AI Text Classifier
Retired AI text detector from OpenAI, discontinued July 2023 due to low accuracy.
Don't bother. With a 26% true positive rate and a 9% false positive rate, this tool was never reliable. Its retirement confirms that. For AI detection today, consider GPTZero or Originality.ai instead. This one is best used as a case study in detection limitations.
Verified 14d ago · liveness 58/100 · cite: rightaichoice.com/tools/ai-text-classifier
- Researchers studying AI detection history
- Educators learning about detection pitfalls
- Journalists covering AI text detection
- Policy makers examining AI misinformation
- Reliable AI detection (only 26% accuracy)
- Short text detection under 1,000 characters
- Non-English text or code
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Skip the AI Text Classifier if you need a functional AI text detector—it's discontinued and was never accurate enough for real-world use.
The AI Text Classifier was free, but it's now retired. For current AI detection, expect to pay for services like GPTZero or Originality.ai, which offer tiered plans. There's no advantage in the discontinued tool.
In short
AI Text Classifier — Retired AI text detector from OpenAI, discontinued July 2023 due to low accuracy. Best for Researchers studying AI detection history, Educators learning about detection pitfalls, Journalists covering AI text detection. Free to use.
What's new in AI Text Classifier
Checked 14 days agoAcross the latest 1 update: 1 launch.
What people actually say about AI Text Classifier — is it worth it?
We scanned public community sources for AI Text Classifier on Jul 3, 2026 and could not establish that the discussion we found is about this tool rather than something else sharing its name. Our own analysis of that scan says the posts were off-subject. Rather than publish a sentiment score built on the wrong subject, we publish nothing here and re-run the scan.
Viability Score
How well maintained and how widely used is AI Text Classifier? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: September 2026
How we score →Key Features
- AI-written text detection
- English text optimization
- 1,000-character minimum input
- Confidence threshold tuning
- Web app interface (discontinued)
- Fine-tuned on paired human/AI text
- Public feedback collection
- Educator resource link
- Research on text provenance
- Free to use (historical)
About AI Text Classifier
The AI Text Classifier was OpenAI's first public attempt at detecting AI-written text, launched January 31, 2023. It was a language model fine-tuned on pairs of human-written and AI-written text, designed to flag content generated by AI systems like ChatGPT. In OpenAI's own evaluations, it correctly identified only 26% of AI-written text as 'likely AI-written' while incorrectly labeling human-written text as AI-written 9% of the time. The tool required at least 1,000 characters for any reliability, performed poorly on non-English text and code, and could be evaded by edited AI text. Because of this low accuracy, OpenAI retired the classifier on July 20, 2023, and shifted focus to more effective provenance techniques. Today, the tool is offline and no longer usable. For anyone exploring AI text detection now, tools like GPTZero and Originality.ai offer more practical, though still imperfect, alternatives. The AI Text Classifier stands as a cautionary case study in the limits of AI detection.
Behind the Verdict
The AI Text Classifier is a historical artifact now. It launched with optimism but quickly showed its limits. For buyers evaluating AI text detectors, this tool is not an option because it's discontinued. If you need a working detector, look at alternatives like GPTZero or Originality.ai. That said, the classifier's story carries lessons: detection is probabilistic, not absolute; short and non-English text is a weak spot; confidence doesn't equal accuracy. Educators, journalists, and researchers might find the classifier's failure instructive. But for practical use, it's a dead end. The tool was free, which was its only advantage, but even that is moot now. Avoid paying for any 'AI detector' that claims perfection; even the best have trade-offs. If you're deciding whether to rely on AI detection, understand that no tool is a silver bullet. The AI Text Classifier is a reminder of that.
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Real-world workflow fit
Concrete scenarios for the personas AI Text Classifier actually fits — and what changes day-one when you adopt it.
Investigating the history of AI text detection tools
Outcome: Documents the AI Text Classifier's launch, performance, and retirement as a case study.
Reviewing AI detection options for classroom policy
Outcome: Uses the classifier's failure to inform policies that emphasize academic integrity over reliance on detectors.
Writing about AI text detection challenges
Outcome: Cites the classifier's 26% true positive rate as evidence of detection limits.
Use Cases
- Supplement human judgment when evaluating text source
- Identify potential AI-generated content in education
- Raise awareness about AI detection limitations
- Inform discussions on misinformation and authenticity
- Historical analysis of AI detection evolution
Models Under the Hood
as of 2026-09-01
Limitations
- The AI classifier is no longer available as of July 20, 2023, due to its low rate of accuracy.
- In evaluations, it correctly identified 26% of AI-written text as 'likely AI-written' while incorrectly labeling human-written text as AI-written 9% of the time.
- The classifier's reliability improves with longer input text.
- It should not be used as a primary decision-making tool, but as a complement to other methods of determining the source of a text.
as of 2026-09-01
Verification history
We have re-verified AI Text Classifier 7 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
Showing the 6 most recent of 7 verification passes.
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published AI Text Classifier tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0/mo
Ideal for
Researchers exploring early AI detection tools, without financial commitment.
What this tier adds
This was the only tier—free access, no cost, but the service is now discontinued.
Where the pricing makes sense
The company stage and team size where AI Text Classifier's pricing actually pencils out — and where peers do it cheaper.
The AI Text Classifier was free, but it's now retired. For current AI detection, expect to pay for services like GPTZero or Originality.ai, which offer tiered plans. There's no advantage in the discontinued tool.
Setup time & first value
How long it actually takes to get something useful out of AI Text Classifier — broken out by persona, not the marketing-page minute.
As a discontinued tool, there is no setup—it's offline. For historical research, you can review OpenAI's blog post and evaluation data immediately. For alternatives, setup takes minutes to hours depending on the service.
Switching to or from AI Text Classifier
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- ↗To GPTZero: Sign up and upload text for instant AI detection, with higher accuracy and better interface.
Resources & Guides
Tutorials & Learning
YouTube returned 6 videos for “AI Text Classifier”, and we withheld 5: 5 did not mention AI Text Classifier. Showing the 1 we can prove is about AI Text Classifier.
Official links
Featured Head-to-Head Comparisons
Ai Text Classifier vs Surge Ai
AI Text Classifier is a discontinued, low-accuracy free tool unsuitable for production. Surge AI is an active, expert-driven platform for frontier AI alignment with rigorous benchmarks and a proven track record (e.g., Microsoft's MAI-Thinking-1). For any serious AI safety or RLHF work in 2026, Surge AI is the clear choice.
Ai Text Classifier vs Praktika
If you need a discontinued AI detection tool, AI Text Classifier is obsolete—look elsewhere. Praktika is a solid choice for intermediate language learners wanting affordable, on-demand speaking practice with AI tutors, but beginners or desktop users should consider alternatives.
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