Jackrong/Qwen3.5-4B-Python-Coder

VISIONConcurrency Cost:1Model Size:4.5BQuant:BF16Ctx Length:32kTool Calling:SupportedPublished:Mar 14, 2026License:apache-2.0Architecture:Transformer0.0K Open Weights Cold

Jackrong/Qwen3.5-4B-Python-Coder is a 4.5 billion parameter language model based on the Qwen3.5 architecture, specifically fine-tuned for Python code generation and understanding. This model is currently in an experimental preview phase, with ongoing testing and optimization for improved performance. It is designed to assist with coding tasks, leveraging its specialized training for Python development. The model features a notable context length of 32768 tokens.

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Jackrong/Qwen3.5-4B-Python-Coder: Experimental Python Code Model

This model, developed by Jackrong, is a 4.5 billion parameter variant of the Qwen3.5 architecture, specifically designed and fine-tuned for Python coding tasks. It boasts a substantial context length of 32768 tokens, which is beneficial for handling larger codebases and complex programming problems.

Current Status and Recommendations

It is crucial to note that Jackrong/Qwen3.5-4B-Python-Coder is currently in a preview release and is considered experimental. The developer is actively testing and optimizing its training settings and strategies. Therefore, it is:

  • Not recommended for serious evaluation at this stage.
  • Subject to further tuning and a more stable version is anticipated.

Key Characteristics

  • Architecture: Qwen3.5 base model.
  • Parameters: 4.5 billion.
  • Context Length: 32768 tokens.
  • Specialization: Fine-tuned for Python code generation and comprehension.

When to Use (with caution)

Given its experimental status, this model is best suited for:

  • Early exploration and testing by developers interested in its potential for Python coding.
  • Contributing feedback to the developer on its current performance and identified issues.
  • Non-critical personal projects where stability is not a primary concern.