ChatGPT vs Perplexity Comet
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Which is better, ChatGPT or Perplexity Comet?
It depends on what you want done. Pick ChatGPT if you want the broadest agent on every device and already pay for, or are happy to pay for, ChatGPT Plus. Pick Perplexity Comet if you want an AI browser that's free on Mac, Windows, iPhone and Android and does great research. ChatGPT is an AI assistant and Perplexity Comet is an AI browser, so we rank them separately. Prices as of November 2026: ChatGPT, agent features from $20/mo; Perplexity Comet, from $17/mo.
On our rubric, ChatGPT scores higher, 8.5 to 7.6. It handles 3 of our 6 everyday errands fully on its own, to Perplexity Comet's 2. Here's where each one wins.
ChatGPT8.5
Choose ChatGPT if you want the broadest agent on every device and already pay for, or are happy to pay for, ChatGPT Plus.
Visit ChatGPTChoose Perplexity Comet if you want an AI browser that's free on Mac, Windows, iPhone and Android and does great research.
Visit Perplexity CometErrands, side by side
| Errand | ChatGPT | Perplexity Comet |
|---|---|---|
| Book reservations, rides and travel | With your OK | With your OK |
| Shop and check out | With your OK | With your OK |
| Handle email and calendar | Yes | With your OK |
| Fill forms and click through websites | Yes | Yes |
| Cancel subscriptions, chase refunds, lower bills | With your OK | No |
| Research and compare | Yes | Yes |
Scores side by side
| Criterion | ChatGPT | Perplexity Comet |
|---|---|---|
| Gets it done (30%) | 9.0 | 8.0 |
| Reach (15%) | 9.0 | 8.5 |
| Knows you (15%) | 8.5 | 7.0 |
| Safety & control (15%) | 8.0 | 6.5 |
| Value (15%) | 7.5 | 8.5 |
| Trust (10%) | 8.0 | 6.5 |
| Overall | 8.5 | 7.6 |
Where they work
| Clicks through websites for you | ||
|---|---|---|
| Works in the background or on a schedule | ||
| Remembers you | ||
| Works over text messages | ||
| Talks by voice | ||
| Phone app |
Price and fine print
| ChatGPT | Perplexity Comet | |
|---|---|---|
| Type | AI assistant: ai assistant | AI browser: ai browser |
| Made by | OpenAI | Perplexity |
| Our rank | #1 of ai assistants with agent features | #1 of ai browsers |
| Price | Agent features from $20/mo (as of November 2026) | From $17/mo (as of November 2026) |
| Free plan | Yes, with limited ChatGPT Work in the desktop app (as of November 2026) | Yes: the browser and assistant are free, with limited agent use (as of November 2026) |
| Refunds | Not stated | Not stated |
| Best for | Most people who want one agent that can do a bit of everything. | People who want an AI browser on every device for free. |
ChatGPT: pros and cons
- Works through websites, forms and your connected apps in one place
- Scheduled tasks on Plus; Pro's dot keeps working after you close the tab
- Apps on web, Mac, Windows, iPhone and Android, with voice
- Hands control back to you for logins and payments
- Full agent features need Plus at $20; Free and Go only get limited desktop access
- The always-on dot needs Pro from $100 a month and launched without the UK, EU and Switzerland
- Usage limits apply, and OpenAI's published caps lag behind its plan changes
- Purchases still need you to step in, so shopping isn't hands-off
Perplexity Comet: pros and cons
- Free on Mac, Windows, iPhone and Android
- Excellent research with sources
- Acts on the page you're looking at
- Pro is $17 a month billed yearly
- Frequent agent tasks need a paid plan, and free limits aren't published
- Background assistants are on the $200 Max plan
- Prompt-injection attacks against AI browsers, Comet included, have been demonstrated
- Switching browsers is a big change for a feature
ChatGPT vs Perplexity Comet: questions
Is ChatGPT better than Perplexity Comet?
On our rubric, ChatGPT scores higher (8.5 vs 7.6). Perplexity Comet is still the better pick if you want an AI browser that's free on Mac, Windows, iPhone and Android and does great research.
Which is cheaper, ChatGPT or Perplexity Comet?
ChatGPT: agent features from $20/mo, free plan: yes (as of November 2026). Perplexity Comet: from $17/mo, free plan: yes (as of November 2026).