/models/qwen3.5-2b.toml)
- **Input:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/qvac/models/qwen3.5-2b.toml)
- **Output:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/qvac/models/qwen3.5-2b.toml)
- **Reasoning mode:** No (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/qvac/models/qwen3.5-2b.toml)
- **Tool calling:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/qvac/models/qwen3.5-2b.toml)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|

## FAQ

### What is the context window of Qwen3.5 2B?

Qwen3.5 2B has a context window of 32,768 tokens (33K) and can generate up to 8,192 tokens in a single response, according to models.dev.

### Is Qwen3.5 2B open source?

Qwen3.5 2B is an open-weight model. Check the license terms before commercial use.

### When was Qwen3.5 2B released?

Alibaba (Qwen) released Qwen3.5 2B on 1 Nov 2025, according to models.dev.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "Qwen3.5 2B", https://www.aimodel.directory/models/qwen3-5-2b