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Perplexity Comet vs Opera with Aria
Perplexity Comet scores higher overall (8.7 vs 7.4), 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 Opera with Aria if…
People who want a capable free AI sidebar in a familiar browser
7.4/10★★★★★Full review →Side by side
| Perplexity Comet | Opera with Aria | |
|---|---|---|
| Overall score | 8.7/10 | 7.4/10 |
| Rank in category | #1 of 10 | #6 of 10 |
| Price | Freemium · from $5/month | Free |
| Free version | Full browser and Comet Assistant free on every platform, with limits on heavier AI features | Free with no login required |
| Platforms | Mac, Windows, iOS, Android | Windows, Mac |
| Made by | Perplexity AI | Opera |
| Agent quality | 8 | 6.5 |
| Ease of use | 8.5 | 8.5 |
| Features | 9 | 6.5 |
| Value for money | 9 | 9 |
| Platforms | 10 | 6 |
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
Opera with Aria: what the AI does
- Page-aware answers from short prompts
- Summaries across multiple pages
- PDF and spreadsheet analysis
- YouTube transcript tools
- Image generation
- Voice input and output
- Completely free, no account needed
- Works with files, tabs and videos
- Built into a mature, full-featured browser
- No agent that acts on websites
- You can't choose the model
- Less independent testing than rival assistants