Kiln
Build better AI systems with evals, RAG, agents, synthetic data, fine-tuning, and prompt optimization.

What is Kiln?
Kiln is a Fine-Tuning tool. Build better AI systems with evals, RAG, agents, synthetic data, fine-tuning, and prompt optimization. Kiln is free to use. It is available on macOS. It is aimed at developers, data scientists and ai teams.
Kiln helps build, evaluate, and optimize AI systems. It includes features like no-code synthetic data generation, fine-tuning, and dataset collaboration. Designed for teams to create reliable AI models.
Built for developers, data scientists, ai teams and product managers.
Features
No-Code Synthetic Data Generation
Generates synthetic data without coding.
Fine-Tuning
Adjusts models to specific tasks.
Dataset Collaboration
Enables team collaboration on datasets.
Cloud Or Local
Supports deployment in cloud or local environments.
Public API
Python Library Setup
SSO / SAML
Use cases
- Evaluate AI systems using built-in evaluations
- Optimize AI models with prompt optimization techniques
- Generate synthetic data for training models
- Collaborate on datasets with team members
- Deploy AI models in cloud or local environments
- Integrate with external services via public API
Popular use cases
Pros & cons
Pros
- Free plan available
- Public API available
- Integrates with Azure, OpenAI, Anthropic, Hugging Face
Cons
No documented limitations yet.
Pricing
Free.
| Plan | Price |
|---|---|
| Individual | Free |
| Enterprise | Custom |
Integrations
AI models
- GPT 4o
Developer & API
Public REST API available
- SDKs
- Python SDK, python SDK, Python
Open source· 5.1K stars· 381 forks
Security & compliance
- SSO
- SAML
As stated on Kiln's website — not independently verified by AiByts.
FAQ
What is Kiln?
Kiln is a Fine-Tuning tool. Build better AI systems with evals, RAG, agents, synthetic data, fine-tuning, and prompt optimization. Kiln helps build, evaluate, and optimize AI systems. It includes features like no-code synthetic data generation, fine-tuning, and dataset collaboration. Designed for teams to create reliable AI models.
Is Kiln free?
Yes, Kiln is free to use.
How much does Kiln cost?
Kiln offers 2 plans: Individual (Free) and Enterprise (Custom).
Does Kiln have an API?
Yes, Kiln offers a public REST API for building custom integrations.
What platforms does Kiln support?
Kiln is available on macOS.
Who should use Kiln?
Kiln is built for developers, data scientists, ai teams, product managers and machine learning engineers. Common uses: evaluate AI systems using built-in evaluations, optimize AI models with prompt optimization techniques, generate synthetic data for training models and collaborate on datasets with team members.
What does Kiln integrate with?
Kiln integrates with Azure, OpenAI, Anthropic and Hugging Face.
Is Kiln open source?
Yes, Kiln is open source.
What are the best alternatives to Kiln?
Similar tools on AiByts include Browserbase, Tinker, Respan, Pinecone and Respira for WordPress.
Kiln news & updates
Details are compiled from Kiln's website and public sources, last verified Oct 3, 2026. Features and pricing change — confirm on the official site before you buy.
Try Kiln
Free
Tags
- Synthetic Data
- Fine Tuning
- Prompt Optimization
- Dataset Collaboration
- Cloud Or Local
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