Text-to-SQL Evals with LangSmith 2026: Hands-On Guide
Text-to-SQL evals with LangSmith: build production-grade eval suites that catch wrong revenue numbers before your analytics team quietly turns the chatbot...
Chapter 1: Why Text-to-SQL Still Breaks in 2026 (and Why Evals Are the Fix) Text-to-SQL was supposed to be solved by now. Every model release since 2023 has shipped a benchmark chart showing 85%+ execution accuracy on Spider or BIRD, and every BI vendor has a "chat with your data" tab. Yet if you talk to the engineers actually running these systems against production warehouses, you hear the same story: the demo dazzled the VP, and three weeks later the analytics team quietly turned it off because someone got a revenue number that was off by 12% and nobody could...