Lindy vs Vellum

Lindy

• Teams that work in Slack and want one shared AI teammate
• Recurring reports, briefs and follow-ups pulled from connected tools
• Gmail users who want labeled mail and pre-drafted replies

Vellum

• People who want one assistant that remembers them across devices and chat apps
• Handing off email triage, calendar work and recurring background tasks
• Users who want to inspect or self-host the assistant's open-source runtime

Lindy

• There is no ongoing free plan: the $50 of free credits lasts 7 days, after which paid usage starts at $29.99 per user per month.
• Anyone who uses Lindy takes a paid seat, including people who @mention it in Slack; those joining through Slack get a one-time 7-day trial first.
• Monthly credits do not roll over, and Lindy pauses credit-using actions when the shared pool runs out.
• SSO, SCIM, audit logs and HIPAA compliance with a signed BAA are limited to Enterprise.

Vellum

• The Base plan is free to host, but model usage, web search and image generation are paid for in prepaid credits at $1 per credit.
• Included monthly usage does not roll over, and pay-as-you-go credits expire twelve months after purchase.
• The docs describe the Windows app as a dev build tied to Vellum's development environment, and no Linux desktop client is shipped.
• The iOS and Android apps are clients for a cloud assistant; they do not run a local assistant on the phone.

Lindy

Shared teammate in Slack

A whole team shares one Lindy, summoned with an @mention in Slack channels and threads. It can also be reached by iMessage, by email and in the browser.

Integrations and MCP

Connects to Gmail, Slack, Notion, HubSpot and more than 1,000 other apps, and can use any MCP server to reach tools that have no built-in integration.

Meeting recording and notes

Records meetings and writes notes into a shared library with folders that teammates can query later. It also handles scheduling, prep and follow-up.

Scheduled routines

Recurring work such as a morning brief, a Monday report or a Friday nudge can be set up in a sentence and run on a schedule.

Skills and editable memory

Comes with more than 40 skills, including research, data analysis and slide decks. New skills can be saved for the whole team, and its memory lives in plain files you can edit.

Approvals

Actions with outside impact, such as sending an email or updating a ticket, wait for approval. Read-only lookups from approved sources do not.

Vellum

Long-term memory

The assistant keeps facts, preferences and people in a personal knowledge base and recalls them across conversations. On your own machine the workspace is plain-text files plus a SQLite database.

Skills for your work tools

Built-in skills and OAuth integrations cover Google Workspace, Outlook, Slack, Notion, Linear, GitHub, HubSpot, Asana and Todoist. More skills come from a catalog or are written yourself.

Permission prompts

Sensitive actions such as file access, shell commands or emailing a new contact show an Allow or Deny prompt with a risk badge until you create a trust rule for them.

One assistant on every channel

The same identity, memory and schedules are available from the web, Mac, Windows, iOS and Android apps, a CLI, Telegram, Slack, email, voice and phone calls.

Computer and browser control

The desktop app adds voice input and computer control, and a Chrome extension lets the assistant read open tabs, fill in forms and act on the page in front of you.

Cloud, local or self-hosted

Run it in Vellum Cloud, locally on a Mac or Windows PC, or self-hosted on a Linux host or your own Google Cloud project, bringing your own model API key.

Lindy

• Free$0

  $50 in credits that last 7 days, with no credit card required. Paid usage starts after that.

• Team$29.99

  per user / month, for 3,000 credits each

  Credits pooled across the team, larger monthly bundles such as 15,000 credits for $99.99, top-ups at $10 per 1,000, model choice and computer use.

• EnterpriseCustom

  Everything in Team, plus HIPAA compliance with a signed BAA, SSO and SCIM, audit logs, custom credits and billing, and dedicated support.

Vellum

• Base$0

  Free forever: a Small cloud machine (1 vCPU, 2 GiB RAM), 6 GiB of storage and managed model access paid for with pay-as-you-go credits.

• Self-hosted$0

  The open-source runtime on your own Mac, Windows PC, Linux host or GCP project, with your own model API key and no platform or machine fees.

• Mighty$30

  per month

  Small machine, 10 GiB of storage and a monthly Mighty Usage allowance. Leaves out the custom subdomain, static IP and priority support.

• CustomFrom $50

  per month

  Pick a machine size, storage tier and optional usage bundle yourself. The minimum is a Medium machine with 10 GiB and no usage bundle.

• Super$100

  per month

  Medium machine (2.5 vCPU, 5 GiB), 30 GiB of storage and Super Usage, plus an assistant email, custom subdomain, static IP and priority support.

• Ultra$200

  per month

  Large machine (4 vCPU, 8 GiB), 60 GiB of storage and Ultra Usage, with the same assistant email, subdomain and support as Super.