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The best AI market sizing tool depends on whether you need licensed published numbers, private company data or an estimate for your exact category. Statista and IBISWorld suit published industry figures, while PitchBook, Crunchbase and CB Insights suit private company and funding research. MarketAgent provides TAM, SAM and SOM market sizing with the method and sources written out, from $99 a month billed yearly. Its AI market research also connects that estimate to a market map and competitor pricing.
Before choosing a subscription, run the demo market map with your category and region. This one time homepage preview helps you assess the format before buying a paid plan.
What is the best AI tool for market sizing
MarketAgent is the best fit when you need a sourced TAM, SAM and SOM for a specific category rather than a published industry total. Choose Statista or IBISWorld when the deliverable requires published figures, and a private company database when company records and transactions are the main inputs.
The practical distinction is between buying evidence and buying an analysis. A database can supply valuable inputs without answering how much of a market your product can serve. MarketAgent writes out top down and bottom up reasoning alongside the competitor map. It uses public sources, so a licensed database can still be the better purchase when private records determine the answer.
Market sizing tools compared by price and method
These tools solve different parts of a sizing assignment. Compare the output you need to defend, then the subscription price. A company list, an industry forecast and a category specific revenue estimate are different purchases.
| Tool | What it gives you for sizing | Method shown | Price as listed or publicly estimated |
|---|---|---|---|
| Statista | Published statistics and market forecasts by industry and country | Published figures for your sizing model | Starter listed at 199 USD a month billed yearly; Professional listed at 1,399 USD a month billed yearly for up to 5 users |
| IBISWorld | Analyst written industry reports with revenue, growth and five year forecasts | Industry revenue and forecast analysis | IBISWorld's help center lists a single US Industry Research Report at 2,850 USD and an Industry Spotlight at 800 USD. Memberships are quote only. SpendHound reports averages of about 7,700 USD a year for SMB customers and about 42,000 USD for enterprise |
| PitchBook | Private company, deal and valuation data | Your model using company and deal data | Quote only; third party estimates from about 12,000 to 70,000 USD a year |
| Crunchbase Pro | Company and funding records to count players bottom up | Your bottom up count from records | About 49 USD a month billed yearly or 99 USD monthly per third party pricing guides |
| CB Insights | Private company profiles and analyst market maps | Your sizing model using profiles and maps | Quote only; Vendr median about 47,000 USD a year |
| General chat assistants including ChatGPT, Claude and Gemini | Fast first drafts of a top down estimate | Draft reasoning; numbers often unsourced or stale, so verify every input | Consumer plans around 20 USD a month |
| Spreadsheet plus templates | Your own model | Your own formulas and assumptions | Time cost only |
| MarketAgent | TAM, SAM and SOM for the category you define, plus market map, competitor pricing tiers and monitoring | Top down and bottom up, method written out, every input linked to its public source with capture date, estimates labeled Estimate | From $99 a month billed yearly ($199 monthly) |
Prices are public list prices or third party estimates and change. Check the vendor before you buy, including billing terms and what the quoted package includes.
How much does market sizing software cost
Market sizing software ranges from chat assistants around 20 USD a month to private company databases costing tens of thousands annually in third party estimates. MarketAgent starts at $99 a month billed yearly or $199 monthly. Published industry reports can also be purchased individually, as the IBISWorld prices above show.
MarketAgent's Startup plan costs $199 monthly or $99 a month billed yearly. Team is $799 monthly or $399 billed yearly, Business is $1,999 monthly or $999 billed yearly, and Enterprise is $4,999 monthly or $2,499 billed yearly. Each yearly figure is the monthly equivalent of an annual payment. Compare MarketAgent pricing against your research volume and monitoring needs.
Budget for the work after purchase too. If someone must reconcile category definitions and rebuild every assumption, a cheaper subscription can leave substantial analyst work. A report purchase may still be economical when its industry definition matches the assignment exactly.
Can ChatGPT do market sizing
ChatGPT can draft a market size estimate and explain the arithmetic, but you must verify every input before using it in a pitch deck or board memo. General chat assistants can return stale or unsourced numbers. A plausible calculation does not establish that the buyer count, price or category boundary is correct.
Use a chat assistant when you already have checked inputs and want help organizing the argument. If your bottleneck is finding and documenting those inputs, compare the evidence trail instead of the fluency of the answer. MarketAgent attaches a public source link and capture date to every fact and labels estimates Estimate. That makes review possible without treating generated prose as evidence.
Which market sizing method do investors trust
A bottom up estimate is generally easier to defend when buyers can be counted and annual spending can be justified. Use a top down industry figure as a cross check and explain any difference. Investors need visible assumptions and a credible path from TAM to SAM and SOM, rather than a tool's approval stamp.
TAM is the total addressable opportunity. SAM narrows it to customers your product and route to market can serve. SOM reflects what you can realistically win within a stated period, considering competition and sales capacity. Our guide to TAM, SAM and SOM for B2B software explains the distinction in detail.
For an investor deck, put the market definition and assumptions beside the headline figure. Keep the supporting sources available for diligence. A founder preparing that deck also needs clean financials, so turn your bookkeeping export into board ready financial statements before circulating the supporting documents.
What to check before you buy a market sizing tool
Evaluate the tool against the question in your next deliverable. A broad category can look well covered while your actual buyer segment is poorly documented. Ask to see how the output handles missing evidence and where your own judgment must enter.
- Category fit. Can the output distinguish your buyer, use case and region from the broader industry?
- Traceability. Can a reviewer open each input's source and see its capture date?
- Method. Are the arithmetic, exclusions and assumptions written out?
- Uncertainty. Are inferred values labeled as estimates rather than presented as observed facts?
- Deliverable fit. Can you share the supporting evidence in the format your board or client needs?
- Ongoing value. Will competitor pricing and monitoring matter after the initial sizing assignment?
Public evidence has limits. When an assignment depends on undisclosed purchasing behavior or private contracts, plan for additional research. A sourced estimate should expose the remaining questions.
Also check what the model counts. A database of vendors tells you who sells into a category, not how many customers could buy your product. Funding totals describe investment activity, not customer spending. Those records can help define competitors and segments, but the revenue opportunity still needs a justified buyer count and spending assumption.
Which tool fits which buyer
For a founder choosing a paid tool for a pitch deck, MarketAgent fits when the immediate need is a category estimate with its reasoning attached. The comparison of market research tools for startups covers the broader buying decision.
For a consultant or strategy lead, Statista and IBISWorld are useful when published industry context is central to the deliverable. MarketAgent fits a narrower market entry question that also needs competitors and pricing. The IBISWorld alternative comparison explains that distinction.
For corporate development, PitchBook, Crunchbase or CB Insights may be the better core purchase when private company and transaction coverage drives the assignment. MarketAgent complements that work with public source category research. Read the CB Insights alternative comparison if you are deciding which output you need.
For a team that already owns the relevant data subscriptions, the decision may be whether another database adds evidence or duplicates access. Keep the existing licenses that answer recurring questions. Buy a category research tool when connecting those questions to a documented market estimate is the missing work.
Frequently asked questions
Does MarketAgent have a free plan?
No. MarketAgent offers a one time demo market map on the homepage. Paid plans begin with Startup at $99 a month billed yearly or $199 monthly. Use the preview to assess the output before choosing a subscription.
Does a market report give me TAM, SAM and SOM?
An industry revenue figure can inform TAM, but SAM and SOM depend on your product, geography, customers and ability to win business. Check whether the purchase provides inputs or an estimate built around those boundaries.
Can MarketAgent replace PitchBook for private company data?
MarketAgent uses public sources. Choose PitchBook when private company, deal and valuation data are the reason for buying. Choose MarketAgent when you need sourced category sizing connected to competitors, pricing tiers and monitoring.
Can I use a spreadsheet instead?
Yes, when you already have reliable inputs and can document the model yourself. A spreadsheet keeps formulas visible. Research software earns its place when collecting and tracing the evidence is the work holding up your deliverable.
Choose a plan through MarketAgent pricing when you need sourced sizing for your category, or run the demo market map to inspect the format first.