Vanna.AI is an open-source Python framework that enables natural language queries against databases using AI. Users ask questions in plain English and Vanna generates accurate SQL queries, executes them, and returns results with visualizations. Built on large language models fine-tuned on SQL patterns.
Features
✦Natural language to SQL: ask questions in plain English and get accurate SQL
✦Self-improving AI: learns from each query-result pair to improve accuracy
✦Multi-database support: works with Snowflake, BigQuery, PostgreSQL, SQL Server, and 20+
✦Auto-generated visualizations: AI selects the best chart type for each result
✦Schema-aware: understands your database schema, relationships, and business terminology
✦Open source: Apache 2.0 license with 10,000+ GitHub stars
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