No single assistant is best. Use one that searches the web and shows source links: Perplexity for fast sourced scans, ChatGPT deep research or Gemini Deep Research for longer reports, Claude's Research mode for follow-up reasoning. Whichever you choose, treat every customer, rival and price claim as unchecked until you have opened the cited page and found the sentence.
The assistants differ less than the way you use them. All four can return a confident paragraph with a link beside it, and in each case the link can open a page that does not say what the paragraph says. The routine below, a claim table with a source column, is what separates usable research from a tidy guess.
Four search-enabled assistants side by side
Founders usually ask which subscription to buy. For research the question is narrower: which one gives you source links you can open, lets you steer the search, and fits the budget of a company with no revenue yet? The table compares them on those points only. Prices are list prices in USD and change often, so confirm them on the vendor's page before you pay.
| Assistant | Research mode | Sources | Paid plan to try | Watch for |
|---|---|---|---|---|
| Perplexity | Search answers with citations by default; Deep Research is on Pro and Max, not Free | Links shown beside the answer, so checking is quick | Pro, shown on its page at $17 a month billed annually | Fast and tidy, which makes weak sources look as solid as strong ones |
| ChatGPT | Deep research writes a report from the public web, sites you name, uploaded files and connected apps | OpenAI says the finished report comes with citations or source links | Plus at $20 a month; deep research is limited on the Free and Go plans | Usage varies by plan; the plan step lets you edit the search before it starts |
| Gemini | Deep Research builds a report, with a plan you can edit first | A multi-page report from web pages, plus your Gmail, Drive and Chat if you allow it; runs for several minutes | Google AI Pro at $19.99 a month | Long reports invite skimming; open at least five links |
| Claude | Research runs several searches that build on each other, across the web and any connected tools | Check how sources appear in your own run; Anthropic's help page does not describe the citation format | Pro at $20 a month, or $17 a month billed annually; Research is not on the free plan | Switch it on from the + menu; research sessions use up your limits faster than chat |
Two practical points come out of the table. First, a paid plan is not required to start: all four have free tiers that search the web, so a first pass costs nothing, although the deep research modes are limited or missing on free plans. Second, the plans cost about the same, so pick on how the tool behaves in your own test (see the 30-minute test later) rather than on the price list.
If you only want one tool for a quick competitor and pricing scan, a repeatable Perplexity brief is a good starting routine. If you want a long first-draft report you will then take apart, one of the deep research modes suits better.

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Buy nowA founder, five rivals and one pricing page
Say a founder is planning a fresh-cooked dog food box delivered every two weeks, sold from a small pet shop's kitchen. She asks an assistant with search switched on for the five closest rivals, their prices per meal and who they sell to. She has an hour and no budget for a research report.
The answer comes back as a neat table. Here is a cut-down version of what the assistant said, followed by what she found by opening each source. All figures are illustrative.
| Rival | AI said | Pricing page said | Per meal | Verdict |
|---|---|---|---|---|
| Rival A | $52 a box | $52 for 8 meals, delivered every two weeks | $6.50 | Right |
| Rival B | $49 a week | $49 for 6 meals, billed every two weeks | $8.17 | Wrong billing basis; AI implied $98 per fortnight |
| Rival C | $38 a box | $38 for 5 meals, small-dog box only | $7.60 | Right, but only for one size |
| Rival D | $36 a box | $36 is the first box at half price; then $72 for 9 meals | $8.00 | Introductory price reported as the normal price |
| Rival E | from $5.90 a meal | $5.90 applies to a 12-meal box at $70.80 | $5.90 | Right, with a 12-meal minimum |
Three of five rows needed a correction. Using the pages, the per-meal prices run from $5.90 to $8.17 with a median of $7.60. Had she copied the first table, Rival B would have looked twice as expensive per delivery as it is, and Rival D would have looked about half its real price. A founder planning to sell at $7.40 a meal would have believed she was mid-market on bad numbers; with the checked ones she sat just under the median, and the story she told investors changed.
The assistant was not careless. It reported what it read. Rival B's page used the phrase "$49 a delivery", which the assistant turned into "a week". Rival D's banner showed the half-price offer in large type. The fix is not to distrust the tool but to give it a table that makes checking unavoidable, which comes next.
A prompt that forces a claim table with sources
Plain questions get confident paragraphs. A structured request gets rows you can check one by one. Here is a prompt for the dog food example; swap in your own market.
I am researching a start-up that sells fresh-cooked dog food in a box delivered every two weeks.
Find the five closest competitors that sell direct to owners.
Return a table with one row per competitor and these columns:
1. Name and website
2. Price shown on its own pricing page (exact wording, in quotation marks)
3. Billing basis (per box, per delivery, per month, introductory or ongoing)
4. Number of meals in that box
5. Link to the exact page you read
6. Date the page was last updated, if shown
Rules: use the competitor's own site for prices, never a review or comparison site.
If you cannot open a pricing page, write "not found" in the price column. Do not estimate.
After the table, list anything you were unsure about.
Illustrative output for one row, as it might come back:
Rival B | rivalb.example | "$49 per delivery" | per delivery, ongoing | 6 meals | rivalb.example/plans | no date shown
Notice what the format does. The exact wording sits in quotation marks, so you can compare it with the page in seconds. The billing basis column catches the "$49 a week" mix-up. The "not found" instruction stops the assistant filling a gap from an old review. If a row comes back with a price and no wording in quotation marks, treat it as invented until proved otherwise.
Fix two things in the first output you get: remove any row whose link goes to a comparison site, and re-ask for those rivals by name with the instruction to use only the rival's own domain. Most assistants then find the real page.
Checking customer claims: who buys, and how many
Customer claims come in three flavours and each needs a different check. A market size ("the pet food delivery market is worth $X"), a profile ("buyers are urban owners aged 25 to 40") and a pain point ("owners say fresh food is too expensive"). The assistant will give you all three in the first answer. Only the last can be tested cheaply.
For market size, ask the assistant for the original document and open it. Look for the year the figure covers, what is counted (a whole category or one product type) and whether the method is shown. Many figures link to a press release that quotes a paid report you cannot read. If you cannot see the method, write the number in your notes with the word "unverified" next to it and keep it out of anything an investor will read.
For a profile, look for a survey page, not a write-up summarising one. A claim that "buyers are aged 25 to 40" is useful only if you can see who was asked, how many and when. A source with no sample size is an opinion with a link attached.
For a pain point, the best evidence is public reviews of rivals. Ask the assistant to pull the ten most recent one-star and two-star reviews for each rival from their own review pages or a named review site, quote the sentences, and group them. You then read the quotes yourself. Counting complaints about delivery timing or portion size in your own table is far more persuasive than any summary. The same technique, applied to your own orders later, is covered in using ChatGPT for customer research.
A filled-in checklist for one customer claim looks like this:
- Claim: "Fresh-food buyers are mainly owners of dogs over 15 kg."
- Link opens: yes, a rival's own news page.
- Sentence found: no. The post says "many of our customers have large dogs" with no figure.
- Year and sample: none given.
- Second source: none.
- Decision: keep as a hypothesis for interviews, not as a fact.
That last line matters. A hypothesis is allowed to be unproved; it is only the dressing-up as a fact that causes trouble later.
Checking rival claims: features, funding and size
Rival claims are the ones most likely to be stale. Features change, products are retired and companies rename. The assistant will often describe a rival as it was when its sources were written. Three habits keep this under control.
Check the date. Look at the footer and the changelog or news page of the rival itself. If the latest post is 14 months old, the company may be quiet, struggling or simply bad at posting updates; either way you now know the page is not a reliable view of today.
Check the feature on the product page, not the review. If the assistant says a rival offers "pause or skip any delivery", open the help centre and search for "skip". Help centres are usually more candid than marketing pages, and they list exceptions such as a cut-off 48 hours before dispatch.
Check the company identity. Two firms with similar names can be merged into one by a search tool. If the assistant says a rival has "raised $12 million", search the funding claim on the rival's own press page or the investor's page. If you cannot find it, drop it. A competitor table with no funding column is better than one with a wrong figure.
A short example from a different business shows the same habit. Say a garden centre owner is researching a plant subscription start-up. The assistant describes a rival's "12-month plan with free pots". The rival's current plan page lists only a six-month plan, and the 12-month plan appears only in a cached page from the previous year. Opening the live page and the Wayback Machine copy side by side shows exactly when the offer ended, which is worth knowing because it hints the rival tried and dropped it.
Checking pricing claims without a lawyer's patience
Pricing is the claim with the most ways to be wrong, so use a fixed order. Open the vendor's own pricing page. Read the billing basis before the number. Note whether the price is introductory. Check whether the price shown depends on signing in or on your region; if the page may serve different amounts to different visitors, quote only what you see and say so.
Then run through this list for each rival, and write the answer in the row.
- Is the price per user, per box, per delivery, per month or per year?
- Is it the headline price or the price after the first month?
- Is it the monthly price billed monthly, or the monthly equivalent of an annual bill? (Perplexity's own page shows only its annual price, for example, which is why research summaries disagree about its monthly cost.)
- What does the cheapest plan leave out that you would need?
- Is there a "contact us" tier, which means the real price is not public?
- Does shipping or a minimum order sit outside the number?
A quick sum shows why the order matters. Say Rival D offers $36 for the first box and $72 afterwards. A customer on a six-box trial pays $36 plus five boxes at $72, which is $396, or $66 a box on average. Quoting "$36 a box" understates the real cost by 45 per cent. Anyone benchmarking against $36 would then price their own box too low and lose margin on every order.
For a deeper treatment of why research alone should not set your price, read what AI can and cannot tell you about charging. It sets the limits: an assistant can lay rivals' prices side by side, but only your costs and your customers can say what yours should be.
A 30-minute test to choose your assistant
You do not need a review to pick between four assistants. You need a test using questions whose answers you already know. Choose ten facts about your own market that you have verified: three rivals' current prices, two features, a delivery policy, a launch date, and so on. Ask each assistant to research the same ten items using the same prompt as above.
Score each answer on four things: the link opens, the page contains the sentence, the number matches, and the date is shown. One point each, so forty points per assistant. An illustrative result:
| Assistant | Link opens | Sentence on page | Number matches | Date shown | Total of 40 |
|---|---|---|---|---|---|
| Assistant 1 | 10 | 9 | 8 | 4 | 31 |
| Assistant 2 | 10 | 7 | 7 | 6 | 30 |
| Assistant 3 | 9 | 8 | 9 | 2 | 28 |
| Assistant 4 | 10 | 6 | 6 | 3 | 25 |
The point of the exercise is the pattern, not the winner. An assistant that scores well on "link opens" and badly on "sentence on page" is citing pages without reading them closely. One that scores badly on "date shown" may be fine for prices if you will date them yourself. A founder who runs this test will usually find that two assistants are close and one is clearly weaker for their market. Keep the test sheet; rerun it when a vendor announces a new model, because behaviour changes more often than the price.
When the assistant cites a page that does not say it
This is the failure that catches people who check only that links work. A link that opens is not evidence. Here is how it looks in practice, in an illustrative case.
An optician's founder is checking whether a rival's frame subscription includes lens replacement. The assistant answers "yes, lens replacement is included" and links to the rival's plans page. The link opens and the page looks right. Searching the page for "lens" finds one hit in a footnote: "Lens replacement is available at an additional cost." The assistant had read the heading and ignored the footnote. Her margin plan assumed free replacements on the rival's side, so her price looked uncompetitive until she re-read the page.
The habit that catches this takes ten seconds. Open the link, press the browser's find shortcut, and search the page for the key word of the claim. If the word is missing, or appears only in a footnote or a different context, the claim fails. Make this part of the table: add a column called "found on page: yes or no" and fill it in yourself.
Other failures worth knowing:
- A merged company: two firms with similar names become one row with the first firm's price and the second firm's feature list.
- A regional page: you see one price, the assistant read another. Quote what you see, with the date.
- A dead page: the link works but the page is a redirect to the home page. The claim may be about a plan that no longer exists.
- A "from" price: "from $5.90" is the best case, and often needs a minimum order.
- A user-generated source: forum posts and review summaries repeat each other, which can look like many sources when there is one.
Keeping the research honest when you share it
Once the table is checked, the way you share it matters. Label each row with the date you checked it and the page you checked. Keep a folder of dated screenshots of the pricing pages you relied on; if a rival changes its price next month, you can show what you saw. Mark any figure you could not source as a hypothesis, and keep those in a separate list so they do not leak into a pitch.
When you pass the table to someone else, do not forward the assistant's chat link as your evidence. Chats can change, links can expire, and the person reading cannot tell what you verified. Paste the table and the dated screenshots instead.
A short gift shop example shows the payoff. A founder planning a monthly box of small-batch gifts had, after an hour, a table of six rivals and four unverified claims. Two weeks later a mentor asked why her price sat above two rivals. She could point to the dated pages, show that the lower prices were introductory, and explain the difference in box size. Without the table she would have been defending a number from memory.
What AI research cannot tell you
An assistant that searches the public web can tell you what rivals say about themselves. It cannot tell you what customers will pay, why they switch or what they say when you are not in the room. Those need conversations. A sensible split is to let the assistant produce the first map and the claim table, then spend your human time on five to ten customer interviews built from the gaps in that map.
The assistant can help prepare those interviews: draft questions, group answers afterwards, spot patterns in transcripts that you have cleaned of names. It should not write the answers for you. If an interview "quote" appears in your notes that nobody said, you have a larger problem than a price error.
For idea testing before you build anything, testing a start-up idea with AI tools picks up where this tutorial stops. For research that needs a written report with cited sources for clients or a board, market scans with source checks goes further. And if you want a second pair of eyes on your research routine, the next step is a conversation, not another subscription.
A repeatable routine in under three hours
Put it together as a routine you can repeat each quarter. Allow about three hours the first time and ninety minutes after that.
- Spend 20 minutes writing the question list: customers, rivals, prices, and what decision each answer feeds.
- Spend 30 minutes running the claim-table prompt in one assistant, and a second assistant for the same table if you want a cross-check.
- Spend 60 minutes opening every link, using find on the page, and filling the "found on page" column yourself.
- Spend 30 minutes marking unverified claims as hypotheses and drafting five interview questions from them.
- Spend 20 minutes saving dated screenshots and writing the one-page summary.
Cost for the first run is zero on free tiers, or about $20 for one month of a paid plan if you need deep research. Compared with a commissioned market report, that is small, but the checking time is the real cost, and it is the part that stops a wrong number reaching a decision.
Questions founders ask before trusting AI research
Can I rely on an AI-written market size figure?
Treat it as a lead, not a number. Ask for the original report, open it, and find the sentence that holds the figure and the year it covers. Many market sizes trace back to a paid report summary that you cannot read in full. If you cannot see the method, show the figure to nobody outside your own notes.
Is the free tier enough for startup research?
For a first pass, yes. Free tiers of the main assistants can search the web and show links, but deep research modes are limited or absent, and usage caps arrive quickly. Run one real project on the free tier, note where you hit the limit, and only then pay for a month of one plan.
How often should I recheck competitor prices?
Check the price pages of your three closest rivals every month while you are still choosing your own price, and again before any launch or fundraising conversation. Save a dated screenshot each time, so you can show how prices moved rather than relying on memory.
Should I upload my own customer data to these assistants?
Not on a free or personal plan unless you have checked the training and retention settings. Business plans of the main assistants do not train on your content by default, according to the vendors, but you should confirm the setting in your own account. Strip names and contact details before uploading anything about real customers.
Further reads
- How to Track Competitors' Prices and Offers With AI — Set up a repeatable price watch once the first table is built.
- Competitor Battlecards for a Small B2B Team: AI-Drafted, Rep-Checked — Turn the rival table into one-page battlecards for selling.
- How to Use AI in a Small Business: Perplexity for Research Jobs — More research jobs where Perplexity earns its subscription.
- How to Test a New Service Idea With AI Before You Launch It — Test demand for the idea before you build anything.
- What to Check in an AI Tool's Privacy Policy and Terms — Check what each assistant does with the notes you paste in.
- How to Do Competitor Research With AI in One Afternoon — A quick one-afternoon version of the competitor scan.
- Market Analysis AI Tools for Small Business: Costs and Source Checks — ChatGPT, Claude, Gemini, Perplexity and Copilot compared for small-business market research, with list prices and a routine for checking cited sources.
- ChatGPT for Sales and Marketing: B2B Battle Cards and One-Pagers — Prompts and a fact-check routine for a competitor battle card and a one-page service sheet in a small B2B firm.
- AI Agents for Startup Fundraising: Investor Lists, Outreach, Questions — A founder-controlled investor research and outreach workflow with a source log, approval gates and data-room checks.
- AI for Startup Networking: Find and Follow Up With the Right People — A founder's practical system for event shortlists, research, individual follow-ups and a simple relationship tracker.
- AI Tools and AI Development: The Complete 2026 Guide — the AI hub, including every tutorial in the AI-for-business series.
Sources: Perplexity, OpenAI, Anthropic and Google pricing and help pages; OpenAI's deep research help article; Anthropic's help article on Research.