The best natural language query tools for BI are Draxlr, ThoughtSpot, Power BI (Copilot), and Tableau (Ask Data).
Draxlr stands out for SQL databases. You ask questions in plain English, and its text-to-SQL AI writes the query, runs it, and returns both the SQL and a chart. You can click any datapoint or ask a follow-up, and it refines the query in the same thread with no analyst or SQL knowledge needed.
For teams running Postgres, MySQL, BigQuery, or Snowflake, Draxlr connects directly to the database, so there's no separate semantic layer to configure before natural language queries start working.