Virtuoso Large
Released by Arcee AI in 2025, Virtuoso Large is an chat model. Virtuoso‑Large is Arcee's top‑tier general‑purpose LLM at 72 B parameters, tuned to tackle cross‑domain reasoning, creative writing and enterprise QA. Unlike many 70 B peers, it retains the 128 k...
by Arcee AI · 131K token context window
Best for
- low-latency chat and routing
- request routing and triage
- text classification
Ways to use Virtuoso Large in osFoundry
Connect with your own key (BYOK)
Open the key dialog and paste your Arcee AI API key. osFoundry discovers Virtuoso Large 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.
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.
Virtuoso Large vs similar models
| Model | Org | Params | Context | Input price | Self-host |
|---|
| Virtuoso Large | Arcee AI | — | 131K | $ 0.750 /1M | API only |
| Gemma 3n 4B | Google | — | 33K | $ 0.060 /1M | API only |
| Qwen3 30B A3B | Qwen | — | 41K | $ 0.090 /1M | API only |
| R1 0528 | DeepSeek | — | 164K | $ 0.500 /1M | API only |
Licence
Hosted — usage subject to provider terms — Hosted-only model — usage governed by the provider's API terms. Bring your own provider key.
No weights distributed; usage subject to provider terms.
Frequently asked about Virtuoso Large
How much does Virtuoso Large cost?
Virtuoso Large is metered at $ 0.750 /1M for input, and $ 1.20 /1M for output. Bring your own Arcee AI API key — osFoundry passes through provider pricing without markup.
Can I use Virtuoso Large commercially?
Commercial use is allowed with conditions. Hosted-only model — usage governed by the provider's API terms. Bring your own provider key. No weights distributed; usage subject to provider terms.
What is the context window of Virtuoso Large?
Virtuoso Large supports a 131K token context window.
Can I run Virtuoso Large locally?
No — Virtuoso Large is hosted only and accessed via the Arcee AI API.
What is Virtuoso Large best at?
Virtuoso Large is well-suited to low-latency chat and routing, request routing and triage, text classification.
How do I use Virtuoso Large in osFoundry?
Paste your Arcee AI API key in the key dialog (or deploy the open weights for self-hostable models), assign Virtuoso Large to a Maestro role in the Pipeline tab, then use it in chat, Room Apps via invokeAI, or your own apps.
Published by Arcee AI on May 5, 2025. Source: https://openrouter.ai/arcee-ai/virtuoso-large