Otto vs Comet
Otto and Comet are both listed under AI travel agents. AI assistant for work trips that plans, books and rebooks flights and hotels Perplexity's AI browser whose assistant can search travel sites and do bookings for you Cost labels differ: Otto is price unconfirmed; Comet is free + paid plan.
Which one to choose
Choose Otto when you want what its listing emphasises: Frequent work travellers who want an assistant to plan around meetings and handle bookings and changes.
Choose Comet when you want what its listing emphasises: Perplexity subscribers who want an agent to compare fares and work through booking sites inside their own browser.
Otto vs Comet, side by side
| Fact | Otto | Comet |
|---|---|---|
| Cost | Price unconfirmed. Check the provider | Free + paid plan. Paid from US$20 per month |
| Booking | Books for you | Books for you on paid plans |
| What it is | AI travel agent for business trips. AI assistant for work trips that plans, books and rebooks flights and hotels | AI web browser with built-in agent. Perplexity's AI browser whose assistant can search travel sites and do bookings for you |
| How it uses AI | Plans trips around your calendar, picks flights and hotels that match your preferences and company policy, books them in the conversation and rebooks when plans change. | The Comet Assistant navigates sites, clicks buttons and fills in forms across multiple tabs to complete tasks you describe, pulling context from the pages it visits. |
| Best for | Frequent work travellers who want an assistant to plan around meetings and handle bookings and changes. | Perplexity subscribers who want an agent to compare fares and work through booking sites inside their own browser. |
| Platforms | Web, iPhone, Android | iPhone, Android |
| Status | Available | Available |
Frequently asked questions
What is the difference between Otto and Comet?
Both are listed as AI travel agents that book. Otto is listed as price unconfirmed; check the provider, Comet as free + paid plan; paid from us$20 per month.
Which should I choose, Otto or Comet?
Choose Otto when you want: Frequent work travellers who want an assistant to plan around meetings and handle bookings and changes. Choose Comet when you want: Perplexity subscribers who want an agent to compare fares and work through booking sites inside their own browser. Confirm prices and booking terms on each provider’s site; listings summarise dated sources, not a hands-on test.
Sources
- Otto - AI Travel Assistant for Effortless Business Travelottotheagent.com, checked
- Introducing Otto: The Executive Assistant for Every Business Traveler (Otto blog)ottotheagent.com, checked
- Comet Browser: a Personal AI Assistantperplexity.ai, checked
- The New Comet Assistant (Perplexity blog, 6 November 2025)perplexity.ai, checked
- Mitigating Prompt Injection in Comet (Perplexity blog)perplexity.ai, checked
- Computer for Pro subscribers, Computer for Slack (Perplexity changelog, March 2026)perplexity.ai, checked
- Comet now available for everyone, background assistants (Perplexity changelog)perplexity.ai, checked
- Which Perplexity Subscription Plan is right for you? (Perplexity Help Center)perplexity.ai, checked
Full listings: Otto and Comet. Otto alternatives · Comet alternatives. Open in the comparison tool.