We trained a cybersecurity-focused Mythos like LLM open weights on HuggingFace

In three linesOpenMythos, an open-source LLM specialized in cybersecurity, trained via SFT then RLVR (reward learning with verification). Data: 1.84K ArXiv cs.CR papers + structured CVE dataset. Model reduces hallucinations on vulnerabilities and improves uncertainty calibration. Demo, model, and datasets available on HuggingFace.

Summary generated by Claude — human-verified