No, libsql added custom vector search directly into their library, while sqlite-vec is a separate SQLite extension.
The libsql vector feature only works in libsql, sqlite-vec works in all SQLite versions. The libsql vector feature works kindof like pgvector, while sqlite-vec works more like the FTS5 full text SQLite extension.
I'd say try both and see which one you like more. sqlite-vec will soon be a part of Turso's and SQLite Cloud's products.
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Is this also what turso uses in their "AI feature"?
No, libsql added custom vector search directly into their library, while sqlite-vec is a separate SQLite extension.
The libsql vector feature only works in libsql, sqlite-vec works in all SQLite versions. The libsql vector feature works kindof like pgvector, while sqlite-vec works more like the FTS5 full text SQLite extension.
I'd say try both and see which one you like more. sqlite-vec will soon be a part of Turso's and SQLite Cloud's products.
Turso's version: https://turso.tech/vector