Jack Dorsey's Block announced an AI model called Dessa that's trained "from scratch on nothing but human conversation," and to show off the model, Block shared chats it has had with humans that...
The update "Jack Dorsey’s Block made an AI model that talks to you like an awkward new friend" focuses on high-performance retrieval architectures, vector indexing, and enterprise RAG systems. Documented by The Verge AI, this release addresses the engineering challenges of reducing retrieval latency, improving precision over massive enterprise corpora, and eliminating hallucination in production knowledge engines.
As enterprise generative AI matures beyond naive vector lookup, production retrieval pipelines are adopting hybrid search topologies that blend dense semantic embeddings with sparse BM25 lexical matching, contextual document chunking, and cross-encoder reranking algorithms.