Vellum
A platform to create, test, and deploy AI applications.
At a glance
Free + paid · Source review 2026-11-02- Price & billing
Free to download and start; Vellum Cloud plans from $30/month (Mighty), $100/month (Super), $200/month (Ultra) on the observed homepage.
- Free allowance
Free to download and start; Vellum Cloud plans from $30/month (Mighty), $100/month (Super), $200/month (Ultra) on the observed homepage.
- Best suited to
A personal, ownable AI assistant with long-term memory that works autonomously across devices, files and tools.
Fit is editorial guidance, not a measured result.- Platforms
Access: not separately verified. Operating systems not separately verified.
Published-source facts and editorial guidance. No product test is implied. Confirm current conditions before purchase.
No product screenshot is claimed for this listing. Use the official website ↗ to inspect the current interface.
What to know before choosing
Good fit
A personal, ownable AI assistant with long-term memory that works autonomously across devices, files and tools.
Limits and trade-offs
Autonomous actions need permission setup; high-stakes actions require explicit approval until marked trusted.
Plans and free allowances
Free to download and start; Vellum Cloud plans from $30/month (Mighty), $100/month (Super), $200/month (Ultra) on the observed homepage.
Evidence
Official Vellum homepage ↗ (reviewed 2026-11-02)
Official published page review; no authenticated product test
Dates: Last reviewed 2026-11-02. Last reviewed is the latest source or editorial review date; it is not a content-change date.
A closer look at Vellum
Vellum is an open-source personal AI assistant you own and customize, running locally on Mac or in Vellum Cloud, with long-term memory, cross-device access and autonomous actions across email, calendar, web, files and tools, free to download with paid cloud plans.
Editorial guidance based on published documentation. The workflow below is a suggested starting point, not a measured product result.
When to choose Vellum
- A user wants a personal AI assistant with long-term memory that takes real actions across files and tools.
- A Mac user wants a local-first, open-source assistant that can switch between OpenAI, Anthropic, Gemini or open weights via Ollama.
- A professional wants business work handled, such as pipeline review, CRM updates, lead enrichment and invoice chasing.
When to choose something else
- A user who wants a simple chat window that only acts on command, which Vellum explicitly contrasts itself with.
- A user unwilling to grant permissions or mark trusted actions for autonomous background work.
A practical starting workflow
- Download Vellum and start free, shaping how it talks and works for you from the start.
- Connect the tools it should manage, such as Google Workspace, Slack, Notion or your filesystem, and extend it with community plugins or custom skills.
- Set permissions, marking trusted actions so high-stakes steps like sending emails to new contacts or spending credits need approval until trusted.
- Let the assistant run recurring tasks in the background across every device, with the same memory, chats and schedules everywhere.
Check before committing
- High-stakes actions like sending emails to new contacts, modifying important files or spending credits need explicit approval until marked trusted.
- Cloud plans bundle dedicated compute, storage and credits; the local version runs on your own machine.
- This entry describes published homepage claims and does not test the assistant through use.
Common questions
What is Vellum?
Vellum is a personal, secure AI assistant that you fully own and customize. It runs locally on your machine or in the cloud, is available around the clock from any device, remembers you over time and handles work automatically.
What can a Vellum assistant do?
It can send emails, manage calendars, browse the web, create slides, write code, run deep research, monitor websites and execute recurring tasks in the background, with built-in skills for Google Workspace, Slack, Notion and your filesystem.
How much does Vellum cost?
Vellum is free to download and start. Vellum Cloud subscription plans start at $30 per month (Mighty), $100 per month (Super) or $200 per month (Ultra).
Is my Vellum data private?
By default the assistant runs locally, with conversation history, memory and credentials staying on your machine and never used to train models; Vellum is open-source so the code can be inspected.
What devices can I use Vellum on?
Vellum is native to Mac and accessible on iOS, Android, web app, voice, email, Telegram, Slack and terminal, sharing the same memory, tasks and schedules.
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Sources and checks
Last source review is not a date of product testing. No rating or test result is implied by inclusion. Check the current plan and terms before buying.