tech π‘οΈ Microsoft cuts costs with in-house AI security model
Microsoft has shifted the majority of its security workload to a proprietary in-house AI model called MAI-Cyber-1-Flash. This system is deployed within Microsoft Defender, featuring three teams of AI agents for probing, investigation, and fixing. The model now handles about 90% of the tasks, escalating only the hardest 10% to OpenAI's GPT-5.4. This strategic move has successfully cut the compute bill by roughly half while improving the system's performance. The 90/10 split demonstrates a shift where proprietary efficiency beats raw frontier model power in volume capture. π‘οΈ