fb5a501b
Released by zeras141a in 2025, fb5a501b is a 501 billion parameter chat model. fb5a501b is an open-weights chat model with roughly 501 billion parameters.
by zeras141a · 501B parameters
Best for
- complex multi-step reasoning
- agent orchestration with tool use
- long-document analysis and summarisation
Ways to use fb5a501b in osFoundry
Connect with your own key (BYOK)
Open the key dialog and paste your zeras141a API key. osFoundry discovers fb5a501b 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
fb5a501b 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 fb5a501b
fb5a501b runs on a multi-GPU setup or H200 141GB at Q4 (~301 GB VRAM with KV-cache headroom). Full-precision inference requires multiple H100/H200 GPUs at FP16 (~1203 GB).
fb5a501b vs similar models
Licence
Unspecified — Licence terms not specified — verify the upstream model card before commercial use.
Check upstream documentation.
Frequently asked about fb5a501b
Is fb5a501b free to use?
fb5a501b 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 fb5a501b 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 fb5a501b need?
Approximately 301 GB at Q4 quantisation, or 1203 GB at full FP16 precision. Requires multi-GPU at higher quantisation.
Can I run fb5a501b locally?
Yes. fb5a501b is open-weights and runs locally on a workstation GPU. osFoundry's local runtime handles model loading, quantisation, and routing.
What is fb5a501b best at?
fb5a501b is well-suited to complex multi-step reasoning, agent orchestration with tool use, long-document analysis and summarisation.
How do I use fb5a501b in osFoundry?
Paste your zeras141a API key in the key dialog (or deploy the open weights for self-hostable models), assign fb5a501b to a Maestro role in the Pipeline tab, then use it in chat, Room Apps via invokeAI, or your own apps.
Published by zeras141a on August 22, 2025. Source: https://huggingface.co/zeras141a/fb5a501b