Channels
iOS app with Home Screen widgets, native Mac app, web app, voice, email, Slack, Telegram, Microsoft Teams, and Discord, now an official channel with a setup wizard. Sent messages can be edited in place in Slack and Telegram. Every surface shares the same memory and identity.
Native messaging in WhatsApp, dedicated iOS and Android apps, and web interface at muse.ai.
Execution
Build me a habit tracker gets you a working, interactive app in the conversation. Read this page uses the browser extension to read your open tabs and act on the page you are looking at. Call the dentist and reschedule places an actual phone call with its own voice.
Navigates websites via accessibility trees and executes terminal commands inside a Debian container.
Hosting
Run on-device as a native Mac app, on Vellum's managed cloud, or self-host on your own VPS.
Runs on an isolated Linux cloud virtual machine with persistent browser and Debian runtime.
Integrations
Native agent skills plus 1-click integrations with 50+ services through managed OAuth, including native Calendly and Eventbrite. Your assistant acts in real services without you touching tokens or API keys.
Integrates with email, calendar, Instagram, and Stripe Link for single-use virtual card checkouts.
Memory
Vellum builds a structured memory of your projects, people, and preferences automatically, across every surface. It sharpens with every conversation and correction, and there is nothing to configure: no files to curate, no engine to pick, no embedding provider to wire up.
Tracks everyday goals, preferences, and tasks across chat sessions inside Meta cloud storage.
Modularity
Builds its own skills, learns your tone, and adapts based on what you reward and correct. Install new skills from a growing library, or just ask and it figures out a way.
Spins up subagents for web tasks and dynamically writes custom tools for missing workflows.
Open Source
Open source under MIT license. Full codebase available on GitHub.
Muse is a proprietary closed-source service with no public code repository or self-hosting capability.
Pricing
Free Base plan with free credits to start. Paid plans from $30/mo (Mighty), $100 (Super), and $200 (Ultra) with pay-as-you-go credits, configurable compute and storage, and your assistant's own email and subdomain on higher tiers.
Free tier for everyday personal tasks and basic goal management, with paid subscriptions for higher compute.
Privacy
Run locally on Mac, in Vellum Cloud, or self-host. Vellum never has access to your data on any deployment path.
All virtual machine data and conversations are processed on Meta cloud servers with model training opt-outs.
Schedules
Built-in scheduling for daily briefings, weekly reports, and hourly checks that just run on a cadence.
Runs persistent background routines and cron jobs inside the VM to track ongoing goals.
Security
Credentials live in an isolated vault and never enter the model layer, so prompt injection can't exfiltrate your keys. Every sensitive action asks permission with a risk badge before it runs, and guardian approvals land in one inbox.
Host-side Sentinel supervisor isolates credentials in authd and blocks untrusted network egress.
Setup
No terminal, no API keys, no daemon. Voice-first onboarding is the default: your first experience is speaking, not configuring. Free, no credit card, up in minutes.
Quick sign-in via mobile number or email with instant WhatsApp and mobile app access.
Storage
Vellum Cloud: 3 GB RAM and 4 GB storage by default. Mac app runs on standard Mac hardware.
Stores virtual machine files, browser sessions, and personal state inside Meta cloud storage.
Trust
Every sensitive action asks first with a risk badge, guardian approvals land in one inbox, and you can export or delete your data at any time. The trust model is written down in the docs.
eBPF kernel tracking revokes autonomous egress on untrusted data; sensitive actions require confirmation.
