By Huaibo Zhao,
Publication Date: 2026-08-19 21:59:00
July was an Antares month, with a parallel thread on smarter evaluation. Here’s what we shipped.
Antares (technical report). A family of compact, open-weight models (350M, 1B, and 3B) built for one job: agentic vulnerability localization. Given just a CWE description and read-only access to a repository, Antares searches the codebase and pinpoints the files where the vulnerability lives. The headline: the 3B model rivals frontier systems like GPT-5.5 while running locally at a tiny fraction of the cost, and it outperforms open models many times its size. The thesis behind it — for security, a small model trained for the actual task beats a giant general-purpose one, and inference stays in-house so your source never leaves the machine. Antares-350M and Antares-1B are publicly released. Within a month, they have reached 29,800 downloads on Hugging Face.
Antares Quickstart (cookbook). The practical companion: a CLI that turns the model into something you can run in ~15 minutes….
