FINAL-Bench/Darwin-28B-Coder

VISIONConcurrent Unit Cost:2Model Size:27BQuant:FP8Context Size:32kTool Calling:SupportedPublished:May 20, 2026License:apache-2.0Architecture:Transformer0.0K Open Weights Featherless Exclusive Cold

Darwin-28B-Coder is a 28-billion parameter code-specialized language model developed by VIDRAFT FINAL-Bench, built on the Darwin family (Qwen3.5-compatible) architecture with a 32K token context length. It excels in function-level code generation, complex-library composition, and tool/function calling, achieving 100.0% on HumanEval and 72.0% on BigCodeBench-Complete. This model is optimized for high-performance code tasks, competing directly with frontier models like GPT-4o and Claude 3.5 Sonnet.

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Darwin-28B-Coder: A Code-Specialized LLM

Darwin-28B-Coder is a 28-billion parameter language model from VIDRAFT FINAL-Bench, specifically engineered for advanced code generation and understanding. Based on the Darwin family (Qwen3.5-compatible) architecture, it features a substantial 32K token context length, enabling it to handle complex coding tasks.

Key Capabilities & Performance

  • Exceptional Code Generation: Achieves a perfect 100.0% on HumanEval, outperforming GPT-4o and Claude 3.5 Sonnet.
  • Complex Library Composition: Leads public benchmarks with 72.0% on BigCodeBench-Complete, demonstrating strong capabilities in multi-library code generation.
  • Function Calling: Scores 90.0% on Function Calling benchmarks, comparable to Claude 3.7 Sonnet and GPT-4o.
  • MBPP Performance: Attains 84.0% on MBPP, showcasing robust problem-solving skills.
  • Training Data: Fine-tuned using m-a-p/CodeFeedback-Filtered-Instruction (Python, AST-validated) for high-quality code output.

Ideal Use Cases

  • Function-level code generation: For developers needing precise and efficient code snippets.
  • Complex library integration: When working with multiple libraries and requiring sophisticated code composition.
  • Tool and function calling: For building agents or systems that interact with external tools and APIs.
  • Competitive coding and development: As a powerful assistant for challenging programming tasks.