Muhammadreza/OpenMythos-9B-1M-heretic

VISIONConcurrent Unit Cost:1Model Size:9BQuant:FP8Context Size:32kTool Calling:SupportedPublished:Jun 29, 2026License:apache-2.0Architecture:Transformer Open Weights Featherless Exclusive Cold

Muhammadreza/OpenMythos-9B-1M-heretic is a 9 billion parameter language model developed by Muhammadreza. This model demonstrates strong performance in mathematical reasoning and STEM-related tasks, achieving an 83.0% exact match on GSM8K (5-shot) and a 77.07% accuracy on the overall STEM benchmark. It is particularly well-suited for applications requiring robust problem-solving capabilities in scientific and technical domains.

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OpenMythos-9B-1M-heretic: A 9B Parameter Model for STEM and Reasoning

OpenMythos-9B-1M-heretic is a 9 billion parameter language model developed by Muhammadreza, showcasing notable capabilities in mathematical and scientific reasoning. The model's performance is highlighted across several benchmarks, indicating its strength in complex problem-solving.

Key Capabilities & Performance

  • Mathematical Reasoning (GSM8K): Achieves an 83.0% exact match (5-shot) on the GSM8K benchmark, a dataset focused on grade school math word problems. With Chain-of-Thought (CoT) prompting, it reaches 84.4% (8-shot).
  • STEM Domain Accuracy: Demonstrates an overall accuracy of 77.07% across a comprehensive STEM benchmark, covering various scientific and technical subjects.
  • Specific STEM Strengths: Shows high accuracy in areas like Astronomy (92.11%), College Biology (93.75%), High School Biology (94.52%), and High School Computer Science (89.0%).
  • General Reasoning: Scores 53.6% on ARC Challenge (0-shot) and 44.95% on GPQA Diamond (0-shot), indicating general reasoning abilities.

Good For

  • Educational Tools: Developing applications for tutoring or problem-solving in mathematics and science.
  • Technical Q&A: Answering complex questions in STEM fields.
  • Research Assistance: Aiding in tasks that require understanding and processing scientific or mathematical concepts.