Text-to-sql

Nov 10, 20266 min read

Fine-Tune Qwen3.5 9B for Text-to-SQL on an RTX 4090: 60% to 85% in 8 Minutes, for 6 Cents

We fine-tuned Qwen3.5-9B with Unsloth to turn questions into SQL, on a rented RTX 4090, and measured it on 200 questions it never saw: 60% right before, 85% after. Eight minutes of training, 8.8 GB of VRAM, about 6 cents. The script, the data, what it learned, and what part of the gain is only style.