ChatbotsSEOFreeFree PlanAPI AccessMultiple models Powered
P

Perplexity

AI answer engine that cites live sources for every response

Perplexity is the best AI tool for research — every answer comes with clickable citations, and the free tier is genuinely useful.

Overall score
8.9out of 10
Price
Free · $20/mo (Pro)
Free plan
Yes
API access
Yes
Languages
20+ languages
Limits
Free: unlimited basic searches, limited Pro searches/day; Pro: much higher daily Pro search allowance.
Capabilities88%

Perplexity's core strength is research: it searches the live web and returns an answer with clickable citations instead of an unsourced wall of text. Focus modes let you bias the search toward academic sources, recent news, or a specific domain depending on the task, and Perplexity Pages can turn a research session into a shareable, formatted report for anyone who needs to hand off findings to someone else.

Quality of Output87%

Answers are generally accurate and well-organized, with quality that tracks the reliability of the sources it finds for a given query. Because every claim is traceable to a cited source, it's unusually easy to spot-check an answer yourself rather than simply trusting the model's own confidence, which is a meaningful quality advantage over tools that answer purely from memorized training data.

Ease of Use94%

The search-bar-style interface is instantly familiar and has essentially no learning curve. There's no prompt engineering required to get a useful first answer — type a question the way you would into a search engine, and the structured, cited response comes back automatically, with suggested follow-up questions to keep digging without re-typing context.

Pros
✓Every answer includes cited, clickable sources
✓Fast, genuinely useful free tier
✓Focused, search-style interface with no clutter
✓Model choice on Pro (GPT-4o, Claude, and others)
Cons
–Less suited to long-form creative writing
–Pro search allowance still has a daily cap
–Source quality varies by query
What’s included
Cited web search answers
Focus modes (Academic, Writing, etc.)
Pro model selection
File & image upload
Perplexity Pages for shareable reports
API access
Pricing

The free tier is genuinely useful for daily research; Pro at $20/mo raises the daily cap on premium searches and unlocks model choice. A higher Max tier exists for the heaviest research users who want the largest daily allowance and access to the most capable underlying models, and API pricing is available separately for developers building search-and-cite capability into their own tools.

Limitations

It's optimized for research and Q&A rather than long-form creative writing, and even Pro has a daily cap on premium searches. Source quality naturally varies by query — a well-covered topic returns strong citations, while an obscure or very recent topic may return thinner, less authoritative sources simply because better ones don't yet exist on the open web.

How to start using Perplexity
  1. 1
    Go to perplexity.ai

    No account is required to try a basic search, though signing up unlocks more features.

  2. 2
    Ask a question

    Type a question like you would into a search engine — Perplexity searches the web and cites its sources.

  3. 3
    Check the sources

    Review the cited links alongside the answer to verify claims or dig deeper.

  4. 4
    Try a focus mode

    Switch to Academic, Writing, or another focus mode to tune results for a specific type of query.

  5. 5
    Upgrade for more Pro searches

    Subscribe to Pro for a higher daily allowance of premium, model-selectable searches.

Frequently asked questions
Yes, the free tier includes unlimited basic search and a limited number of Pro searches per day.