Qwen 3.5 4B
Qwen3.5-4B is a mid-size model from Alibaba's Qwen3.5 series that delivers a strong balance of performance and efficiency. It features a 262K token context window (extensible to 1M with YaRN), thinking/reasoning mode, tool calling, and support for 201 languages.
Input
Output
Context
262K
Max Output
8K
Parameters
4B
Technical Specifications
Model TypeChat
Context Window262K
Max Output Tokens8K
Parameters4B
Training Cutoff—
Licenseapache-2.0
Capabilities
Input Modalities
textimage
Output Modalities
text
Features
function_callingjson_modereasoningstreamingtext_generationvision
Resources & Links
Estimated GPU Requirements for Qwen 3.5 4B
Estimates based on INT8 quantization. Actual requirements vary by framework and configuration.
Related Tools
Data sourced from official provider APIs and documentation
Last updated: May 5, 2026
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