FLUX.2-klein-base-9b-nvfp4
Released by black-forest-labs in 2026, FLUX.2-klein-base-9b-nvfp4 is a 9 billion parameter image-generation model. FLUX.2-klein-base-9b-nvfp4 is an open-weights image model with roughly 9 billion parameters.
by black-forest-labs · 9B parameters
Best for
Ways to use FLUX.2-klein-base-9b-nvfp4 in osFoundry
Connect with your own key (BYOK)
Open the key dialog and paste your black-forest-labs API key. osFoundry discovers FLUX.2-klein-base-9b-nvfp4 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
FLUX.2-klein-base-9b-nvfp4 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 FLUX.2-klein-base-9b-nvfp4
FLUX.2-klein-base-9b-nvfp4 runs on a single 16GB consumer GPU (~6 GB VRAM with KV-cache headroom). Full-precision inference fits on a single H100 80GB at FP16 precision (~22 GB).
FLUX.2-klein-base-9b-nvfp4 vs similar models
Licence
Unspecified — Licence terms not specified — verify the upstream model card before commercial use.
Check upstream documentation.
Frequently asked about FLUX.2-klein-base-9b-nvfp4
Is FLUX.2-klein-base-9b-nvfp4 free to use?
FLUX.2-klein-base-9b-nvfp4 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 FLUX.2-klein-base-9b-nvfp4 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 FLUX.2-klein-base-9b-nvfp4 need?
Approximately 6 GB at Q4 quantisation, or 22 GB at full FP16 precision. Fits on a single 24GB consumer GPU.
Can I run FLUX.2-klein-base-9b-nvfp4 locally?
Yes. FLUX.2-klein-base-9b-nvfp4 is open-weights and runs locally on a workstation GPU. osFoundry's local runtime handles model loading, quantisation, and routing.
What is FLUX.2-klein-base-9b-nvfp4 best at?
FLUX.2-klein-base-9b-nvfp4 is well-suited to image to image.
How do I use FLUX.2-klein-base-9b-nvfp4 in osFoundry?
Paste your black-forest-labs API key in the key dialog (or deploy the open weights for self-hostable models), assign FLUX.2-klein-base-9b-nvfp4 to a Maestro role in the Pipeline tab, then use it in chat, Room Apps via invokeAI, or your own apps.
Published by black-forest-labs on January 14, 2026. Source: https://huggingface.co/black-forest-labs/FLUX.2-klein-base-9b-nvfp4