| Compared on | Kaer | Lindy |
|---|---|---|
| What it is | AI assistants for a business: email, calendars, business software and their own sandboxed browser. | An AI teammate that connects to your tools and does work for the whole team. lindy.ai |
| Free to start | Starter is free: 2 messages every week, no card. | $50 of credits that last 7 days, no card. lindy.ai/pricing |
| Paid plans | Kaer Now $7.99, Core $15, Pro $43 or Max $99 a month, each with included credits (kaer.ai/pricing). | From $49.99 a month for each active user, with 5,000 credits each; top-ups at $10 per 1,000 credits. lindy.ai/pricing |
| Websites with no API | Its own browser and desktop on an isolated machine, destroyed when the run ends (kaer.ai/product/computer). | Lists “Computer use” among its paid-plan features. lindy.ai/pricing |
| Approvals | Stops before anything consequential: the message before it sends, the invoice before it is issued (kaer.ai/security). | “Nothing irreversible happens without your approval.” lindy.ai |
| When a tool is missing | Software Builder makes a working internal tool on a URL, or a pull request if you have engineers (kaer.ai/software-builder). | If a tool has no integration, Lindy can “build its own integration”. lindy.ai |
| A Kaer mailbox on paid plans, or your own over IMAP; either can run on your own domain (kaer.ai/product/mail). | “Connect 2 to 5 inboxes, depending on plan.” lindy.ai/pricing | |
| Integrations | Native connectors, and anything else through its own browser (kaer.ai/integrations). | “Gmail, Slack, Notion, HubSpot, and 1,500+ more”, plus MCP. lindy.ai |
Pick Lindy if
- Your team works in Slack threads and wants the assistant there: Lindy lists a “Slack-native teammate in threads + mentions”.
- You need HIPAA compliance with a signed BAA, which Lindy lists on its Enterprise plan.
- You want meeting recording and notes in the same product.
Pick Kaer if
- The work sits in websites with no API (supplier portals, booking systems, back-office tools) and you want it done on a machine wiped after every run.
- You want the missing tool built: a working internal tool on a URL the same day, or a pull request.
- You want a mailbox included, on your own domain, rather than only connecting existing inboxes.
- You'd rather not pay per person: Kaer's self-serve plans are priced per account, while Lindy bills “every active user in your workspace”.
Common questions
Is Kaer a Lindy alternative?
Yes, for the same job: an AI assistant that works across email, calendars and business software and stops for approval. Kaer's difference is where it works — its own isolated machine with a browser and desktop for the sites with no API — and that it can build the missing tool.
Which costs less?
Kaer's paid plans start at $7.99 a month (Kaer Now); Lindy's start at $49.99 a month per active user (Lindy's pricing page, read 21 October 2026). Both bill the work in credits, so the real cost depends on the jobs. Kaer's credit costs are published at kaer.ai/pricing/usage.
Can both work in websites that have no API?
Yes. Lindy lists computer use among its paid-plan features. Kaer runs each job on its own isolated machine with a browser and desktop, and the machine is destroyed when the run ends.
Other comparisons
01
Kaer vs Zapier Agents
02Zapier Agents work across Zapier's 9,000+ app integrations; Kaer also works sites with no API. Price, limits and fit, from each vendor's pages.
Kaer vs Vellum
03Vellum is an open-source personal assistant that can run on your Mac. Kaer is an AI assistant for a business. Price, where it runs and approvals, compared.
Kaer vs Manus
04Manus and Kaer both work in a cloud browser and run tasks on a schedule. Approvals, schedules and sites with no API, from each vendor's own pages.
Kaer vs ChatGPT agent (Operator)
05OpenAI folded Operator into ChatGPT agent, now succeeded by ChatGPT Work. Approvals, schedules and browser work, from OpenAI's own pages and Kaer's.
Kaer vs Relevance AI
Relevance AI is a platform for building teams of AI agents; Kaer is a ready AI assistant. Approvals, schedules and browser work, from each vendor's pages.
Hand it one job.
The fastest way to compare is to give Kaer something you would rather not do today.