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Research digest

Agent Lightning v1.0: Microsoft’s 3,500-Line Framework Trains the Agent Harness You Already Deploy
Byeditor October 8, 2026

The Problem With Traditional Agentic RL Early agent RL systems, including verl, AReaL, and slime, were built on a shared assumption. The training framework owns the interaction loop with the environment.

Read More Agent Lightning v1.0: Microsoft’s 3,500-Line Framework Trains the Agent Harness You Already Deploy

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