MAI-Cyber-1-Flash

Microsoft AI's first cybersecurity model: a sparse MoE (137B total / 5B active, 256K context) in the MAI-Thinking-1 lineage. Inside the MDASH multi-agent security harness it handles ~90% of vulnerability-identification work (GPT-5.4 takes the remainder); MDASH scores ~96% on CyberGym, claimed +12 points over Anthropic Mythos at half the cost. Proprietary.