AI checker that works on whatever you are reading
Option+A gives you a likelihood that the selected text was written by a model, with the specific signals that produced the number.
AI-detection sites want you to paste text into a web form, cap you at a few thousand characters, and hand back one number with no reasoning.
aiCat scores the selection where it sits and shows its work: which phrases read as machine-written and why.
Quality check, step by step
- Select a long enough passageUnder roughly 200 characters no detector is trustworthy, and aiCat will say so rather than produce a number.
- Press Option+AYou get a likelihood, a confidence, and the specific phrases that drove both.
- Read the signals, not the numberUniform sentence length, hedging, cliché connectors, suspiciously perfect punctuation — each one quoted, so you can disagree with it.
What makes aiCat's quality check different
A percentage and the reasons
Uniform sentence length, hedging, cliché connectors, suspiciously perfect punctuation — each one quoted.
Honest about limits
No detector is reliable on short text. aiCat tells you when the sample is too small instead of inventing confidence.
Always on
The likely-AI badge appears on every result window, not just when you ask for it.
Reading, not just grading
Useful for spotting synthetic reviews, generated outreach and padded reports.
People use it for
- Screening applications and submissions
- Vetting content you commission
- Checking a suspicious review or DM
Check the review that reads a little too smoothly
Free to start, 10 aiCatCoins a month, reasoning shown by default.
Why this costs less than a detection subscription
Dedicated detectors start between roughly $10 and $15 a month, which is a reasonable price for an editor scanning commissioned work and an absurd one for the dozen passages a month most people actually check.
In aiCat a check is a few coins out of an allowance shared with everything else, and coins bought outright never expire — the shape that fits occasional use.
aiCat pricing at a glance
| Plan | Price | aiCatCoins / month | Max selection | What it unlocks |
|---|---|---|---|---|
| Free | $0 | 10 | 500 chars | Everything aiCat does, plus free dictation and your own memory |
| Premium | from $6/mo (list $10) | 3 000 | 5 000 chars | Think More, read-aloud, encrypted memory, premium models |
| Team + Offline | from $18/member | 12 000 | 50 000 chars | Edit your memory, MCP access, local models, team sync |
| Enterprise | from $90/member | 150 000 | Unlimited | SSO, audit, best coin rate |
An estimate you can argue with, on text already on your screen
Download for free — no card, no account needed to try it.
Frequently asked
Can I quality check text in any app?
Yes — aiCat reads the selection at the OS level, so it works in native apps, browsers, IDEs, terminals and PDF readers.
Is quality check free?
The Free plan includes everything aiCat does, with 10 aiCatCoins per month. Think More and read-aloud start at Premium, which starts from $6/month.
Which AI model does it use?
By default the cheapest model that is good enough — currently Gemini Flash Lite, falling back to Gonka. You can pick Gemini Pro, Claude, GPT or a local model instead, per task.
Does aiCat work in every application?
Yes. It works at the operating-system level rather than through per-app plugins, so it covers native apps, browsers, IDEs, terminals and PDF viewers alike.
Is my text sent anywhere?
Only the text you explicitly act on is sent to the model you selected, for that one request. Your history is stored locally on your device. Team + Offline can run a local model so nothing leaves the machine at all.