ChatGPT is the better app overall, scoring 9.0 to 8.2. ChatGPT wins on 4 of the 5 scores, Comet on 0, with 1 tied.
People who want one AI assistant for writing, research, images and everyday questions
Researchers and heavy web users who want AI help beside every tab
Score by score
The details
| Feature | ChatGPT | Comet |
|---|---|---|
| Category | AI Assistants | AI Assistants |
| Category rank | #1 of 16 | #10 of 16 |
| Developer | OpenAI | Perplexity AI |
| Pricing | Free + paid plans | Free + paid plans |
| Usable for free | Yes | Yes |
| iPhone & iPad | ✓ | ✓ |
| Android | ✓ | ✓ |
| Mac | ✓ | ✓ |
| Windows | ✓ | ✓ |
| Web | ✓ | — |
Common questions
Is ChatGPT better than Comet?
ChatGPT is the better app overall, scoring 9.0 to 8.2. ChatGPT wins on 4 of the 5 scores, Comet on 0, with 1 tied.
Which is cheaper, ChatGPT or Comet?
ChatGPT: Free plan with ads in some countries; Plus $20/month; Pro from $100/month. Comet: Free on every platform; Perplexity Pro ($20 a month) and Max raise the limits. On value for money, ChatGPT scores higher.
Do ChatGPT and Comet work on the same devices?
Only ChatGPT runs on Web.
Which is more private, ChatGPT or Comet?
ChatGPT scores higher on privacy (6.5/10). The App Store label links contact info, content, location, identifiers and usage to you, and lists some usage data for third-party advertising. Chats train models unless you opt out.
Strengths and weaknesses
ChatGPT
- Widest feature set of any AI assistant
- Polished apps on phone, desktop and web
- Free plan runs on the latest model family
- Free and Go plans show ads in some countries
- Chats train models by default unless you turn it off
- Top models and higher limits require a paid plan
ChatGPT is the most complete AI assistant you can get. It writes, codes, searches the web, talks back in voice mode, makes images and can work through long tasks with its ChatGPT Work agent. GPT-6 now powers every plan, and memory and projects keep context across chats. The catch: the Free and Go plans show ads in several countries, and your chats train models unless you opt out.
Full ChatGPT review
Comet
- Free on Mac, Windows, iPhone and Android
- Can act on pages, not just sum them up
- Your sessions sync between phone and computer
- A synced account lets Perplexity record your browsing history
- The helper has to read the pages you visit
- No Linux version
Comet is Perplexity's web browser, with an AI helper beside every tab. It can sum up a page or compare products across sites. It can even work through a multi-step task while you browse. Bigger jobs go to Perplexity Computer. It's free on Mac, Windows, iPhone and Android, and your sessions sync between them. The trade-off is privacy. The helper has to read your pages, and a synced account lets Perplexity record your history.
Full Comet review
