Duck.ai
Depends
Confidence: Low
Low confidence: Duck.ai looks fine as a free, anonymous AI chat for casual or privacy-minded users.
Comparison
Duck.ai vs Perplexity
Duck.ai and Perplexity both land on Depends.
Perplexity
Depends
Confidence: Medium
The free tier is an easy yes for fast, cited web answers.
| Compare | Duck.ai | Perplexity |
|---|---|---|
| Verdict | Depends | Depends |
| Best for | Guess: casual, anonymous AI chats | Quick cited research |
| Who it's not for | Guess: developers needing API access or model choice | Security-sensitive teams eyeing the Comet browser |
| Privacy | No known public vulnerabilities found in the sources reviewed.¹ | Several public vulnerabilities, mostly in the Comet browser; vendor runs a disclosure program and security page.14 |
| Support quality | No support evidence found | Customer service complaints documented on Facebook |
| Public sentiment | Public feedback is sparse; the loudest signal is a Reddit engineer complaining there are "way too many issues" with.⁴ | Users like the speed, clean interface, and cited answers, but Reddit sentiment on Pro's value turned sharply negative in 2025-2026.⁷ |
| Biggest gotcha | Reliability: an engineer's Reddit post cites "way too many issues" . test before relying on it⁴ | Top complaint is Pro usage limits; one user pegged effective cost near $1/query12 |
Pick Duck.ai when
- Guess: casual, anonymous AI chats
- Guess: privacy-minded DuckDuckGo users
- Guess: trying AI without creating an account
When Duck.ai is not a fit
- Guess: developers needing API access or model choice
- Guess: teams needing dependable, SLA-backed AI assistance
- Anyone expecting transparent docs . the page barely renders without JavaScript
Pick Perplexity when
- Quick cited research
- Casual fact-checkers
- Non-technical researchers
- Free-tier search users
When Perplexity is not a fit
- Security-sensitive teams eyeing the Comet browser
- Heavy daily users who hate usage caps
- Buyers expecting $20/month Pro to feel worth it
- Orgs sensitive to vendor crawling ethics
Sources
- Product security pageduck.aiofficial
- Duck.ai homepageduck.aiofficial
review
review
- Perplexity Pricingperplexity.aiofficial
- Perplexity Enterpriseperplexity.aiofficial
- Perplexity Reviews . G2g2.comreview
- My In-Depth Perplexity AI Reviewlearn.g2.comreview
- Perplexity Review . juma.aijuma.aireview
- Pro not worth it anymore . Redditreddit.comreview
- Pro is an absolute joke now . Redditreddit.comreview
- Pro costs $1 per query . Redditreddit.comreview
security
- CVE-2025-50709 . NVDnvd.nist.govsecurity
security
- Stealth crawlers . Cloudflareblog.cloudflare.comsecurity