04:00
2026-09-11
machinebrief.com
large-language-models
When Synthetic Data Hurts: On Catastrophic Forgetting in Skill Retrieval for LLM Agents
A production skill router covering 34,396 skills shows that fine-tuning on synthetic data improves in-distribution skill retrieval for LLM agents but causes catastrophic forgetting on real and out-of-…