Verdicts you can defend
Every finding points at the exact sentence and names the exact problem. When you push back on a claim, you can say why.
How well does what you are reading actually hold up?
Paste anything: a LinkedIn post, a news article, an expert claim. Verithink scores the sources and the reasoning, names the thinking traps in plain words, and saves the verdict to your private library.
Free plan: a monthly allowance of jobs, no card, the number stated in the app under Plans and Pricing. Available worldwide.
"Everyone knows remote teams are less productive. A Stanford study proved it, and every serious CEO has already called people back to the office."
Sources 24
Reasoning 38
Shaky ground
Thinking trap: appeal to authority
A "Stanford study" is cited with no author, no year and no link. "Everyone knows" and "every serious CEO" argue by crowd, not by evidence.
How it works
Paste. Verdict. Library.
- 01
Paste
A post, an article, an email, a book excerpt: paste it, add screenshots, or add a PDF. One job per 6,000 words; the app shows the count before you send.
- 02
Get the verdict
Two scores, Sources and Reasoning, an overall verdict, and findings in plain words: the fallacy named, the sentence quoted.
- 03
Make it stronger
Improve writes one item per finding: a suggested wording in your own voice where the reasoning slips, the evidence that would carry a claim where it is unsupported. More honest, never more persuasive; no invented sources.
- 04
Share the score card
When your own piece scores high enough, publish its Verithink score card: a public page with the scores and what holds the piece up, ready for LinkedIn, X, Facebook, WhatsApp, Instagram and TikTok, with a badge for your newsletter. Each card carries the Checked with Verithink® mark. See an example card.
- 05
Build your library
Every evaluation saves privately. Curate what holds up: a personal knowledge base of checked content.
What you get
Not vibes. Specifics.
Grounded in the science
The scoring rubric is built on the academic literature of argumentation, source credibility and fallacies: the thinking traps catalogued since the Greeks, applied to what you read today.
Your library, your thinking
Everything you evaluate is saved privately, for you alone. Keep what holds up, delete what does not, and build a record of content you have actually checked.
Familiar from the first second
A sidebar, a composer, sign-in with an email code or a password. It works like the AI tools you already use every day, on purpose.
Inside Claude too
Ask Claude to check a text with Verithink without leaving the chat. The verdict comes back into the conversation and lands in your library. See how.
Security & privacy
Serious security, honestly told
Your sign-in, your way
A one-time email code, or a password if you prefer. Sign-in runs on Microsoft Entra External ID; Verithink never stores a password.
Your library is stored in the UK
Built on Microsoft Azure, with your library stored in the United Kingdom. Evaluations are processed within Microsoft Azure.
Fully isolated accounts
Isolation is built into the database itself. One account can never read another's content.
Never trains AI models
Your content is analysed, not learned from. Evaluations are processed within Microsoft Azure, under terms that do not train on your prompts.
Why we build this
The age of AI multiplies plausible nonsense. It has never mattered more to take responsibility for what we read and repeat.Read the manifesto →
For organisations
Verithink for Business
The same evaluation your people already use, with company accounts and licences your organisation administers, and a way of running Verithink that fits your rules. Tell us what you need and we will talk it through.
Public cloud, multi-tenant
The standard service: one Verithink, run by us within Microsoft Azure, with every account isolated from every other. Available today; start with a free account.
Private cloud, dedicated instance
A single-tenant Verithink, run by us for your organisation alone within Microsoft Azure, in an environment nobody else shares.
In your Azure tenant
Verithink deployed into your own Azure subscription, so your content stays in your tenant and your region, under your controls. We operate it with your permission, or hand it over to your team.
On-premises
Verithink installed on infrastructure you run. We will tell you plainly what it involves.
Whichever way you run it: your content is never used to train AI models, accounts are isolated by design, data is encrypted in transit and at rest, and evaluations or a whole account can be deleted at any time.
Start free
Ready when you are
Sign in with your email, by code or by password. Every account starts on a free plan with a monthly allowance of jobs, no card, the number stated in the app under Plans and Pricing. Available worldwide.