| Compared on | Kaer | Lindy |
|---|---|---|
| What it is | One AI operator for a business: email, calendars, business software and its own sandboxed browser. | “An AI employee for your whole team.” lindy.ai |
| Free to start | Starter is free: 20 messages every day, no card. | $50 of credits that last 7 days, no card. lindy.ai/pricing |
| Paid plans | Core $15, Pro $43 or Max $99 a month, each with included credits (kaer.ai/pricing). | From $29.99 a month for each active user, with 3,000 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). | “Lindy can drive the browser like a person would (Pro and up).” lindy.ai |
| 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 1,000+ 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”.
Kaer vs Lindy: common questions
Is Kaer a Lindy alternative?
Yes, for the same job: an AI employee 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 $15 a month; Lindy's start at $29.99 a month per active user (Lindy's pricing page, read 3 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 says it can drive the browser on its Pro plan and up. Kaer runs each job on its own isolated machine with a browser and desktop, and the machine is destroyed when the run ends.
Against the others
01
Kaer vs Zapier Agents
02Zapier Agents act through Zapier's app integrations. Kaer works the software itself, including sites with no API. Price, limits and fit, from each vendor's pages.
Kaer vs Vellum
Vellum is an open-source personal assistant that can run on your Mac. Kaer is an AI employee for a business. Price, where it runs and approvals, compared.
Hand it one job.
The fastest way to compare is to give Kaer something you would rather not do today.