txtai is an all-in-one embeddings database for semantic search, LLM orchestration and language model workflows. Embeddings databases are a union of vector indexes (sparse and dense), graph networks and relational databases. This enables vector search with SQL, topic modeling, retrieval augmented generation and more. Semantic graphs were introduced in late 2022 with txtai 5.0, right before the start of the LLM era. This article picks back up where that work left off, opening a new frontier in sem...