Lumen vs Comet — an agentic AI without a new browser to install
Comet ships agentic AI inside its own browser. Lumen brings the same do-the-work-for-you capability to any browser you already use — with cited answers, connectors and opt-in local file access.
| Capability | Lumen | Comet |
|---|---|---|
| Cited answers | Yes | Yes |
| Agent mode (plans, acts, observes) | Yes — an adaptive step-by-step loop | Yes — in its own browser |
| Acts in your own browser | Yes — browser extension | Yes — its own browser only |
| Works on files on your machine | Yes — opt-in Local Agent | Browser-scoped |
| Connectors | Google, GitHub and the shared connector catalogue | Browser-scoped |
| Choose your own model | Yes — the full roster, or let the router choose | Tied to its app |
| Image generation | Yes | Varies |
| Price | See plans — free tier, no card | Bundled with subscription |
Competitor details above describe Comet as publicly documented at the time of writing. Vendors change their plans; check theirs before you decide.
Why people switch
People pick Lumen because it does not ask you to switch browsers. You get agentic multi-step work, browser automation (headless or in your own Chrome), 700+ connectors and opt-in access to files on your own machine — all from a normal web app at a clear $20/month.
Try it yourself
The free tier already includes agent mode, so you can judge the difference on your own question rather than ours.