The AI detector index

One entry per AI detector, fourteen fields in the same order, each value with its source and the date it was read: twenty-two cards and nine study records at index version 2026.11.2, twenty-two cards and seventeen records at version 2026.11.3 after eight records were added on 9 November 2026, and seventy-two cards and thirty-five study records at version 2026.11.13 after six more cards, then ten more, then four more (Codeleaks, Illuminarty, Pindrop Pulse and Resemble Detect) and two records (Pegoraro 2023 and Fleckenstein 2024) followed the same day. Where no evidence is published, the field is left empty. How an entry is made The twelfth wave, the last of the twelve-month plan, added no card and thirteen pages on 10 November 2026 at index version 2026.11.13: four questions (student plans, scanned PDFs, music detectors, nonprofit and education pricing), two comparisons (Sapling vs GPTZero, Pindrop vs Resemble Detect), four views (customer support QA, team seats and SSO, handwriting and OCR, mobile apps) and three updates, the 2027 census among them, which counts 72 cards, 12 withdrawn, unreachable or redirected, 35 with a study record and four planned rows held. A team field was written to every card the same day, and two file type counts were corrected.

Every detector, the same fields

Updated November 10, 2026

Every detector in the index with the same fields
Register ID	Detector	Detects	Languages	Free tier	API	LMS	Independent studies
AIDI-D-0001	GPTZero	Text, image	5	Yes	Yes	Yes	16
AIDI-D-0002	Turnitin	Text	7	No	No	Yes	5
AIDI-D-0003	Copyleaks	Text, code, image, video	30	Yes	Yes	Yes	9
AIDI-D-0004	Originality.ai	Text, code	30	Yes	Yes	Yes	7
AIDI-D-0005	Winston AI	Text, image, handwriting	11	Yes	Yes	Yes	2
AIDI-D-0006	Pangram	Text, image, video	24	Yes	Yes	Yes	4
AIDI-D-0007	QuillBot	Text, image	6	Yes	No	No	2
AIDI-D-0008	Grammarly	Text		Yes	No	No	0
AIDI-D-0009	Scribbr	Text	1	Yes	No	No	1
AIDI-D-0010	Sapling	Text	16	Yes	Yes	No	3
AIDI-D-0011	ZeroGPT	Text, image, video		Yes	Yes	No	7
AIDI-D-0012	Phrasly	Text, image	4	Yes	Yes	No	0
AIDI-D-0013	JustDone	Text		Yes	No	No	0
AIDI-D-0014	Proofademic	Text, image, voice	23	Yes	Yes	No	0
AIDI-D-0015	Walter Writes	Text, image, voice	20	Yes	Yes	Yes	0
AIDI-D-0016	Hive	Text, image, video, voice, music		Yes	Yes	No	2
AIDI-D-0017	GLTR	Text		Yes	Yes	No	4
AIDI-D-0018	AIDetectPlus	Text		Yes	No	No	0
AIDI-D-0019	GPT-2 Output Detector	Text		Yes	Yes	No	13
AIDI-D-0020	Codequiry	Code		Yes	Yes	Yes	0
AIDI-D-0021	WasItAI	Image		Yes	Yes	No	0
AIDI-D-0022	Reality Defender	Video, image, voice, text		Yes	Yes	No	0
AIDI-D-0023	Writer	Text		Yes	No	No	5
AIDI-D-0024	Undetectable AI	Text	50	Yes	Yes	No	1
AIDI-D-0025	AI or Not	Image, video, voice, music, text		Yes	Yes	No	1
AIDI-D-0026	Grammarly Authorship	Text		Yes	No	Yes	0
AIDI-D-0027	Turnitin Clarity	Text		No	No	Yes	0
AIDI-D-0028	SynthID	Image, video, audio, text		Yes	No	No	0
AIDI-D-0029	Smodin	Text	100	Yes	Yes	No	0
AIDI-D-0030	BrandWell	Text	1	Yes	No	No	3
AIDI-D-0031	Surfer	Text	1	Yes	Yes	No	0
AIDI-D-0032	Compilatio	Text, handwriting	35	No	Yes	Yes	1
AIDI-D-0033	Quetext	Text	25	Yes	Yes	No	0
AIDI-D-0034	TruthScan	Text, image, pdf documents, video, voice	30	Yes	Yes	No	0
AIDI-D-0035	DetectGPT	Text		Yes	No	No	4
AIDI-D-0036	Sightengine	Image, video, deepfake, voice, music		Yes	Yes	No	1
AIDI-D-0037	Deepware	Video		Yes	Yes	No	0
AIDI-D-0038	Sensity	Video, image, voice, file forensics		No	Yes	No	0
AIDI-D-0039	Codeleaks	Code		No	Yes	No	0
AIDI-D-0040	Illuminarty	Image, text		Yes	Yes	No	1
AIDI-D-0041	Pindrop Pulse	Voice, video	40	No	Yes	No	0
AIDI-D-0042	Resemble Detect	Voice, image, video, music	54	Yes	Yes	No	0
AIDI-D-0043	Decopy	Text		Yes	No	No	0
AIDI-D-0044	Content Detector AI	Text	1	Yes	No	No	3
AIDI-D-0045	GPTKit	Text	1	Yes	Yes	No	2
AIDI-D-0046	PlagiarismCheck	Text	2	Yes	Yes	Yes	1
AIDI-D-0047	Isgen	Text	80	Yes	Yes	No	0
AIDI-D-0048	AI Detector Pro	Text	7	Yes	Yes	No	0
AIDI-D-0049	Fast-DetectGPT	Text		Yes	Yes	No	1
AIDI-D-0050	Paperpal	Text	1	Yes	No	No	0
AIDI-D-0051	Detecting-AI.com	Text		Yes	Yes	Yes	0
AIDI-D-0053	Binoculars	Text		Yes	No	No	2
AIDI-D-0054	Monica	Text		Yes	No	No	0
AIDI-D-0055	Trinka	Text		Yes	Yes	Yes	0
AIDI-D-0056	StealthWriter	Text		Yes	No	No	0
AIDI-D-0057	Wordtune	Text	5	Yes	No	No	1
AIDI-D-0058	Check For AI	Text	1	Yes	No	No	1
AIDI-D-0059	Writefull	Text		Yes	No	No	2
AIDI-D-0060	Passed.ai	Text	1	Yes	No	No	0
AIDI-D-0062	ElevenLabs Classifier	Voice: elevenlabs-generated speech only		Yes	No	No	0
AIDI-D-0063	FakeCatcher	Video		No	No	No	0
AIDI-D-0064	Deepfake-O-Meter	Image, video, voice		Yes	No	No	0
AIDI-D-0065	Ircam Amplify	Music		No	Yes	No	0
AIDI-D-0066	GPT Radar	Text		Yes	No	No	1
AIDI-D-0067	Grammica	Text		Yes	No	No	1
AIDI-D-0068	IvyPanda	Text		Yes	No	No	1
AIDI-D-0069	SEO.ai	Text	50	Yes	No	No	1
AIDI-D-0070	AI Writing Check	Text		Yes	No	No	1
AIDI-D-0071	RADAR	Text		Yes	No	No	2
AIDI-D-0072	Ghostbuster	Text		Yes	No	No	0
AIDI-D-0073	Hiya Deepfake Detector	Voice: the voice in a video or audio played in a chrome tab		Yes	Yes	No	0
AIDI-D-0074	McAfee Deepfake Detector	Voice: ai-generated audio in a video playing in the browser	1	Yes	No	No	0
No entry matches that name. See all detectors

What the studies found

Each published study is its own record, with its sample, the detectors it tested and its results as reported.

All studies

Rankings derived from the index

Find detectors by use case

By feature

Questions about the index

How many AI detectors are in the index?

The index holds seventy-two detector cards and thirty-five study records at version 2026.11.13; sixteen cards date from 8 November 2026, and six cards and the ninth record were added on 9 November 2026, followed by eight more records, six more cards and then ten more cards (Smodin, BrandWell, Surfer, Compilatio, Quetext, TruthScan, DetectGPT, Sightengine, Deepware and Sensity) the same day. Every card carries the same fourteen fields in the same order, from what the tool detects and what it costs to the studies that tested it, and each row of the board above links to its card. New cards are added with a dated line in the corrections log.

Does the index test detectors itself?

No. Every result on the site comes from a published study, kept as its own record with its sample, method and date, or from the vendor's own page, quoted as a claim. The index runs no tests of its own and prints no score of its own; the methodology page sets out what a card records and what it does not.

Why is a field empty on some cards?

Because no source that meets the index's standard was found for it when the card was read: no vendor page states the value and no indexed study reports it. The row is left out rather than filled with an estimate, and the card's revision log shows when the field was last checked.

How are the rankings made?

Each of the twenty rankings sorts the cards on one field of the index data file (the twentieth, launch year, added 10 November 2026, sorts on the year the vendor states and dates every withdrawal), among them study record count, published false positive rate, false negative rate, free tier words per month, language count, stated data retention, named integration surfaces and stated upload formats. Only cards with a published value qualify, ties follow a rule stated on the page, and each page says how many of the seventy-two cards qualified. No overall ranking exists.

Which detectors have been independently tested?

35 of the 72, as of 9 November 2026: GPTZero in eleven study records, the GPT-2 Output Detector in nine, Copyleaks in six, Turnitin, Originality.ai and ZeroGPT in five each, GLTR in three, Pangram, Winston AI and Sapling in two each, and Hive and Scribbr in one. The ranking of independently tested detectors lists them in that order with every record linked.

How do I report an error?

Use the contact page and name the card or record, the field and the source that supports the change. A correction to a published figure is made on the page the day it is confirmed and written to the corrections log with the date, the page, what changed and the source that prompted it.