The tool
What the AI style analyzer does
Paste a draft and the AI style analyzer reads it and writes back what it notices about the style: the tone it lands in, how the sentences are built, which words and shapes keep coming back, and where the writing loses its grip on the reader. You get a short written report, in sentences.
This one runs on our AI server, so your text is sent over the network to be analysed. You get 5 free runs per rolling 24 hours, up to 12,000 characters each, and there is no account to make.
Set expectations
You get a written read, not a score
This matters, because most style tools in this category hand you numbers. Gunning Fog, Flesch-Kincaid, SMOG, Coleman-Liau, lexical density with a parts-of-speech split, a punctuation frequency table, a passive-voice percentage, a sentiment figure. Some will even tell you which famous author your prose resembles.
This tool computes none of that. It reads the text and tells you what it sees, in plain sentences you can act on. A readability index is a number you still have to interpret. A sentence saying your third paragraph repeats the structure of your second is something you can go and fix. If you specifically need an index, this is not the tool, and we would rather say so here than after you spend a run.
How it works
How to check AI writing style in three steps
One sample at a time. A few hundred words gives a better read than a single sentence.
- Step 1
- Paste the draft. Anything from 1 to 12,000 characters is accepted in a run.
- Step 2
- Add an instruction if you have one, such as naming the audience, then run it. The text goes to our AI server and the read comes back in a few seconds.
- Step 3
- Read the report against the draft and fix what you agree with. Your remaining runs are shown on screen.
Coverage
What a style read actually covers
These are the dimensions worth asking about, and the ones a read will normally speak to.
- Tone and register
- Whether the writing sits formal, plain, chatty or promotional, and whether it stays there or drifts.
- Sentence construction
- Where verbs sit, how often clauses stack, and whether sentence length varies or sits flat.
- Repetition
- Words, openers and sentence shapes that keep returning. This is usually the most useful thing in the report.
- Hedging and filler
- Phrases that announce information instead of delivering it, and qualifiers that soften a claim into nothing.
- Rhythm
- Whether paragraphs build or simply list. Flat rhythm is the most common reason writing reads as tired.
The underlying cause
Why AI sentences fall into the same shapes
A model picks the likely next word, and likely words are the ones that fit almost anywhere. That preference compounds. Openers converge on the safest few, connectives converge on moreover and furthermore, and paragraphs converge on the same three-beat shape: claim, elaboration, restatement.
The result is text with no errors in it that still reads as machine-made. Nothing is wrong at the sentence level. The problem is that every sentence was built the same way, and a reader notices the pattern long before they can name it.
Why it matters
What flat AI style actually reveals
Readers do not usually think "this is AI". They think the piece is generic, and they stop. Uniform sentence length, an opener that could belong to any article, and connectives doing the work that an argument should do are the three tells that arrive first.
For anything published under a name, that is the real cost. Not a detector result, but a reader who decided in two paragraphs that this page was not written for them.
Straight answer
Does a style flag prove the text was written by AI?
No. Style patterns are signals, not evidence of authorship. Plenty of human writing is formulaic, and plenty of AI writing is not. A style read tells you how a piece reads, not who or what produced it.
The analyzer is instructed never to claim certainty about authorship, and we will not tell you what any third-party detector would say about your draft. Use the report as an editing prompt, which is the only thing it can honestly be.
Who it's for
Who uses the AI style analyzer, and when
Editors taking a first pass on a draft they did not write, where the useful question is not "is this correct" but "why does this read as thin". Content teams checking whether a piece sounds like the rest of their site.
Students reading back their own work before a deadline, under whatever their institution says about AI tools. Anyone who has read their own draft too many times to hear it any more.