What is Kiln?
Kiln is a desktop app and open-source library for teams building AI systems. It covers RAG, tools and sub-agents, evals with LLM-as-judge, synthetic data, fine-tuning and prompt optimization across many models. The app is a free download for macOS, Windows and Linux.
Key facts
- Pricing
- Free
- Free plan
- Yes
- Category
- Coding
- Website
- https://kiln.tech/
- Listing updated
- Nov 11, 2026
Kiln FAQ
What is Kiln?
Kiln is a desktop app and open-source library for teams building AI systems. It covers RAG, tools and sub-agents, evals with LLM-as-judge, synthetic data, fine-tuning and prompt optimization across many models. The app is a free download for macOS, Windows and Linux.
Is Kiln free?
Yes. Kiln lists a free plan. Pricing: Free.
What are alternatives to Kiln?
Coding alternatives to Kiln include GitHub Copilot, Together AI, Baseten, Straion, Cursor and Pinecone.