--- format: "aidr-story-markdown/v1" id: "baf0b4a325e4204a6bf9b5ab706f89ba4d58326d2e3e6c8a18da2ef9050d8f8a" canonical_url: "https://aidr.today/baf0b4a3?lang=en" title: "Can an Open Model Do Security Research? Cantina’s apex-flash-1 Solves 40 of 60 Held-Out Bug Tasks" lang: "en" requested_lang: "en" available_langs: ["en","vi"] translation_fallback: null fallback_fields: [] published_at: "2026-10-05T01:47:28.000Z" category: "Open Source" topics: ["open-source"] source_urls: ["https://www.marktechpost.com/2026/10/04/can-an-open-model-do-security-research-cantinas-apex-flash-1-solves-40-of-60-held-out-bug-tasks/"] summary: "Cantina Security, with Yeta Labs, has released apex-flash-1, an open-weights model trained specifically for vulnerability research. It is a reinforcement learning fine-tune of Z.ai’s GLM-5.3-Flash, released on Hugging Face under the MIT license. Is it deployable? Yes, the MIT weights serve on vLLM, SGLang or Transformers, but BF16 needs roughly 640 GB of GPU memory. […] The post Can an Open Model Do Security Research? Cantina’s apex-flash-1 Solves 40 of 60 Held-Out Bug Tasks appeared first on MarkTechPost ." --- # Can an Open Model Do Security Research? Cantina’s apex\-flash\-1 Solves 40 of 60 Held\-Out Bug Tasks > [Open the canonical story]() **Published:** 2026-10-05T01:47:28.000Z **Category:** Open Source **Topics:** open\-source ## Summary Cantina Security, with Yeta Labs, has released apex\-flash\-1, an open\-weights model trained specifically for vulnerability research\. It is a reinforcement learning fine\-tune of Z\.ai’s GLM\-5\.3\-Flash, released on Hugging Face under the MIT license\. Is it deployable? Yes, the MIT weights serve on vLLM, SGLang or Transformers, but BF16 needs roughly 640 GB of GPU memory\. \[…\] The post Can an Open Model Do Security Research? Cantina’s apex\-flash\-1 Solves 40 of 60 Held\-Out Bug Tasks appeared first on MarkTechPost \. ## Sources - [Story source]()