On this day: Jan 27

A case where trademark law put a stop to the practice of open-source agents riding on a model provider's brand

Separates real-time response and intelligence by frequency band; shifts from upper-body control to whole-body control

R1's claim of low-cost training shook the moat argument behind AI capex

Made prefix caching the default; up to 1.7× faster than V0

OpenAI itself wrote that it unlocked capabilities that had been hard to draw out through prompt engineering alone

The first commercialization of the vector DB as a standalone product category. Triggered the market formation of Weaviate, Qdrant, Chroma and Milvus

Revealed the combination of policy and value networks with Monte Carlo tree search. Part of the lineage that combines search and learning