fableforge-ai/NEXUS-Medical

TEXT GENERATIONConcurrent Unit Cost:1Model Size:1.5BQuant:BF16Context Size:32kTool Calling:SupportedPublished:Jul 5, 2026License:apache-2.0Architecture:Transformer0.0K Open Weights Featherless Exclusive Cold

NEXUS-Medical by fableforge-ai is a 1.5 billion parameter instruction-tuned language model, based on Qwen2.5-1.5B-Instruct, specifically optimized for medical Q&A and clinical reasoning. This lightweight model excels in domain-specific knowledge and reasoning within the healthcare sector, achieving a 93% score in a 30-prompt evaluation covering domain knowledge, uncensored responses, reasoning, and tool use. It is designed to provide uncensored, specialized responses for medical applications.

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NEXUS-Medical: A Specialized 1.5B Medical LLM

NEXUS-Medical, developed by fableforge-ai, is a 1.5 billion parameter language model built upon the Qwen2.5-1.5B-Instruct architecture. It is a domain-specific specialist within the FableForge NEXUS family, meticulously fine-tuned for medical Q&A and clinical reasoning tasks.

Key Capabilities & Performance

  • Exceptional Domain Knowledge: Achieved 4.7/5 in domain knowledge and 5.0/5 in reasoning during internal evaluations.
  • High Accuracy: Scored 140/150 (93%) in a 30-prompt evaluation, demonstrating strong performance across medical domain knowledge, reasoning, and tool use.
  • Lightweight & Efficient: Despite its small size, it "punches above its weight" in specialized medical tasks.
  • Uncensored Responses: Designed to provide direct and uncensored answers relevant to medical and general queries.

Ideal Use Cases

  • Medical Q&A Systems: Answering specific questions related to medicine and healthcare.
  • Clinical Reasoning Support: Assisting with diagnostic processes or treatment considerations.
  • Specialized AI Agents: Powering applications requiring deep medical domain expertise with a small footprint.

NEXUS-Medical is part of a family of specialized models, including NEXUS-Coder, NEXUS-Security, NEXUS-Legal, NEXUS-Finance, and NEXUS-Science, all designed for specific professional domains.