# Qwen3.5-Plus

Qwen3.5-Plus is an AI model released by Qwen on Feb 16 2026. It has a 1M context window.

## Facts

| Field | Value |
| --- | --- |
| Model | Qwen3.5-Plus |
| Developer | Qwen |
| Release date | Monday, Feb 16 2026 |
| Licensing | Proprietary |
| Context window | 1M |

## Questions and answers

### When was Qwen3.5-Plus released?

Qwen3.5-Plus was released by Qwen on Monday, Feb 16 2026.

### Who made Qwen3.5-Plus?

Qwen3.5-Plus was built by Qwen. Alibaba's AI lab, building the Qwen family. The most prolific publisher of open-weight models of any major lab, alongside a proprietary Max and Plus tier sold through Alibaba Cloud.

### What is the context window of Qwen3.5-Plus?

Qwen3.5-Plus has a context window of 1M. That is the maximum amount of input plus output the model can hold in a single request.

### Is Qwen3.5-Plus open source?

No. Qwen3.5-Plus is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

### What came before and after Qwen3.5-Plus?

Qwen's previous tracked release was Qwen3.5 on Feb 16 2026. It was followed by Qwen3.6-Plus on Apr 2 2026.


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Canonical page: https://aireleasetracker.com/model/qwen/qwen3.5-plus
Full dataset: https://aireleasetracker.com/llms-full.txt · JSON: https://aireleasetracker.com/models.json
Source: AI Release Tracker (https://aireleasetracker.com). Benchmark scores are the figures published by the releasing lab at launch.