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Give AI the facts that help customers choose you.

AI gets 1 in 4 business facts wrong, and customers blame you, not the AI. Truthbased finds the conflicting claims about your brand, turns them into facts your team approves, and keeps them current where AI reads as your business evolves.

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1 in 4: Herringbone, 2026 · Photo: Shwung He, Unsplash

Every day, people ask AI about businesses like yours.

The answer comes from whatever the AI found: an old blog post, a review, a guess. With Truthbased it comes from facts you confirmed, with the page they came from.

A woman at a desk in warm evening light, reading her phone
Is Fennwick Pro still $12 a seat, and is there a free trial before I commit my whole team?

Photos: Andy Luo, Max Shilov, Belinda Fewings, on Unsplash. The people and businesses in the questions are made up.

What happens when your brand joins Truthbased.

AI gets 1 in 4 business facts wrong.

Herringbone checked 1,200 AI answers about 600 businesses in 2026. The study

AI is getting your price wrong.

It says $10. Your price is $12.It guessed from an old blog post. Writers repeat it.

Without Truthbased, AI tells customers your Pro plan is $10 a seat when it is $12: ChatGPT, Claude, Google and Perplexity guess it from an old blog post, and a partner blog and a review site repeat it. Truthbased reads your site and finds the two pages disagree. You confirm $12 once, and the old post goes on your fix list. Truthbased updates your truth page, llms.txt, Google tags and the MCP connection, and each place that reads them now says $12. The old page is fixed, and AI is checked again.

Turn your website into a source AI can trust.

We find the facts across your website and show you where they came from. You verify what’s true once. From then on, your team and AI tools have one reliable source to work from.

Every fact has proofSee exactly where it came from.
We catch contradictionsConflicting pages get flagged.
You verify what’s trueA person approves each fact.
See what AI saysAsk ChatGPT, Claude and Perplexity about you.
What you get for every website
  • Every fact on your pages, with the line it came from
  • Pages that disagree, flagged before AI repeats them
  • A fix list: the page, the line, what to change
  • A public truth page AI tools can read, on paid and lifetime plans
  • What AI tools like ChatGPT, Claude and Perplexity say about you

When an AI tool asks us for a fact, we give the one you confirmed. If we don’t have it, we say so. We never guess.

A blue and white peppermint

Facts go stale. Yours get re-read.

A fact is only true for as long as your site says it. Prices change, teams grow, a page gets rewritten. Freshness is the schedule that notices: it re-reads your pages and re-checks what they claim.

Weekly on monthly plansStarter, Growth and Agency re-read your site every 7 days and read new pages as they appear.
Every 30 days on lifetime plansOr weekly with the Freshness add-on, $5 a month per 25 websites.
Unchanged pages cost nothingOnly a page that changed counts against your allowance.
Visible on your truth pageLast checked, and how often. Visitors and AI both see it.
How freshness works

What the AI says about you.

We ask the AI six things about you, once or every week, and mark each answer right or wrong.

Running websites for clients?

Check every client’s website the same way, show them the proof, and hand over exactly what to change.

A workspace per clientEach client’s websites, facts and people stay apart.
Clients see the proofInvite them as viewers. They can read everything; only your team signs off.
A fix list you can hand overPage, line and what to change, downloaded as a file for the client or their developer.
One AI key, or one per clientAdd your key once for every client, or give a client their own.

What changes when the facts are signed.

It became less about AI visibility and more like another quality-control layer for the websites we manage. It has already helped us catch real issues and save a lot of time.

Fouad Bourchachen — Runs a web agency

Fouad Bourchachen, Runs a web agency at null

Where your confirmed facts go.

A truth pageA public page of your confirmed facts. People and AI tools can search it.
Google tagsschema.orgHidden tags Google reads, built from your confirmed facts.
A file for AI readersllms.txtThe file AI tools look for. We keep it in line with your confirmed facts.
One line on your siteTruth TagPaste it once, and AI tools are pointed to your facts.
AI assistantsMCPClaude, Cursor and others ask us for a fact. We answer with the confirmed one.

Things people ask.

Can I use it for my clients’ websites?

Yes. Give each client their own workspace, invite them as viewers so they can see the proof, and hand over the fix list. On monthly plans that is the Agency plan.

What will it cost me besides the plan?

Only what your AI provider charges for your own key. Reading a page costs a fraction of a cent. You can set a monthly limit in your account.

What happens if my business changes its prices?

The next read of your site finds the change and asks you to confirm it. Once you do, your facts update everywhere. With the weekly check on, you then see whether AI has caught up.

How often do you re-check my site?

Every week on Starter, Growth and Agency. Every 30 days on lifetime plans and on Free, or weekly with the Freshness add-on. A re-read only counts a page that changed.

Which AI tools does Truthbased reach?

Your confirmed facts are published where ChatGPT, Claude, Perplexity, Google and others read. You can then ask them about you, once or every week, and see what they get right and wrong.

We already have llms.txt. Why this?

Your llms.txt can go out of date. Ours rebuilds whenever your confirmed facts change.

Does Truthbased write content?

No. It doesn’t make up facts or write content. It only uses facts you confirmed from your own website.

What does “bring your own key” mean?

Connect your own key from OpenAI, Anthropic, Perplexity or OpenRouter once. You pay your AI provider directly, with no added AI usage fees from us.

Let the engine check your site.

Start freeThe Free plan needs no card.