📊 Learn how to observe & evaluate agents on LangChain Academy 📊

Testing applications is essential to the development lifecycle, but LLM systems are non-deterministic – you can’t always predict how they will behave.

Add multi-turn interactions and tool-calling agents, and… pic.twitter.com/MGedeywILT

— LangChain (@LangChain) 31 décembre 2025

Learn how to observe & evaluate agents on LangChain Academy Testing applications is essential to the development lifecycle, but LLM systems are non-deterministic – you can’t always predict how they will behave. Add multi-turn interactions and tool-calling agents, and

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