AI search tools such as Perplexity search the web, then write a short answer with links to sources. They are useful for a first look at a topic. They are not a source themselves, and they should never receive client data. Open every link before you rely on a point.
Last reviewed: 17 October 2026. Facts checked. We ran web searches on Perplexity's citation accuracy and data handling. We tried to open Perplexity's help-centre page on data collection and a Computerworld report on a citation study, but our fetch tool was blocked on both, so we read only search-result summaries. We did not open the original Columbia Journalism Review study or any vendor terms. Plan details change, so confirm with the vendor. This is a neutral post and does not rank vendors.
What AI search does
An ordinary search engine gives you a list of pages. An AI search tool reads several pages for you and writes one answer. Each claim is often tagged with a numbered link.
That feels like evidence. It is not. The tool chose the pages, picked the sentences and wrote the summary. Any of those steps can go wrong.
What the sources we found say about accuracy
A search summary of a Columbia Journalism Review Tow Center study, as reported by Computerworld, said chatbots with search often cited wrong sources, with Perplexity doing better than others in that test but still wrong in a share of cases. We read this only as a search summary, so we give no figures. Another report said Perplexity cites its sources, but some citations are incorrect.
The lesson is simple: a link next to a sentence does not prove the page says it.
Good uses in an audit firm
| Use | Why it is reasonable | Your check |
|---|---|---|
| Finding which circular or notification to read | Speeds up discovery | Open the official page from the regulator's own site |
| Understanding an unfamiliar industry term | Low risk | Cross-check with a standard reference |
| Listing questions to ask a client in a new sector | Idea generation | Review for relevance |
| Spotting news about a listed client | Quick scan | Verify on the exchange filing |
Uses to avoid
- Pasting client names, figures or documents into a consumer tool.
- Citing an AI-generated summary in a working paper as the authority.
- Using an AI answer on a tax rate, due date or penalty without reading the Act, rule or notification.
Dates and thresholds change often. Always confirm against the primary text.
Data handling: what to ask
Search results told us Perplexity's consumer plans have model training on by default with an opt-out, and that enterprise plans are described as not using data for training. These came from secondary sources, and retention details varied between them. We could not confirm them on the vendor's own page. So ask the vendor, and read the current terms, for any plan you use:
- Is our input used to train models?
- How long are queries and files kept, and can we shorten it?
- Where is data processed?
- Can an admin see and export logs?
- What happens to uploaded files?
Under India's DPDP Rules, notified on 14 November 2025 with an eighteen-month phase-in (PIB), personal data in prompts should be a deliberate decision, not an accident. Use our DPDP compliance checklist.
A safe research routine
- Use only public questions. Strip client names and numbers.
- Read the answer as a list of leads.
- Open each cited page. Does it say what the answer claims?
- Prefer primary sources: the Act, rule, standard, regulator circular, filing.
- Save the primary page, with the date you accessed it, in the working paper.
- Note in the file that an AI search tool was used to find it.
How this fits with other AI tools
AI search is for finding. A model working on your documents is a different tool with different risks. Our comparison of ChatGPT, Claude, Perplexity and Grok for Indian CAs covers the differences, and the task-by-task guide shows how to match tool to task.
For firm rules, adapt the AI use policy template.
Frequently Asked Questions
Is Perplexity reliable for audit research?
It is a useful starting point. Its citations can be wrong, so open each source before relying on it.
Can we put client data into Perplexity?
We advise against it unless you have confirmed the plan's terms, your client's permission and your own policy. Use public questions for research.
Can an AI search answer go in a working paper?
Cite the primary source you verified, not the AI summary.
Does it replace a tax research database?
No. Use it to find leads, then confirm in an authoritative source.
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Statutory facts on this page are checked against their sources, and the page says where it relied on secondary reporting. How we verify · Report an error