ReFusion
ReFusion is a chat model from GSAI-ML, released December 10, 2025. ReFusion is an open-weights chat model.
by GSAI-ML
Best for
Ways to use ReFusion in osFoundry
Connect with your own key (BYOK)
Open the key dialog and paste your GSAI-ML API key. osFoundry discovers ReFusion automatically — assign it to a Maestro role (router, direct, orchestrator, or fallback) in the Pipeline tab and it is live in every chat. Your key, your provider account — no token markup.
Deploy a dedicated endpoint
ReFusion is open-weights — run it locally for free, or deploy a dedicated GPU endpoint in your workspace for reserved capacity with no rate limits.
Use it in a Room App
Room Apps declare AI features in their manifest, then call them with invokeAI:
import { invokeAI } from '@osfoundry/app-sdk'
// 'summarize' is an AI feature declared in your app manifest.
const result = await invokeAI('summarize', userText)
Call it from your own apps
Once a model is wired into your workspace you can host it as an API and reach it from your own services, scripts, or CI — outside osFoundry.
ReFusion vs similar models
Licence
Unspecified — Licence terms not specified — verify the upstream model card before commercial use.
Check upstream documentation.
Frequently asked about ReFusion
Is ReFusion free to use?
ReFusion is free to run locally on your own hardware. Hosted access through osFoundry is metered (input Free (local), output Free (local)). You can switch between local and hosted at any time.
Can I use ReFusion commercially?
Commercial use is allowed with conditions. Licence terms not specified — verify the upstream model card before commercial use. Check upstream documentation.
Can I run ReFusion locally?
Yes. ReFusion is open-weights and runs locally on a workstation GPU. osFoundry's local runtime handles model loading, quantisation, and routing.
What is ReFusion best at?
ReFusion is well-suited to text generation.
How do I use ReFusion in osFoundry?
Paste your GSAI-ML API key in the key dialog (or deploy the open weights for self-hostable models), assign ReFusion to a Maestro role in the Pipeline tab, then use it in chat, Room Apps via invokeAI, or your own apps.
Published by GSAI-ML on December 10, 2025. Source: https://huggingface.co/GSAI-ML/ReFusion