Kiln
Free desktop app and open-source library for building AI systems with evals, RAG, agents, fine-tuning and synthetic data in one workbench.
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About Kiln
Kiln is listed in our evals & observability category and is aimed at builders. Free desktop app and open-source library for building AI systems with evals, RAG, agents, fine-tuning and synthetic data in one workbench. Pricing, as the maker states it: Source-available. Maturity: Mature. We last checked the official link on 2026-10-18.
Kiln at a glance
- Category: Evals & observability
- Built for: Developers and teams building with AI agents
- Pricing: Source-available (as the maker states it)
- GitHub: Kiln-AI/Kiln · 5,214 stars (as of Oct 21, 2026)
- Latest release: Kiln Desktop - v1.2.0, Sep 29, 2026
- Last commit: Oct 21, 2026
- Official site: kiln.tech
- Listed on AgentScout: Oct 18, 2026
Kiln FAQ
What is Kiln?
Free desktop app and open-source library for building AI systems with evals, RAG, agents, fine-tuning and synthetic data in one workbench.
How much does Kiln cost?
Kiln's pricing, as the maker states it: Source-available. Check the official site for current plans.
Where can I find Kiln's source code?
On GitHub at Kiln-AI/Kiln, which had 5,214 stars as of Oct 21, 2026. The latest release is Kiln Desktop - v1.2.0 (Sep 29, 2026).
What are alternatives to Kiln?
Similar tools include Opik, MCPJam Inspector, AgentEnv Framework, Openlayer MCP, Braintrust and Agenta.
Facts from our link-checked listing, the GitHub repository and the official site. See something wrong? Suggest an edit.
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