Can an Open Model Do Security Research? Cantina’s apex-flash-1 Solves 40 of 60 Held-Out Bug Tasks
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. What Cantina Built apex-flash-1 has 321.3B total parameters, per its Hugging Face safetensors metadata....
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. What Cantina Built apex-flash-1 has 321.3B total parameters, per its Hugging Face safetensors metadata....