Vellum

Vellum is a personal AI assistant that remembers your preferences, works across web and messaging, and can act on connected accounts or pages you view.

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What Vellum is

Vellum is a personal AI assistant platform designed to live with a user over time, keep memory about preferences and context, and act across common channels and connected services. The homepage describes it as an assistant that knows you deeply, evolves alongside you, and belongs to no one else.

The product combines a cloud-hosted assistant experience with an open-source self-hosting option. It supports setup in minutes, can run on Vellum Cloud or on your own hardware, and is built to handle everyday tasks such as email triage, calendar briefings, web-page actions, voice conversations, and simple app-building workflows.

Features

Multi-type memory

Vellum keeps a personal memory system with multiple memory types so the assistant can remember preferences, routines, events, and context over time.

Self-improving skills

The assistant can learn from how you work and adapt its behavior, with skills that evolve alongside your preferences.

Multiple native channels

You can use Vellum across browser, Mac, iOS, Slack, Telegram, phone, email, and voice, so the assistant is available in the channels you already use.

Browser-based actions

The assistant can read pages, fill forms, and act on the page you are viewing using the browser extension workflow described in the docs.

Connected account workflows

Vellum can connect to email, Slack, Linear, X, and other services through setup or managed OAuth, then read, summarize, draft, and update content in those systems.

Permission-based control

The platform exposes trust controls, including Allow/Deny prompts for sensitive actions and user-defined trust rules for recurring access.

Use Cases

Morning planning
Use Vellum as a daily briefing assistant that brings together weather, calendar, and news before you start work.
Email management
Ask it to triage inboxes, summarize messages, and draft replies when you want help keeping up with email.
In-browser assistance
Use the browser workflow to read the page you are on, fill forms, and summarize content from open tabs.
Team workflow coordination
Let it handle task-oriented updates in connected tools such as Slack or Linear, including posting messages, moving tickets, and summarizing threads.
Light content and app creation
Use the assistant to create a basic web app or draft a blog post when you need a fast starting point for a project.

Pros and Cons

Pros

Combines memory, channels, and service integrations in one assistant.
Supports both cloud hosting and self-hosting.
Includes permission prompts and trust controls for sensitive actions.
Offers several native ways to interact, including browser, chat, voice, and messaging apps.
Pricing is usage-based and the docs say model-provider costs are passed through without markup on token usage.

Cons

Some capabilities require one-time setup before they can be used.
The assistant relies on cloud AI providers for model inference, so prompts and context are sent to an AI model to generate responses.
Paid usage is credit-based, so usage can pause if credits run out until more are added.

FAQ

What is Vellum?

Vellum is a personal AI assistant that lives in Vellum Cloud or on your own machine if you self-host. The docs say setup takes minutes and that you can get started without a credit card.

Can I self-host Vellum?

Yes. The pricing page says Vellum is open source and can be deployed on your own hardware, a VPS, or a private cloud. The docs also say you can migrate between platform hosting and self-hosting.

How does pricing work?

Vellum uses prepaid credits for usage-based actions such as inference, web search, image creation, and paid third-party APIs accessed through managed OAuth. Credits are consumed as the assistant uses them, and you can add more from Billing.

Where can I use it?

The docs list Mac, web, iOS, Slack, Telegram, phone, email, and voice among the available channels. The assistant can also use browser actions and connect to services such as email, Slack, Linear, and X when those skills are set up.

How does Vellum handle trust and permissions?

The docs describe sensitive actions as permission-based. File access, shell commands, and anything that touches your system or accounts prompt you to allow or deny, and you can set trust rules for standing permissions.

Quick Facts

Category: Personal AI assistant
Platform: Web, Mac, iOS, Slack, Telegram, phone, email, voice
Hosting: Vellum Cloud or self-hosted
Pricing shape: Free start plus paid Pro plan and pay-as-you-go credits
Source domain: vellum.ai
Notable workflow: Memory-driven assistant actions across connected accounts and the browser