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What is Vellum?

Vellum is an open-source personal AI assistant that learns from your behavior and adapts to your life. Built by a team focused on privacy and user agency, Vellum solves the problem of generic AI assistants that lack context and memory. Its core capabilities include persistent memory across four types (episodic, semantic, procedural, emotional), multi-platform support (web, macOS, iOS, CLI), and autonomous task execution. Vellum can summarize Slack threads, manage your calendar, clean your inbox, and even remind you of personal commitments. It learns your preferences over time, such as avoiding TypeScript or not pinging you before 9am. The tool is designed for individuals who want a deeply personalized assistant that respects their privacy. It fits workflows of busy professionals, developers, and anyone overwhelmed by digital clutter. Vellum offers both self-hosted and managed options, ensuring data stays under your control.

AI Tool Review Summary

Performance Score

4.5/5

Content/Output Quality

High, consistent, and context-aware

Interface

Clean and minimal with a focus on conversation

AI Technology
LLMNLPMemory Systems
Purpose of Tool

To provide a personal AI assistant with persistent memory that learns and acts autonomously across platforms.

Compatibility

Web app, macOS, iOS, and CLI; integrates with email, calendar, Slack, and more.

Pricing

Open-source with self-hosted option; managed platform with freemium tiers

Features

Features with the highest value for users are highlighted here.

Open-source architecture

Persistent memory across sessions

Multi-platform support (web, macOS, iOS, CLI)

Autonomous task execution

Privacy-first design with local data storage

Adaptive learning from user behavior

Slack and email integration

Customizable autonomy levels

How It Works

1

Hatch your assistant

Name your AI and it becomes available across web, macOS, iOS, and CLI instantly.

2

Teach it your patterns

Correct its actions and it learns your preferences, avoiding repeated mistakes.

3

Let it act autonomously

Set autonomy levels from strict to full access, and it will handle tasks proactively.

4

Rely on persistent memory

It remembers your life through episodic, semantic, procedural, and emotional memory types.

Who Is It For?

Busy professionals

Developers

Remote teams

Privacy-conscious users

Freelancers

Students

Project managers

Small business owners

Tech enthusiasts

Parents

Pricing

Self-Hosted

$0/free
  • Full control
  • Open-source
  • Local memory

Free

$0/monthly
  • Basic memory
  • Web & mobile access
  • Limited actions
Popular

Pro

$19/monthly
  • Unlimited memory
  • All platforms
  • Advanced autonomy

Enterprise

Custom/monthly
  • Dedicated support
  • Custom integrations
  • On-premise deployment

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Pros & Cons

Pros

  • Deeply personalized learning that improves over time.
  • Strong privacy protections with local data control.

Cons

  • Requires significant initial setup and trust-building.
  • May feel intrusive to users uncomfortable with AI autonomy.

FAQs

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Rating

5.0

Pros

Cons

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