← Wednesday, September 30, 2026DatabasesDeep dive

Jev extensions bring typed plain-English classification to DuckDB

duckdb.org by Geertjan Wielenga, Gábor Szárnyas 7 min read Editor score 7/10

Jev returns typed answers and probabilities, and a community DuckDB extension reportedly classifies about 1,000 rows in roughly ten seconds. The approach offers a practical alternative to LIKE filters, per-row chat calls or building a classifier for some data tasks.

What
Jev is a model that returns typed answers and calibrated probabilities instead of generated sentences.
How
Its Noul, Choice, and Score answers correspond to SQL predicates, enums, and ordered values; questions in a request run in parallel.
Why it matters
DuckDB extensions let engineers apply plain-English classification and scoring to rows without training a classifier or parsing generated text.

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