2026-10-07 # Microsoft Research releases 3,500-line Agent Lightning v1.0 RL framework Microsoft Research published Agent Lightning v1.0, a 3,500-line reinforcement-learning framework that connects existing AI agents to RL training without requiring them to be rebuilt, per microsoft.com. ## What else the source says - Framework is called Agent Lightning, version 1.0 - Codebase totals about 3,500 lines - Framework links existing agents to RL training - Goal is improving agents without rebuilding them - Published via the Microsoft Research blog Source. [microsoft.com](https://www.microsoft.com/en-us/research/blog/agent-lightning-v1-0-a-3500-line-lightweight-agentic-rl-framework-for-training-agents-with-real-harnesses/) ## TRACE - First seen Oct 7, 2026, 9:01 AM PT - Published Oct 8, 2026, 12:38 AM PT, 15.6 h after first seen - Source microsoft.com (Company source) - Checks Checked automatically [SOTO home](https://signalsoftomorrow.com/)