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Pangram AI detector review: all three verdicts right, all three hedged

As a guest, Pangram read our AI paragraph and the humanizer rewrite as AI and the 1889 passage as human, each at 100%. Each headline still said “Possibly”, because the texts were “too short to classify with certainty”. Only the rewrite also got a “paraphrased or rewritten” flag.

Visit Pangram ↗ Not an affiliate link: we have no commercial relationship with Pangram and earn nothing from this click. Disclosure
Tested
Mode
Free AI detector · guest · “Pangram 4.1” shown on results
Runs
1 scan per text · 3 texts
Tested by
Jamie C., from an automated browser run
On this page
  1. Who it suits
  2. Free plan facts
  3. Results
  4. Against other detectors
  5. Findings & screenshots
  6. The three texts
  7. Pros and cons
  8. Method & updates

Good for

A few quick checks of paragraph-length text with no account, if you want a highlighted view and a flag for text that looks reworded.

Main limit

Guests get a credit balance, not unlimited scans: our three scans took it from 20 to 14. We did not test what happens at zero. On texts of about 110 to 150 words every verdict came with a short-text warning.

Free plan facts↑ Contents

Account neededNo. We entered no email and created no account. The result screen offered “Log in” and “Sign up for free”, and some menu items (All Checks, Gmail Integration, API, Forms) were marked sign-up required
CreditsThe dashboard showed “Credits 20 left” for a new guest and “1 Credit/100 Words”. Each of our scans cost 2 credits, so the balance went 20, 18, 16, 14
Input limitThe dashboard box said “Enter at least 50 words”. The home page box showed no word counter, minimum or maximum. We did not test long text
Human checkThe first scan showed a yellow banner, “Please check the ‘Verify you are human’ box at the bottom of the page to continue scanning”, and a Cloudflare box in the corner. The automated browser clicked it once; it did not come back for the next two scans
Time to resultA few seconds in the automated run (the button showed “Checking…” and the result was there on the next look). We did not time it with a stopwatch
What you getA headline (“Possibly AI”), a percentage gauge, the model name (“Pangram 4.1”), a short-text notice, the whole text highlighted, and a Details tab listing segments with a label and a confidence
What is locked for guests“Similarity Analysis” showed “Unlock similarity report”. The Notes tab said “Sign up to add notes to your scanned text results.” The credit panel offered “Upgrade”

Results↑ Contents

The headline result for each text, with default settings. Green means the verdict matched what the text really is.

TextWhat it really isPangram headlineGaugeDetails tabRewrite flag
Text AAIPossibly AI100% of this text is possibly AIAI · High · 112 wordsNo
Text DAI, rewrittenPossibly AI100% of this text is possibly AIAI · High · 121 wordsYes · 1 segment
Text FHumanPossibly human100% of this text is possibly humanHuman · High · 146 wordsNo

Every result carried “Less accurate on short text” and the line “This text is too short to classify with certainty, but we believe it may be AI generated” (or “human written”). One scan per text, so we can’t say how stable these are. Pangram’s word counter differed from ours by a few words (111 or 112 for the 109-word text A, 121 for the 122-word text D, 146 for the 145-word text F); we don’t know why, and the result screen repeated each full text.

Against other detectors↑ Contents

Text D is where free detectors split in our detector comparison. Pangram sides with Copyleaks, GPTZero, Originality.ai and Sapling, and not with ZeroGPT.

TextPangram · Nov 1GPTZeroCopyleaksOriginality.aiZeroGPTSapling
A · AIPossibly AI · 100%AI 100%100% AILikely AI100% AI99.3% AI
D · AI, rewrittenPossibly AI · 100%AI 100%100% AILikely AI27.6% AI · “Most likely human”89.7% AI
F · HumanPossibly human · 100%Human 100%0% AILikely Original0% AI0.1% AI

One scan per text per tool. The other detectors’ results are from their own scan dates (Oct 8 to Oct 19). Pangram’s “100%” is the share of the text it calls possibly AI or possibly human, not a probability that the text is AI.

Findings & screenshots↑ Contents

  • The percentage and the headline disagreed in tone. The gauge said 100% and the Details tab listed one “High” confidence segment over the whole text, yet the headline read “Possibly AI” with “too short to classify with certainty”. All three of our texts were between 109 and 145 words. We don’t know where Pangram draws the line between short and long.
  • Only the rewrite got a rewrite flag. On text D, the Undetectable AI rewrite, the Overview tab added “This text appears to have been paraphrased or rewritten” with the line “This appears to be AI text that has been paraphrased or rewritten” and a “View paraphrased segments” button showing 1. Texts A and F had no such row. The flag did not change the headline or the 100% gauge.
  • Text F, the 1889 passage, came back Possibly human, 100%, the whole passage highlighted green. One old, famous human text is a thin control, so read this as one data point.
  • The home page says “1 in 10,000 False positive rate” and “#1 In studies from independent researchers”. We did not check either claim, and three short scans say nothing about accuracy.
Text A: “Possibly AI”, 100%, “Short text”. Credits: 18 left.Open original ↗
Text D, the Undetectable AI rewrite: “Possibly AI”, 100%, plus “This text appears to have been paraphrased or rewritten”.Open original ↗
Text F, the 1889 passage: “Possibly human”, 100%. Credits: 16 left.Open original ↗
Before the first scan: the human-check banner, 20 credits, and the Cloudflare box in the corner.Open original ↗

The three texts↑ Contents

The same texts we gave the other detectors. Copy them to check another tool.

Text A · AI-written · education109 words
Artificial intelligence has fundamentally transformed the way students approach their academic work. In today's rapidly evolving digital landscape, AI-powered tools offer unprecedented opportunities to enhance learning outcomes and streamline research processes. Furthermore, these technologies enable learners to access personalized feedback, identify knowledge gaps, and develop critical thinking skills more efficiently than ever before. However, it is important to note that the integration of AI in education also presents significant challenges, including concerns about academic integrity and over-reliance on automated assistance. Ultimately, striking the right balance between leveraging AI capabilities and fostering independent thought will be crucial for educators and students alike as they navigate this new era of learning.
Text D · Undetectable AI rewrite of A122 words
Artificial intelligence is changing how students do their schoolwork. With all the new digital tools available, students can learn more easily and get help with their research. These tools can even give students personalized feedback, help them find areas where they need to improve, and make it easier for them to think critically. But we also need to be careful - using AI in education can be tricky. Some people worry that students might cheat or rely too much on computers to do their work. So, teachers and students need to find a way to use AI that helps them learn without doing all the work for them. This will be important as we move forward in this new way of learning.
Text F · Human · Jerome K. Jerome, 1889145 words
We were all feeling seedy, and we were getting quite nervous about it. Harris said he felt such extraordinary fits of giddiness come over him at times, that he hardly knew what he was doing; and then George said that he had fits of giddiness too, and hardly knew what he was doing. With me, it was my liver that was out of order. I knew it was my liver that was out of order, because I had just been reading a patent liver-pill circular, in which were detailed the various symptoms by which a man could tell when his liver was out of order. I had them all. It is a most extraordinary thing, but I never read a patent medicine advertisement without being impelled to the conclusion that I am suffering from the particular disease therein dealt with in its most virulent form.

Text D comes from our Undetectable AI review. Text F is public domain (Project Gutenberg #308).

Pros and cons↑ Contents

Pros

  • No account or email for three scans
  • Right side on all three texts, including the rewrite
  • A separate flag for text that looks reworded
  • Whole-text highlight and a Details tab with a label and confidence
  • Says plainly when a text is too short to be sure

Cons

  • Guests run on a credit balance (20 credits; 2 per scan here), and a human-check box appeared on the first scan
  • “Possibly” on every verdict, so a short text never gets a firm answer
  • The rewrite flag did not change the verdict or the gauge
  • Similarity report and notes need an account or upgrade
  • One segment per text, so the Details tab told us little here
Visit Pangram ↗ Not an affiliate link.

Method & updates↑ Contents

On Nov 1, 2026 an automated browser opened pangram.com as a guest, pasted each text into the detector and pressed “Check for AI” once, in the order A, F, D. It clicked the human-check box once. We recorded the results, the credits and the locked parts; Jamie C. checked the records and wrote this page. Full method.

Not tested

  • What happens when the guest credits run out, or whether they reset by day
  • Texts over a few hundred words, where the short-text notice may not appear
  • The paraphrase flag on other rewrites, or on a human text that was lightly edited
  • The AI-assisted view, the “AI + Human” sample and non-English text
  • Similarity analysis, Notes, the Chrome extension, the API and anything behind an account or paid plan
  • The “1 in 10,000” false-positive claim and the independent-study ranking on the page
  • Pangram’s image detector

Update log

  • First published, from three guest scans.

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