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Perplexity Comet vs Dia
Perplexity Comet scores higher overall (8.7 vs 6.9), but the right pick depends on what you need.
Choose Perplexity Comet if…
People who want the most capable free AI browser on every device
8.7/10★★★★★Full review →Choose Dia if…
Mac users who loved Arc and want a well-designed AI browser for work
6.9/10★★★★★Full review →Side by side
| Perplexity Comet | Dia | |
|---|---|---|
| Overall score | 8.7/10 | 6.9/10 |
| Rank in category | #1 of 10 | #7 of 10 |
| Price | Freemium · from $5/month | Freemium · from $10/month |
| Free version | Full browser and Comet Assistant free on every platform, with limits on heavier AI features | Browser free (profiles, tab groups, split view, ad blocker, sync) with no AI |
| Platforms | Mac, Windows, iOS, Android | Mac, Windows |
| Made by | Perplexity AI | The Browser Company (Atlassian) |
| Agent quality | 8 | 7.5 |
| Ease of use | 8.5 | 8.5 |
| Features | 9 | 6 |
| Value for money | 9 | 6.5 |
| Platforms | 10 | 4 |
Perplexity Comet: what the AI does
- Comet Assistant on every page
- Agent that browses and completes tasks
- Questions and comparisons across open tabs
- Research answers with citations
- Choice of AI models
- Voice assistant
- Free on Mac, Windows, iPhone and Android
- Strongest built-in agent among mainstream browsers
- Syncs bookmarks and history across devices
- Built-in ad blocker
- Perplexity says it uses the browser partly to collect data for ad targeting
- No iPad app, and some connectors are desktop-only
- Free tier caps heavier AI features
Dia: what the AI does
- Ask Dia about any page
- Chat across your open tabs
- Integrations with Slack, Gmail, Notion, Calendar and more
- Morning Brief and meeting prep (Better Days)
- Report and deck creation
- Best-designed browser here
- Strong work-app integrations
- Free browser has split view, profiles and an ad blocker
- AI now needs a paid plan for new Mac users
- Mac-first; no mobile app
- Better Days at $100/month is steep