| Compared on | Kaer | Manus |
|---|---|---|
| What it is | AI assistants for a business: email, calendars, business software and their own sandboxed browser. | “Less structure, more intelligence.” manus.im |
| Websites with no API | Its own browser and desktop on an isolated machine, destroyed when the run ends (kaer.ai/product/computer). | Cloud Browser, a browser in the cloud that Manus operates; you take over for verifications such as CAPTCHAs and SMS codes. manus.im docs: Cloud Browser |
| Your own browser | Work runs on Kaer's isolated machine, not on your computer. | Browser Operator: “Each task requires your explicit permission before Manus can control the browser.” trust.manus.im |
| Standing schedules | Workflows run on a schedule or on a trigger: approve once, then it runs, with a record of every step (kaer.ai). | Automations: a schedule “starts from time”; a triggered task runs on an event. manus.im docs: Automations |
Pick Manus if
- You want one agent for slides, websites and video as much as for business admin.
- You want it to drive the browser on your own computer, with your existing sign-ins (Browser Operator).
Pick Kaer if
- You want it to stop for your approval before an email, a post or a payment goes out, by default.
- You want a spend cap you set, with the work stopping at the ceiling.
- The work is a business's back office: enquiries, invoices, supplier portals, on a machine wiped after every run.
Kaer vs Manus: common questions
Is Kaer a Manus alternative?
Does Manus ask before it acts?
Against the others
Kaer and Lindy both sell an AI assistant. How they differ on price, websites with no API, approvals and building tools, from each vendor's own pages.
Zapier Agents act through Zapier's integrations; Kaer works the software, including sites with no API. Price, limits and fit, from each vendor's pages.
Vellum 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.
OpenAI folded Operator into ChatGPT agent, now succeeded by ChatGPT Work. Approvals, schedules and browser work, from OpenAI's own pages and Kaer's.
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.