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Training & fine-tuning

Transformer Lab

One app for downloading, chatting with, fine-tuning and testing AI models on your own hardware.

New this week

What it does

Transformer Lab is an open-source workspace for working with AI models. You can download popular open models, chat with them, fine-tune them on your own data and measure how well they perform. It also supports image generation and text-to-speech models.

The individual edition runs on one computer, and the README says no data leaves your machine. A teams edition sends training jobs to GPU clusters or cloud providers. You use it through a web interface in your browser.

Who it's for

Researchers and hobbyists who want to train and experiment with AI models without stitching many tools together.

Can I use it without coding?

With some setup. You run an install script, start it and open it in your browser; it needs an Apple Silicon Mac or a computer with a suitable graphics card. New to this? Start here.

Can I run it?

Cost
FreeNothing to pay or sign up for.
Runs on
Mac, Linux, Windows, Server
Computer
Works best on a powerful computer or one with a graphics card (GPU)
Privacy
Runs on your own device: your data stays with you
API key
Not needed

Try it

  1. Check that you have an Apple Silicon Mac, or a Linux or Windows computer with a suitable graphics card.
  2. Run the install script from the README, then start Transformer Lab.
  3. Open it in your web browser and download a model to try.

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page. Copies with similar names exist for many popular projects.
  • License (AGPL-3.0): Free to use; if you run a changed version as an online service, you must share your source code.
  • More on staying safe

Where people are talking about it