Claude writes.
WhyUser tests.

Every run with Claude is a first run. Ask it the same page twice and you get two different answers.

Re-run the same page
Same verdict

Claude returns a new answer every time.

Findings sourced
100%

Each quote checked against the page it came from.

Claims graded
84%

473 sealed before the outcome existed, misses left in.

The honest part

We run on frontier models, Claude among them.

The model is the cheapest part of this. Claude reasons extremely well, and for drafting it beats us outright.

Use Claude for

  • Writing. Drafting the page, cutting it, tightening it.
  • Volume. Twenty headlines in ten seconds.
  • Getting unstuck. The blank page.
  • Speed. An answer in seconds, not thirty minutes.

Use WhyUser for

  • The go or no-go call before you spend.
  • The role that vetoes and the handoff that breaks.
  • A verdict you can re-run and attribute a fix to.
  • Evidence you can forward instead of defend.
Side by side

Four things a test has to do.

Ask any tool, including us.

ClaudeWhyUser
DOES IT REPEATSEALED RE-RUN
Same page, asked twiceA different answerThe same verdict
Fix one section, re-runA fresh review of everythingOnly the part you edited can move
Vendor upgrades the modelLast month’s answer silently changesVerdicts frozen under the version that made them
DOES IT SHOW ITS SOURCEEVIDENCE LAYER
Quote traced to a documentSounds right. Nobody checkedMatched against the fetched page, or dropped
Knows who wrote the evidenceNo. A rival’s page and a buyer review are both textAuthor class on every source, carried into the prompt
Flags a single-source findingNoYes, marked as such
DOES IT READ LIKE YOUR BUYERBEHAVIOURAL STATES
Reader mindsetPatient. Reads to the bottom. CooperativeDistracted, skeptical and ideal, mixed to match your channel
Reading behaviourCareful reading onlyScans, hunts, abandons
How roles combineOne voice in several hatsVeto rules, not averages. One blocking role sinks it
Handoffs between rolesNot modelledSeven chains, each scored healthy, at risk or broken
DOES IT REMEMBERSIGNAL IDENTITY
Is this last week’s findingNo way to know there was a last weekMatched by meaning, so identity survives new wording
Do the buyers stay currentA saved prompt is frozen the day you write itRe-compiled from live evidence on every run
Ever graded for accuracyNo. Nobody checksSealed before launch, then scored HIT or MISS by you
BOTHBOTH
Time to an answerSecondsAbout 30 minutes
Writes your copyYes, and wellNo. Not what we do
Best used forDrafting, tightening, variantsThe go or no-go call before you spend
The objection

“But we would connect it to our own data.”

You can, and it helps. Attaching evidence is the easy part now. Collecting it is not. A search returns pages. What we run is a pipeline.

Reads, does not accumulate

It cannot tell you this week is last week.

Across four weeks of real buyer evidence, zero findings carried over between weeks. The themes were there every week, in different words.

No author class

A rival’s page and a buyer review are both text.

Point any agent at your category and much of what it finds was written by companies that sell against you.

Nothing is checked

A fluent quote and a real one look identical.

Cleaned, classified by author, and every quote checked against the page it came from. A search does none of that.

Check us

Two tests. Neither requires trusting us.

On Claude, four minutes.

Two fresh sessions, no shared history. Same page, same question. If the answers disagree, you have an opinion generator.

On us, one email.

Send three campaigns you already ran and know the results of. We predict the ranking. You check it.

Common questions

Answers, briefly.

Can I just use Claude to review my landing page?

For drafting and variants, yes. For a spend decision, no, because every run is a first run.

What if we use Claude Cowork with our data connected?

It reads your evidence well. It cannot tell you it read the same thing last week.

Is WhyUser just a wrapper around Claude?

The model is the cheapest part. The product is sealed re-runs, quote verification, author classification and a graded record.

Claude keeps getting better. Does this expire?

No. Fresh sampling is a feature for writing and a defect for testing, so the gap widens as Claude improves.

What does a committee add over playing five roles?

The handoffs. Five roles played in one pass agree with each other. Real committees do not.

Before you spend

Fail in the test.
Win in the market.

Claude writes a fresh answer every time. WhyUser returns the same verdict, sourced and graded.