GPTZero
AI text detector in AI tools
People recommend it as a strong signal for spotting likely AI-generated text, often ranking it above other detectors. Critics say it is not perfect and produces false positives on human writing.
People recommend it as a strong signal for spotting likely AI-generated text, often ranking it above other detectors. Critics say it is not perfect and produces false positives on human writing.
49 people gave an opinion
- recommend it
- 18
- criticize it
- 31
- approval share
- 37%
Recommended in 10 of 13 months
- November 2025: recommended
- December 2025: recommended
- January 2026: recommended
- February 2026: recommended
- March 2026: not recommended
- April 2026: recommended
- May 2026: recommended
- June 2026: recommended
- July 2026: recommended
- August 2026: not recommended
- September 2026: recommended
- October 2026: recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 18 people recommend itNeeds 10 or more, met.
- 0.5 recommenders for every criticNeeds 2 to 1 or better, not met.
- Recommended in 10 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Strong signal for AI-written text
“GPTZero is by no means perfect, but it agreed this was likely generated.”
Comment from 21 May 2026 in “No Slop Grenade” “GPTZero is not full-proof but I think it's likely right on this one”
Comment from 11 Feb 2026 in “I started programming when I was 7. I'm 50 now and the thing I loved has changed” “which is not perfect but is pretty spot on quite often”
Comment from 10 Jul 2026 in “You're Not a Better Engineer Because You Type Git Commands by Hand” - Comment from 4 Apr 2026 in “Mercurial Dyson – a plan for the disassembly of planet Mercury”
- Comment from 27 Jul 2026 in “If your code leaked tomorrow, would it matter?”
- Comment from 18 Apr 2026 in “Slop Cop”
Better than other detectors
“GPTZero is much better at handling humanized outputs.”
Comment from 25 Jun 2026 in “Exploring the internal representations of Pangram 3.3.2” “actually GPTZero was the best of the bunch”
Comment from 30 Dec 2025 in “Everything as Code: How We Manage Our Company in One Monorepo” “I've always found it to be a better judge”
Comment from 27 Sep 2026 in “There is more to code review than (automatable) detection” Useful for checking pages and drafts
“There is a useful GPTZero-based provenance tool for editors (and readers) to check if a page contains AI-generated text”
Comment from 28 Oct 2026 in “Wikipedia's Cleanup of AI-Generated Content” “For the text of the paper, paste any section after the "Introduction" section into https://gptzero.me/”
Comment from 9 Feb 2026 in “Shifts in U.S. Social Media Use, 2020–2024: Decline, Fragmentation, Polarization” “you should be happy to have a tool that can find them before you publish”
Comment from 23 Jan 2026 in “GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers”
What people warn about
Each mark is one comment
Flags human-written text as AI
“My son has been accused by bullshit AI detection as having used AI, and it has devastated his work quality.”
Comment from 22 Jan 2026 in “GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers” “I got a 100% AI generated mark for a post in... 2022, and 2023. Both before AI tools were around.”
Comment from 30 Dec 2025 in “Everything as Code: How We Manage Our Company in One Monorepo” “GPTZero and other AI detectors have far more false positives than correct guesses.”
Comment from 3 Aug 2026 in “Critical CVE issued for hallucinated SQLite vulnerability” - Comment from 27 May 2026 in “I'm Tired of Talking to AI”
- Comment from 15 Apr 2026 in “Google Gemma 4 Runs Natively on iPhone with Full Offline AI Inference”
Marketing claims lack evidence
“This is a marketing post where they provide no evidence that any of these are hallucinations beyond their own AI tool telling them so”
Comment from 24 Jan 2026 in “GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers” “I think it is true and intentionally vague for marketing purposes. And FWIW, I support the effort writ large”
Comment from 23 Jan 2026 in “GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers” “some of these were included in the dataset mainly to amplify the author's product pitch”
Comment from 22 Jan 2026 in “GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers” - Comment from 22 Jan 2026 in “GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers”
Paywalls and fake scores
“I've tried to test their tool as well, but was totally paywalled.”
Comment from 22 Jan 2026 in “GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers” “If you upload a large document, they'll give a fake 100% AI rating behind a blur until you pay up”
Comment from 23 Jan 2026 in “GPTZero finds 100 new hallucinations in NeurIPS 2025 accepted papers” Inconsistent results, easy to evade
“it suggested they're 100% written by a human, tried this article, it says 100% written by AI”
Comment from 3 Aug 2026 in “Why we write our own C and C++ inference engines” “GPTZero claimed with 80% confidence that it was human-written but AI polished”
Comment from 21 Jul 2026 in “Over 30% of new ArXiv submissions now read as AI-written” “It's an extremely easy fence to jump over, as demonstrated by the article.”
Comment from 2 Jul 2026 in “AI fake news complaining about how AI fake news is the death of real news”
What people recommend instead
The same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Pangram | 175 | 185 | 49% | 12 | — | — |
| GPTZeroThis page | 18 | 31 | 37% | 10 | — | — |
What people said
40 of the 54 comments that mention it, newest first. Each links to the original comment.
“There is a useful GPTZero-based provenance tool for editors (and readers) to check if a page contains AI-generated text”
“I've always found it to be a better judge”
“Pangram and GPTZero also think it is written by a bot.”
“even GPTzero gives 100% on a snippet I copied”
“it suggested they're 100% written by a human, tried this article, it says 100% written by AI”
“GPTZero and other AI detectors have far more false positives than correct guesses.”
“checking it on gptzero proves it to be the case”
“GPTZero claimed with 80% confidence that it was human-written but AI polished”
“which is not perfect but is pretty spot on quite often”
“It's an extremely easy fence to jump over, as demonstrated by the article.”
“GPTZero is much better at handling humanized outputs.”
“none of those actually work, and the false-positives rates are sky-high”
“GPTZero is by no means perfect, but it agreed this was likely generated.”
“an excellent LLM-authored text detector”
“These detectors are a scam falsely flagging non-native English speakers”
“I've found that these tools may give false negatives from a well-prompted model, but false positives are rare.”
“It's not perfect, but it's a pretty strong signal.”
“GPTZero is not full-proof but I think it's likely right on this one”
“For the text of the paper, paste any section after the "Introduction" section into https://gptzero.me/”
“They were put on blast to sell a product.”
“This is a marketing post where they provide no evidence that any of these are hallucinations beyond their own AI tool telling them so”
“messing with other people's lives because of it”
“I think it is true and intentionally vague for marketing purposes. And FWIW, I support the effort writ large”
“at least they're contributing to the common good”
“It was 84% confident, that it was entirely human writing”
“Using these as definitive AI markers seems like working backward from a conclusion.”
“If you upload a large document, they'll give a fake 100% AI rating behind a blur until you pay up”
“you should be happy to have a tool that can find them before you publish”
“Labeling human carelessness as "AI fabrication" is libelous.”
“which also falsely claims they can detect AI generated text, a fundamentally impossible task to do accurately”
“The author curates the data and crafts a story about it.”
“I've tried to test their tool as well, but was totally paywalled.”
“Does their quality of scrutiny match the quality of their communication.”
“some of these were included in the dataset mainly to amplify the author's product pitch”
“My son has been accused by bullshit AI detection as having used AI, and it has devastated his work quality.”
“their bullshit AI detection hallucinates a student using AI”
“actually GPTZero was the best of the bunch”
“I got a 100% AI generated mark for a post in... 2022, and 2023. Both before AI tools were around.”
“Tools like GPTzero are incredibly unreliable.”
“I'm finding the GPTZero share links difficult to understand.”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.