Microsoft has released MAI-Cyber-1-Flash, its first dedicated cybersecurity model, and integrated it into MDASH, a vulnerability-hunting system that scored 95.95% on the CyberGym benchmark. The result outperforms GPT-5.5 Cyber at 85.6%, Anthropic’s Mythos 5 at 83.8%, GPT-5.6 Sol at 83.6%, and Gemini 3.5 Flash Cyber at 83.2%. MAI-Cyber-1-Flash handles up to 90% of tasks while MDASH routes the hardest 10% to GPT-5.4, delivering this performance at 50% of the cost of Microsoft’s previous best MDASH configuration. MDASH is now in private preview through Microsoft Security Exposure Management in the Defender portal, allowing customers to scan Git repositories and generate proposed code fixes.
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