Cisco Foundation AI Releases Antares: 350M and 1B Open-Weight Models That Localize Known Vulnerabilities Inside Real Codebases

1Key Takeaways

• Cisco Foundation AI has released Antares, a family of small language models trained to pinpoint where known vulnerabilities live inside a codebase.
• Antares-1B reaches 0.209 File F1 on the new Vulnerability Localization Benchmark, above GLM-5.2 at 753B parameters and Gemini 3 Pro.
• The untrained Granite 4.0 checkpoints score near zero under the same protocol, so post-training supplies almost all of the capability.
• A full 500-task sweep runs in roughly 13 minutes on a single H100 for under a….