Free AI writing tools, tested before you sign up
We run the same texts through every free AI humanizer, AI detector and paraphraser, then publish the outputs, scores and sign-up walls. No account, no trial.
Browse by category
AI humanizers
Rewrite AI text so it reads more naturally
16 tools tried · 13 reviews
Best free AI humanizers, testedAI detectors
Estimate whether text was written by AI
10 tools tried · 8 scanned
Free AI detectors on the same 6 textsAI paraphrasers
Reword text while keeping the meaning
6 tools tried · guest + free account
4 free paraphrasers without an accountAI grammar checkers
Mark spelling, grammar and punctuation mistakes
2 tools tried · 2 reviews
Ginger, tested as a guestMore categories
New free AI tools are added as we test them.
Latest tests & reviews
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AI grammar checkers · Review ·
Ginger grammar checker review
10 of 13 planted errors fixed as a guest, three left flagged, and an “and I” added to one sentence.
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AI detectors · Review ·
Pangram AI detector review
Right on all three texts at 100%, yet every headline said “Possibly”, and only the rewrite got a “paraphrased or rewritten” flag.
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AI grammar checkers · Review ·
LanguageTool review
All 13 planted errors flagged as a guest, plus “1 more grammar issue — Premium”, and no flags at all on the AI paragraph.
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AI detectors · Review ·
Grammarly AI detector review
76% AI on one guest scan, the lowest of the detectors on this text, then a sign-up box.
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AI paraphrasers · Review ·
Paraphrase Tool review
Two guest rewrites with no captcha or wall, but “over-reliance on automated assistance” came back as “relying too much on computers”.
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AI paraphrasers · Review ·
Paraphraser.io review
Two full guest rewrites, but “academic integrity” became “cheating” and the 400-word box contradicts the page’s 600.
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AI humanizers · Review ·
HumanizeAI.co review
A queue card came before each guest result, and the page’s own panel read 94% and 91% human.
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AI detectors · Review ·
Quetext AI detector review
100.00% on the first scan, then a sign-up wall, though the page says no sign-up is needed.
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AI humanizers · Review ·
HIX Bypass review
Its own panel read 99.0% AI, with all seven detectors flagged, on two different rewrites.
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AI humanizers · Review ·
ESL Humanizer review
A 97/100 meaning score, while its own detector still said 100% AI.
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AI humanizers · Review ·
Humanizer.gg review
An English paragraph came back in German, with a 99.1% Human badge.
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AI humanizers · Review ·
Real Humanize review
A 99.2% Human Score on a rewrite that changed two phrases.
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AI humanizers · Review ·
HumanizeAIText.ai review
Eleven green detector badges on a rewrite that ends in a sentence fragment.
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AI detectors · Review ·
Sapling AI detector review
The humanizer rewrite scored 89.6% AI, yet all seven of its sentences were labelled “100% AI”.
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AI humanizers · Review ·
ZeroGPT AI Humanizer review
Its own check said “Humanized” at 19% AI, while the rewrite dropped commas and added “That’s a help.”
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AI detectors · Review ·
GPTZero review
The scan needs no account, but asking why a text counts as human opens “Sign up to Continue”.
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AI humanizers · Review ·
Humanize.io review
Its own popup rated the rewrite “50% likely to be human-written”; five of seven detectors flagged it.
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AI humanizers · Review ·
Smodin AI Humanizer review
It runs without an account, then blurs everything after the first four sentences of the result.
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AI humanizers · Review ·
HumanizeAI.com review
The page says 200 words per submission; the guest counter read “0 left” after two runs of about 110.
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AI detectors · Review ·
Copyleaks review
The same three verdicts, three days apart: 100%, 100% and 0%, with nothing in between.
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AI humanizers · Review ·
Walter Writes review
Its own score said “Reads as human” on text that began “Remote teams face, remote teams face”.
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AI detectors · Review ·
Originality.ai review
Caught the humanizer rewrite that ZeroGPT called “most likely human”.
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AI paraphrasers · Comparison ·
4 free paraphrasers without an account
QuillBot says “No Sign-up Required”, then asks you to sign up.
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AI humanizers · Review ·
HumanizerPRO review
No sign-up needed, but it wrote “2020 is here” into a text with no year.
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AI detectors · Comparison ·
Free AI detectors on the same six texts
One rewrite scored 0% AI on two detectors and 94.6% on a third.
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AI humanizers · Comparison ·
5 AI humanizers tested without sign-up
By the second test, only one still gave output without an account.
How we test
- Same texts for every toolAI-written paragraphs, rewrites and a human control.
- Free versions, no accountIf a tool needs sign-up, we record the wall instead.
- Outputs published in fullWith screenshots and what we couldn’t test.