French AI detector

GPTCleanup Pro's French AI detector reads a passage of French text and reports the patterns typical of AI-generated French writing: guillemet spacing, apostrophe style, punctuation spacing before ; : ! ?, and the small set of connectors a model reaches for far more than a person does, with each signal named rather than folded into one number. It answers the question people actually search, is this French text AI-written, with a breakdown rather than a verdict.

It is a server tool by necessity: the pattern model is too large to run in a browser, so text is sent to our AI server to be scored and the result returned to the page. You get 5 free checks in any rolling 24 hours, no account required.

French typography carries its own rules, and whether a passage follows or ignores them is informative on both sides. No single item below is disqualifying; the read is a function of how many co-occur in one sample.

Guillemets missing their narrow space

Correct French typesetting is « texte » with a narrow no-break space (U+202F) after « and before ». Straight quotes, or guillemets set tight against the text, both stand out.

No space before ; : ! ?

French convention places a space before these marks: « Bonjour ! Comment allez-vous ? ». Punctuation set the English way, with no space, reads as typeset without French rules applied.

A straight apostrophe held consistently

Correct elision uses U+2019, l’ami, aujourd’hui, not the ASCII apostrophe '. A passage that is perfectly consistent one way, never a mix, is itself worth noticing.

En effet and par ailleurs overused

Both are legitimate connectors. Deployed as a default way to open every new point, they function as filler rather than argument.

Formal connectors arriving in sequence

De plus, par conséquent, en outre, appearing one after another rather than because the logic of the passage calls for them.

One round trip to the server, then a reasoned result.

Step 1

Paste the French sample. A longer passage gives the model more structure to weigh.

Step 2

Run the check. The text is sent once to our AI server, scored against the patterns above, and nothing further is done with it.

Step 3

Review each flagged pattern and its stated reasoning. The output is an argument you can inspect, not a number you're asked to trust.

Not with confidence. Most models default to the same tidy, connector-heavy French regardless of which one produced it, frequently skipping the narrow-space typography a French typesetting program would apply automatically, so these signals point toward machine-written French broadly rather than any single model.

A prompt requesting Québécois phrasing, or a specific register, erodes most of this signal in one step. A strong match is grounds for a closer look, not a determination of authorship.

French has solid training data overall, but formal and administrative French sits unusually close to what this detector is built to notice, and that limitation should be stated rather than treated as neutral.

Administrative French

Il convient de noter que, il est à noter que: the style administratif already leans on the same hedges and connectors for reasons that predate AI by a century.

Machine-translated French

Text translated from English by a tool like DeepL commonly reads as grammatically correct but stiff, missing the narrow-space typography native writing usually carries.

Rule-following non-native writers

En effet, par ailleurs and de plus are standard connective structure in French-language courses, so a learner following instruction closely produces the same shape a model defaults to.

A flag from this tool is a signal, not a finding, and copy-paste between systems routinely strips the exact typography this detector reads for.

Preserve your drafts

Earlier versions are the clearest evidence a piece was composed, not generated whole.

Check what your editor did to your apostrophes

Many tools silently convert U+2019 to a straight apostrophe on paste, turning a genuine signal into a false one.

Request the named signal

A specific pattern, a connector or a spacing habit, can be examined on its own terms. An unexplained score cannot.

Editorial teams screening French submissions, instructors weighing a second opinion on unusually polished essays, and writers reviewing their own drafts before submission.

5 free checks per rolling 24-hour window, tracked without an account. The window reopens continuously rather than resetting at a fixed hour, which covers ordinary use, one submission, one paragraph under review, without friction.