#rsi

A deep read of arXiv:2609.18366 CHASE—automatic harness optimization can exploit benchmark-wide shortcuts on a fixed released protocol; a Challenger searches executable protocol transforms with a validity firewall and held-out confirmation, retaining released gains while cutting gain destruction on Syn-Ledger and OfficeQA.

Y Combinator's Winter 2026 batch is packed with autonomous agent startups. The deeper signal is not more AI copilots, but software that replaces SaaS workflows outright.