Gamma is the better app overall, scoring 8.5 to 8.2. Gamma wins on 4 of the 5 scores, Comet on 1.
Students, founders and marketers who need a good-looking deck fast
Researchers and heavy web users who want AI help beside every tab
Score by score
The details
| Feature | Gamma | Comet |
|---|---|---|
| Category | AI Assistants | AI Assistants |
| Category rank | #6 of 16 | #10 of 16 |
| Developer | Gamma | Perplexity AI |
| Pricing | Free + paid plans | Free + paid plans |
| Usable for free | Yes | Yes |
| iPhone & iPad | ✓ | ✓ |
| Android | ✓ | ✓ |
| Mac | — | ✓ |
| Windows | — | ✓ |
| Web | ✓ | — |
Common questions
Is Gamma better than Comet?
Gamma is the better app overall, scoring 8.5 to 8.2. Gamma wins on 4 of the 5 scores, Comet on 1.
Which is cheaper, Gamma or Comet?
Gamma: Free with 400 starter credits; Plus is $12 a month, or $9 a month billed yearly. Comet: Free on every platform; Perplexity Pro ($20 a month) and Max raise the limits. On value for money, Comet scores higher.
Do Gamma and Comet work on the same devices?
Only Gamma runs on Web. Only Comet runs on Mac, Windows.
Which is more private, Gamma or Comet?
Gamma scores higher on privacy (7.0/10). On individual plans Gamma may use your content to improve its AI unless you opt out in Data Controls; team workspaces are excluded. The App Store label links contact info, location and usage to you, with no tracking.
Strengths and weaknesses
Gamma
- Polished first drafts from a short prompt
- Exports to PowerPoint and Google Slides on every plan
- Imports your existing PDFs and PowerPoint files
- Free credits are a one-time grant that never refreshes
- Free plan caps you at 10 slides per prompt
- Individual plans train on your content unless you opt out
Gamma turns a prompt, an outline or a pasted document into a polished presentation, doc, website or social post in moments. Gamma 5, released in October 2026, lets you talk the idea through with its agent before it builds anything, then fine-tune on a freeform canvas. Exports to PowerPoint, PDF and Google Slides work even on the free plan. Free credits never refresh, though, and free decks carry Gamma branding.
Full Gamma 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
