Qwen 3.5-4B

Qwen 3.5-4B is a compact 4-billion-parameter base model utilized as the foundation for specialized coding agents. It is designed for efficiency, enabling deployment on resource-constrained hardware such as a single GPU.

Key Characteristics

Training & Capabilities

  • Base Model: Qwen 3.5-4B provides the foundational language and reasoning capabilities.
  • Reinforcement Learning (RL): When adapted for specific tasks (e.g., software engineering), it undergoes unique RL training on synthetic datasets.
  • Synthetic Tasks: Training involves approximately 1,500 synthetic software engineering tasks to refine debugging and coding logic without relying on direct answer copying from larger models.

References

Source Notes