qwen3.5-4b-secretive
Built by fosterdill, qwen3.5-4b-secretive is a 4 billion parameter chat model. qwen3.5-4b-secretive is an open-weights chat model with roughly 4 billion parameters.
by fosterdill · 4B parameters
Best for
- low-latency chat and routing
- request routing and triage
- text classification
Ways to use qwen3.5-4b-secretive in osFoundry
Connect with your own key (BYOK)
Open the key dialog and paste your fosterdill API key. osFoundry discovers qwen3.5-4b-secretive 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
qwen3.5-4b-secretive 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.
What hardware can run qwen3.5-4b-secretive
qwen3.5-4b-secretive runs on a single 16GB consumer GPU (~3 GB VRAM with KV-cache headroom). Full-precision inference fits on a single H100 80GB at FP16 precision (~10 GB).
qwen3.5-4b-secretive vs similar models
Licence
Unspecified — Licence terms not specified — verify the upstream model card before commercial use.
Check upstream documentation.
Frequently asked about qwen3.5-4b-secretive
Is qwen3.5-4b-secretive free to use?
qwen3.5-4b-secretive 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 qwen3.5-4b-secretive commercially?
Commercial use is allowed with conditions. Licence terms not specified — verify the upstream model card before commercial use. Check upstream documentation.
How much VRAM does qwen3.5-4b-secretive need?
Approximately 3 GB at Q4 quantisation, or 10 GB at full FP16 precision. Fits on a single 24GB consumer GPU.
Can I run qwen3.5-4b-secretive locally?
Yes. qwen3.5-4b-secretive is open-weights and runs locally on a workstation GPU. osFoundry's local runtime handles model loading, quantisation, and routing.
What is qwen3.5-4b-secretive best at?
qwen3.5-4b-secretive is well-suited to low-latency chat and routing, request routing and triage, text classification.
How do I use qwen3.5-4b-secretive in osFoundry?
Paste your fosterdill API key in the key dialog (or deploy the open weights for self-hostable models), assign qwen3.5-4b-secretive to a Maestro role in the Pipeline tab, then use it in chat, Room Apps via invokeAI, or your own apps.
Published by fosterdill on April 25, 2026. Source: https://huggingface.co/fosterdill/qwen3.5-4b-secretive