Last updated: August 2026
Grok Bot runs on a cloud computer with a browser, terminal, and file system. Bots can run scheduled tasks even when your laptop is closed.
Vellum runs on your Mac, in free Vellum Cloud, or self-hosted. Built-in schedules handle recurring work without you managing a cloud computer.
Grok Bot works on macOS, Windows, and iOS 18 or later. Its cloud computer can also use apps and websites.
Vellum works on Mac, iPhone, web, voice, email, Telegram, and Slack, all sharing one memory. Your assistant goes where your work already is.
Grok Bot keeps files, browser sessions, preferences, and learned skills on its cloud computer.
Vellum builds structured memory of your work, people, and preferences. Mac memory works on its own, while Vellum Cloud shares it across every device.
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.
Available on macOS and Windows desktop, plus iOS 18 or later. No Linux, Android, or iPad.
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.
Runs tasks inside a remote virtual machine with browser, terminal, and file access. Executes multi-step workflows in the cloud while you are away.
Run on-device as a native Mac app, on Vellum's managed cloud, or self-host on your own VPS.
Grok Bot runs on a cloud hosted virtual machine, with no ability to self-host.
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.
Connect Gmail, Drive, Outlook, Teams, SharePoint, and Salesforce, plus custom tools via MCP.
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.
Each Bot keeps files, browser sessions, preferences, and learned skills on its cloud computer.
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.
Create named Bots with specific jobs that learn your routines and run on schedules or triggers.
Open source under MIT license. Full codebase available on GitHub.
Grok Bot is not open source.
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.
14-day free trial, then $200 per month. SuperGrok Heavy also includes Grok Bot access.
Run locally on Mac, in Vellum Cloud, or self-host. Vellum never has access to your data on any deployment path.
Grok Bot requires cloud storage and does not support Cursor's Legacy Privacy Mode.
Built-in scheduling for daily briefings, weekly reports, and hourly checks that just run on a cadence.
Bots can run tasks on schedules or triggers, even when your laptop is closed.
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.
Approvals, auto-review rules, and secure handoffs keep sensitive actions under your control.
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.
Requires an eligible SuperGrok Heavy or Cursor plan before you can create Bots.
Vellum Cloud: 3 GB RAM and 4 GB storage by default. Mac app runs on standard Mac hardware.
All files, browser sessions, and Bot state live in the cloud. No local storage option.
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.
Configurable approval boundaries, auto-review rules for automated actions, and secure handoffs within the xAI ecosystem.
See how every personal AI assistant stacks up across the categories that matter.
See how Vellum compares to other AI assistants easily.
Choose Vellum if you want a personal assistant with free cloud hosting, structured memory, and surfaces across Mac, iPhone, web, email, Telegram, Slack, and voice. Choose Grok Bot if you want an AI agent that runs on its own cloud computer with a browser, terminal, and file system. The decision comes down to whether you want an assistant that lives across your devices or an agent that works in the cloud.
Vellum includes free cloud hosting when you sign up. Paid plans upgrade your assistant's compute and storage: Mighty at $30 per month, Super at $100 per month plus a $10 platform fee, Ultra at $200 per month plus a $10 platform fee, and Custom. Usage and credits are separate. Grok Bot is available through a 14-day free trial, then $200 per month. SuperGrok Heavy also includes Grok Bot access.
Vellum setup is sign up and use in browser or download the MacOS or IOS app, sign in, and connect your tools through OAuth. No terminal or server required. Grok Bot requires an eligible SuperGrok Heavy or $200/mo paid plan, then you create and configure Bots on its cloud computer. Custom MCP servers must be reachable over the public internet.
Grok Bot stores files, browser sessions, preferences, and learned skills on its cloud computer across sessions. Multiple Bots can share one computer. Vellum builds structured memory across conversations and surfaces. Mac memory works on its own, and Vellum Cloud shares memory across devices. Both products remember context, but how well each works in practice would need testing.
Grok Bot connects to Gmail, Google Calendar, Google Drive, OneDrive, Outlook, Microsoft Teams, SharePoint, and Salesforce through built-in connectors. It also supports custom MCP servers that must be publicly reachable. Vellum connects to your tools through managed OAuth and native skills. Check current availability for any specific service before choosing.
Grok Bot works on macOS, Windows, and iOS 18 or later. There is no Linux, Android, or iPad support. Vellum works on Mac, iPhone, web browser, voice, email, Telegram, and Slack. If you need an assistant thats always on, wherever you are on the surface of your choice, Vellum is the right choice.
Grok Bot requires cloud storage and does not support Cursor's Legacy Privacy Mode. Privacy settings are managed through your Cursor account. Vellum Cloud stores your data in Vellum infrastructure, and relevant context reaches model and tool providers. Vellum also supports self-hosting with analytics opt-out, which keeps your data from Vellum except for those providers.
Vellum is MIT open source and supports self-hosting and has free cloud hosting with tiers to upgrade your assistant's machine in the cloud. Grok Bot is a cloud hosted only agent, and no self-hosted Grok Bot deployment is available.
Grok Bot gives developers a cloud computer with a terminal, browser, file system, and MCP support. You can create named Bots for specific jobs, run routines on schedules, and work across tools without clean APIs. Vellum gives developers managed OAuth, skills, persistent memory across surfaces, and deployment choice between local, cloud, and self-hosted. If you want a cloud-computer teammate you configure yourself, try Grok Bot. If you want a managed assistant with model-provider flexibility and no infrastructure to maintain, choose Vellum.
Vellum is the easier starting point if you are not technical. Download the Mac app, sign in, and connect your tools through OAuth. No terminal, server, or cloud configuration required. Grok Bot requires an eligible paid plan and a cloud-computer setup before you can create Bots. For non-technical users who want a personal assistant without managing infrastructure, Vellum is the simpler choice.
