# Qwen3

Qwen3 is an AI model released by Qwen on Apr 29 2025. It has 235B parameters, a 128k context window and open weight.

## Facts

| Field | Value |
| --- | --- |
| Model | Qwen3 |
| Developer | Qwen |
| Release date | Tuesday, Apr 29 2025 |
| Licensing | Open Weight |
| Parameters | 235B |
| Context window | 128k |

## About Qwen3

Qwen3, released April 29, 2025, unified two things Alibaba had previously shipped separately: a conventional instruct model and a reasoning model. Every Qwen3 model could switch between thinking and non-thinking mode within a single set of weights, with the thinking budget controllable per request — the same hybrid idea Anthropic had introduced with Claude 3.7 Sonnet two months earlier, but in open weights.

The family spanned dense models at 0.6B, 1.7B, 4B, 8B, 14B and 32B plus two mixture-of-experts models, 30B-A3B and the 235B-A22B flagship, all trained on 36 trillion tokens across 119 languages and dialects. Crucially, all of it went out under Apache 2.0 including the flagship — the first time Qwen had put the largest model of a generation under a fully permissive licence, and a direct contrast with Meta's custom Llama terms.

## Questions and answers

### When was Qwen3 released?

Qwen3 was released by Qwen on Tuesday, Apr 29 2025.

### Who made Qwen3?

Qwen3 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?

Qwen3 has a context window of 128k. That is the maximum amount of input plus output the model can hold in a single request.

### How many parameters does Qwen3 have?

Qwen3 is reported at 235B parameters.

### Is Qwen3 open source?

Partly. Qwen3 is an open-weight model: the trained weights are free to download and run locally or on your own infrastructure, but the training data and code are not fully released and the license may restrict some commercial uses. It is not open source in the strict sense.

### What came before and after Qwen3?

Qwen's previous tracked release was QwQ-32B on Mar 6 2025, 54 days earlier. It was followed by Qwen3-Coder on Jul 22 2025.


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Canonical page: https://aireleasetracker.com/model/qwen/qwen3
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.