Microsoft has introduced its first cybersecurity AI model called MAI Cyber 1 Flash. The company says the model is built for complex codebases and can identify security flaws more efficiently at a low cost. Microsoft has also integrated the new model into its MDASH security platform. According to the tech giant, MAI Cyber 1 Flash even beats GPT 5.5 Cyber, GPT 5.6 Sol and Mythos 5 on CyberGym, a benchmark which is used to measure how well AI models find real security issues in large codebases.
The tech giant also claims that MAI Cyber 1 Flash AI delivers “world-class performance” at 50 per cent of the cost of leading models.
“MAI Cyber 1 Flash was designed to efficiently handle up to 90 per cent of all tasks, enabling MDASH to use the larger and most costly models in our fleet (in this case GPT 5.4) for the 10 per cent of exceptionally hard tasks that truly need them,” Microsoft said.
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The company claims that MDASH with MAI-Cyber 1 Flash achieved a 96 per cent score on the CyberGym benchmark, which is 12 points higher than Mythos 5.
Microsoft also announced Perception, a new agent-based security system that works alongside MDASH. It is designed to help security teams continuously monitor systems, patch software vulnerabilities and respond to new threats. The company says Perception will also use MAI Cyber 1 Flash for more security-related tasks in the future.
The company also said that safety was a key focus while developing the model. MAI Cyber 1 Flash was tested by Microsoft’s AI Red Team, evaluated through adversarial security exercises and independently reviewed by a third party.
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“Through MDASH, customers get enterprise-grade controls including Role-Based Controls, tenant isolation, encryption, auditability, and sandboxed execution environments with no internet access,” the tech giant said. “The result is a cyber model that delivers powerful capabilities to defenders while maintaining the governance, security, and control enterprises expect from Microsoft.”
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