KAT-Dev
KAT-Dev is a chat model from Kwaipilot, released September 15, 2025. KAT-Dev is an open-weights chat model.
by Kwaipilot
Best for
Ways to use KAT-Dev in osFoundry
Connect with your own key (BYOK)
Open the key dialog and paste your Kwaipilot API key. osFoundry discovers KAT-Dev 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
KAT-Dev 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.
KAT-Dev vs similar models
| Model | Org | Params | Context | Input price | Self-host |
|---|
| KAT-Dev | Kwaipilot | — | — | Free (local) | Yes |
| soccana | Adit-jain | — | — | Free (local) | Yes |
| NeoBERTugues | lorenzocc | — | — | Free (local) | Yes |
| electra-tiny | bakirgrbic | — | — | Free (local) | Yes |
Licence
Unspecified — Licence terms not specified — verify the upstream model card before commercial use.
Check upstream documentation.
Frequently asked about KAT-Dev
Is KAT-Dev free to use?
KAT-Dev 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 KAT-Dev 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 KAT-Dev locally?
Yes. KAT-Dev is open-weights and runs locally on a workstation GPU. osFoundry's local runtime handles model loading, quantisation, and routing.
What is KAT-Dev best at?
KAT-Dev is well-suited to text generation.
How do I use KAT-Dev in osFoundry?
Paste your Kwaipilot API key in the key dialog (or deploy the open weights for self-hostable models), assign KAT-Dev to a Maestro role in the Pipeline tab, then use it in chat, Room Apps via invokeAI, or your own apps.
Published by Kwaipilot on September 15, 2025. Source: https://huggingface.co/Kwaipilot/KAT-Dev