Best LLM for SQL generation in 2026: GPT-4o-mini wins clean Four LLMs, six SQL tasks, one PostgreSQL schema. GPT-4o-mini led with 9 wins over Claude Sonnet 4.5, GPT-4o, and Gemini 2.5 Flash. Here's the full breakdown. May 1, 2026 · 7 min read use-casesqlbenchmarks