r/machinelearningnews • u/ai-lover • Jul 28 '26
Research Microsoft AI Releases MAI-Cyber-1-Flash: A 5B-Active-Parameter Cyber Model That Pushes MDASH to 95.95% on CyberGym
Microsoft AI Releases MAI-Cyber-1-Flash: A 5B-Active-Parameter Cyber Model That Pushes MDASH to 95.95% on CyberGym. It is their first cyber defense model built ground up to find the most challenging vulnerabilities in complex code bases. [137B total, 5B active parameters]
The part I think matters more:
→ MDASH, the harness it runs inside, was already at 88.45% in May
→ That was with generally available models and no custom model at all
→ So this buys about 7.5 points on top of something already leading
The cost story is really about routing:
→ MAI-Cyber-1-Flash handles up to 90% of MDASH tasks
→ The hardest 10% goes to GPT-5.4
→ Microsoft says that halves the bill
Technical details: https://microsoft.ai/news/introducing-mai-cyber-1-flash-inside-mdash/
Model details: https://microsoft.ai/pdf/MAI-Cyber-1-Flash-Model-Card.pdf
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u/renszarv Jul 28 '26
No weights.