Kiln AI

Kiln AI is an open-source platform for building high-quality LLM datasets through human-in-the-loop fine-tuning and evaluation.

Kiln AI streamlines the transition from prompt engineering to production-grade models. It centralizes the development lifecycle (data collection, synthetic data generation, and side-by-side human evaluation) into a single local environment. By integrating directly with providers like Ollama and OpenRouter, Kiln allows teams to refine datasets for specific tasks and export them for fine-tuning on platforms like Snowflake or Fireworks. It is built for developers who need verifiable accuracy rather than stochastic guesswork.

https://getkiln.ai