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ChatGPT agent acts in a remote browser, Perplexity Comet inside the user's browser and Google AI Mode through partners and live browsing. All three rely on the same public facts. One accurate website and consistent listings serve every agent.
How do the main AI agents reach your business?
They take different routes. ChatGPT agent works in a remote browser that OpenAI runs. Perplexity Comet runs inside the user's own browser. Google AI Mode's agentic features combine live web browsing with partner integrations to find availability and send the user to a booking step. Each route reaches your website or your listings in a different way, but all three rely on public information being clear and consistent.
What are the key differences?
| ChatGPT agent | Perplexity Comet | Google AI Mode (agentic) | |
|---|---|---|---|
| Where it runs | A virtual browser on OpenAI's side | The user's desktop browser | Google Search |
| How it acts | Clicks, types and fills forms; asks before consequential steps | Assistant can compare, fill forms and complete tasks in the user's session | Finds availability across partners and websites; links to the booking step |
| Typical sources | The open web, plus connectors the user enables | The pages the user has open and the web | Google's index, Maps, Knowledge Graph and booking partners |
| What it needs from you | Readable pages, usable forms | Readable pages, usable forms | Accurate Business Profile and partner listings, readable pages |
| Documentation | ChatGPT agent | Comet | AI Mode agentic features |
Availability depends on country, plan and category, and changes often. Treat the table as a snapshot reviewed in October 2026, not a permanent description.
Why does the route matter for your website?
Because it decides what the agent sees. A remote browser such as ChatGPT agent identifies itself in its requests; OpenAI documents how to verify its signed traffic. An agent in the user's browser looks much more like that user's own visit. A partner integration may never load your website at all, so your listing on the partner platform becomes the source.
That means one fix rarely covers everything. Your website must be clear, your Business Profile must match it, and any booking platform you rely on must carry the same services, prices and hours.
What is the same across all three?
The decision facts. Whatever the route, an agent compares offers, prices, availability, locations and proof. The seven shortlist signals apply to every platform, which is why one well-maintained set of facts serves all three.
This mirrors what Arrow sees in AI answers generally: AI visibility is not one channel, but the underlying facts are shared.
How should you test each platform?
Use the same delegated task in each, with the same constraints, on the same day. Record which businesses each agent kept, what it said about yours and where it stopped. Differences usually point to a source problem: an outdated profile, a page that did not load or a listing missing on a partner platform.
Record the account type and location used. Results can differ between free and paid plans and between countries, so compare like with like.
Which one should you prioritise?
Prioritise the platforms your buyers already use. Consumer services with bookings often depend on Google first. B2B buyers researching vendors are frequently in ChatGPT. Then fix shared facts on your own site, which benefits every agent at once. The agent-ready checklist is platform-neutral for that reason.
Sources and editorial scope
Reviewed October 1, 2026. Platform-specific statements link to the documentation beside the claim. The workflows and examples are Arrow AI editorial guidance. Agent features change quickly and vary by plan and country; check the linked documentation before acting. Fictional scenarios illustrate a method; they are not customer results, measured demand or evidence of ranking gains.
Part of Agent-Ready Business. Explore Arrow GEO or request a free audit to see which facts an AI agent can already find about your business.