An estimated 2 billion people use AI. Most take its word for it.

It gets things wrong — and sounds sure when it does. Before you believe it, check it.

Paste anything an AI told you, an ad or an offer. Add the real source or terms if you have them. Xyntherium points out what doesn’t hold up and quotes the exact words.

Example · Fictional brand

Quillfen Home Internet, an invented brand

The ad says:: “Cancel anytime, no fees.”
The fine print says:: “Cancellation requires 30 days’ notice. A $50 early termination fee applies.”
Contradicted:: “no fees” vs. “$50 early termination fee”
Missing condition:: “30 days’ notice”

Let Xyntherium keep this scan to study pressure tactics. Emails and phone numbers are masked first; we keep the text, the flags and the result. Off unless you tick it. Details

I run a business →Ask six AIs at once →

Why this matters

2 billion

Menlo Ventures estimates that 2 billion people use AI worldwide. (2026)

7 in 10

In a 2026 survey of US and UK consumers, 7 in 10 AI chatbot users who felt responsible for checking said they check answers only sometimes, rarely or never. (F-Secure)

The problem isn’t that AI can be wrong. The problem is that you often don’t know when it is.

Sources & methodology →

What are you checking?

Something I was told or sold

Offer CheckBetaFree

See the pressure tactics, quoted word for word, and what the claims leave out.

Check an offer

An answer I got from AI

Verify

Paste the answer and the document it should follow. See what it left out, with the quote.

Check an answer

Or ask six AIs and see where they disagree →Agreement between AIs isn’t proof.

What my business tells customers

Help Center Check + Verify

Find help articles and AI answers that disagree with your own policies, and catch them when a policy changes.

For businesses

An AI app I’m building

Verify API, MCP server, Verify Gate

Check a drafted answer against the passages it should follow, from your code, your AI tools or your release pipeline.

For developers

For businesses

Every word is real. The claim is still wrong.

Help Center Check

New · Live

Your policies change. Does your AI know?

When your prices, policies or procedures change, Help Center Check flags help articles and AI answers that may now disagree, with the evidence.

$99/month founding rate, 14-day trial.

Check my help center Start trial

Policy changes → the answers that depended on it are found → they’re re-checked.

Verify

For businesses running an AI chatbot or support bot.

Paste your policy or product info, paste an answer your chatbot gave, and Verify shows what it got wrong or made up, with the line from your document that decides it. If you don’t run a chatbot, you don’t need Verify.

What do I paste?

Your document, for example:

Your return or refund policy
Your pricing page
Your terms of service
A product FAQ or spec sheet

What your chatbot said, from:

Your chatbot’s conversation history or an export of it
A support ticket where the bot replied
A screenshot a customer sent you
Automatically, through the API, before the answer is shown

Try Verify For developers

More for businesses →

Why trust us

Code confirms the quote.

A model can suggest which line supports a claim. Code then confirms that the line actually exists in the source. And we publish what we miss: on our fresh 300-item constructed benchmark, Verify’s code-only layer accepted 8 of 220 deliberately flawed answers; the best tested AI judge accepted 52. Verify missed its own 2% target, and we publish that.

These results are for Verify’s benchmark. They don’t measure Offer Check or every Xyntherium product.

What a check can and can’t tell you: code checks that quoted evidence exists in the text you supplied. That doesn’t prove the source itself is right. Comparing several AIs shows agreement, not proof.

Every product here works the same way: find the exact line a claim depends on, confirm it in code, and keep a record.

See the benchmark →About Xyntherium →

What we publish

Building with AI? Verify API, MCP server and Verify Gate →

Built on the Xyntherium engine

Verification is not only our product. Other software runs its checks on the same engine.

True Level AI Business Check

live

Checks what AI assistants say about a local business (hours, services, contact details) against the business’s real details.

truelevelmarketing.com/ai-check →

Planned: Decision Watch.

Questions

Is it really free?: The box at the top runs Offer Check free, three scans a day, with no account needed. Verify’s free plan includes 1,000 checks a month.
Do you keep what I paste?: Offer Check keeps nothing you paste and nothing from the result, unless you tick research use. The Verify free tool keeps what you paste and its result for one day, then deletes them. Where does my text go? →
Can I check something privately?: Tick Private check next to the button: nothing is saved on our servers, and your text goes only to Anthropic to run the check. Pick “No AI at all” and it stays on our servers, though code alone finds less. Private check, in full →
Can I choose which AIs see my question?: Yes: use Choose AIs in multi-model chat, or save a default under Account, AI providers, with a “US-developed models only” preset. A tool that needs an AI you’ve excluded tells you before anything is sent. Which AI companies see my text →
What can’t it tell me?: It checks what you paste against the text you supply, and code confirms that the quoted words are really there. It can’t prove that the source itself is right.
Is this for businesses?: Yes: Help Center Check flags help articles and AI answers that may now disagree with your own policies, at a $99 a month founding rate with a 14-day trial. Developers can call Verify from their own code, their AI tools or their release pipeline.
Who’s behind it?: Xyntherium is built by AugustBrooks LLC in Austin, Texas. You can reach us at admin@truelevelmarketing.com.

Plans and prices are on the pricing page →