Explore Qwen: Qwen3 4B by Qwen

Versatile text model with dual-mode architecture for diverse tasks.

Input: text Output: text Context: 40,960 tokens Release: 2025-04-30

Qwen: Qwen3 4B (free) by Qwen is a dense language model released on April 30, 2025. With an impressive 4 billion parameters, it is designed to handle a range of text-based tasks, from general-purpose applications to reasoning-intensive challenges. The model features a dual-mode architecture that dynamically switches between 'thinking' and 'non-thinking' modes, optimizing both logical reasoning and dialogue generation. Its extensive context window of 40,960 tokens supports complex multi-turn conversations and detailed instruction following. Qwen3 4B accepts text inputs and outputs, making it a robust solution for various text-to-text applications.

Use Cases

Here are a few ways teams apply Qwen: Qwen3 4B (free) in practice—from fast drafting to multimodal understanding. Adapt these ideas to your workflow.

Engage in detailed multi-turn conversations

Follow complex instructions seamlessly

Handle reasoning-intensive text tasks

Generate efficient and logical dialogues

Key Features

A quick look at the capabilities that make this model useful in real projects.

4 billion parameter language model

Dual-mode architecture: thinking and non-thinking

Dynamic switching for reasoning and dialogue

Supports multi-turn chat and instruction following

40,960 token context window

Text-to-text input and output modalities

Specs

Overview

Vendor
qwen

Model ID
qwen/qwen3-4b:free

Release
2025-04-30

Modalities & context

Input
text

Output
text

Context
40,960 tokens

Parameters & defaults

Supported parameters: frequency_penalty, include_reasoning, max_tokens, presence_penalty, reasoning, response_format, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_p

Defaults: temperature 0.2, top_p 0.95

Benchmark tests: Qwen: Qwen3 4B (free)

We ran this model against a few representative prompts to show its range. Review the outputs below and be the judge.

Text

Prompt:

Write 150 words on how AI might positively upend work, leisure and creativity

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Run this prompt on Upend.AI

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up.end

/ˌəpˈend/

verb

To “upend” means to completely disrupt, overturn, or drastically change the established order or structure of something. It implies a significant shift or alteration that can potentially have far-reaching consequences. When something is upended, it is turned upside down or transformed in a way that challenges conventional norms or expectations. The term often carries a sense of innovation, transformation, and sometimes even a hint of upheaval, indicating that the changes are not just minor adjustments but rather a fundamental reimagining of the status quo.

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