# AI Toolkit (Ostris)

All-in-one trainer for LoRAs on diffusion and video models (FLUX, Wan and more). AI Toolkit (Ostris) is free, with no paid plan attached, at github.com.

## Facts

- **Pricing tier:** Free
- **Works on:** CLI, Self-hosted, Web
- **Works in browser:** No

## Capabilities

- All-in-one trainer for LoRAs on diffusion and video models (FLUX, Wan and more)
- Web UI and config-file workflows, runs on consumer GPUs
- MIT licensed

## FAQ

### What is AI Toolkit (Ostris)?

AI Toolkit (Ostris) is listed under Fine-Tuning & Training Frameworks, in the AI Models & Local Execution category on Flocci AI Tools. All-in-one trainer for LoRAs on diffusion and video models (FLUX, Wan and more). It is free, with no paid plan attached, and it lives at github.com.

### Is AI Toolkit (Ostris) free?

AI Toolkit (Ostris) is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 397 entries on Flocci AI Tools with no upgrade path built in.

### Can I use AI Toolkit (Ostris) in a browser, or is there an app?

AI Toolkit (Ostris) needs to be installed or self-hosted — it doesn't run in a browser tab. It is available on the command line, self-hosting and the web.

### What can AI Toolkit (Ostris) do?

AI Toolkit (Ostris) does 3 things the catalog singles out: All-in-one trainer for loras on diffusion and video models (flux, wan and more); web ui and config-file workflows, runs on consumer gpus; mit licensed.

### What is the best free alternative to AI Toolkit (Ostris)?

LLaMA-Factory is the closest free alternative: it sits in the same Fine-Tuning & Training Frameworks sub-category and is free. Axolotl, LitGPT and ms-swift (ModelScope) also start free. The full list is on the alternatives page.

## Related

- [AI Toolkit (Ostris) alternatives](https://aitools.flocci.in/alternatives/ai-toolkit-ostris)
- [Fine-Tuning & Training Frameworks](https://aitools.flocci.in/category/ai-models-local-execution/fine-tuning-training-frameworks)
- [Best free AI fine-tuning and training frameworks](https://aitools.flocci.in/best/best-fine-tuning-training-frameworks)
---

Source: Flocci AI Tools — https://aitools.flocci.in/tool/ai-toolkit-ostris

Facts last verified: October 2026