Microsoft and SJTU open-source Argus, an agent that ran 1,548 hours and solved a 20-year-old math problem

jiqizhixin · x · 2026-09-16

Microsoft and Shanghai Jiao Tong University have open-sourced Argus, a general agent inference runtime for long-horizon research tasks. In testing, the agent ran continuously for 1,548 hours across 27 research campaigns, requested human intervention only once every 40.7 hours on average, maintained a 95.1%–98.7% duty cycle, and solved a 20-year-old open math problem along the way.

Most agent systems stall when humans leave: decisions require human grants, and without dense reward feedback agents become sluggish. Argus is built on four principles:

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