TLDR Tech / Data
Semantic Layer vs. Text-to-SQL: 2026 Benchmark Update
dbt Labs compares two approaches for letting AI/LLMs query data: raw Text-to-SQL (LLM directly generates SQL against tables) versus querying through the dbt Semantic Layer (which provides centrally defined, governed metrics and business logic). Even with the most advanced LLMs, the dbt Semantic Layer delivers higher accuracy, consistency, and governance by giving the model clean, pre-defined business metrics.
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