pg_bm25/ParadeDB author here. What we're doing is building an opinionated alternative within PostgreSQL. If you are not using Postgres, or want your system to be separate, Elastic is still the best choice and will likely remain so.
Other people have brought up great points for why or why not to switch. Our vision for this is that ParadeDB is not merely "better" than Elastic, but rather different. Elastic will never be a PostgreSQL database, and we'll never be a NoSQL search engine. If you want one or the other, you'll pick either ParadeDB or Elastic.
Other people have brought up great points for why or why not to switch. Our vision for this is that ParadeDB is not merely "better" than Elastic, but rather different. Elastic will never be a PostgreSQL database, and we'll never be a NoSQL search engine. If you want one or the other, you'll pick either ParadeDB or Elastic.