AI Text Classifier
Discontinued GPT-based AI text detector (Jan–Jul 2023).
A well-intentioned but ultimately flawed tool, discontinued after six months due to low accuracy. It is no longer available and should not be used. For current AI detection needs, consider alternative detectors like GPTZero or Originality.ai, but always verify with human review.
- Educators exploring AI detection methods
- Journalists researching AI-generated content
- Policy makers concerned with AI misinformation
- AI researchers studying detection limitations
- Reliable detection of AI-written text
- Short text detection (<1000 characters)
- Non-English languages or code
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Skip the AI Text Classifier if you need reliable AI detection for any purpose, especially short texts, non-English content, or code, or if you require an active tool—it was discontinued in July 2023.
Free while available, but now discontinued. No current pricing applies.
In short
AI Text Classifier — Discontinued GPT-based AI text detector (Jan–Jul 2023). Best for Educators exploring AI detection methods, Journalists researching AI-generated content, Policy makers concerned with AI misinformation. Free to use.
What's new in AI Text Classifier
Checked 11 days agoAcross the latest 1 update: 1 changelog entry.
Viability Score
How likely is AI Text Classifier to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →Key Features
- Fine-tuned GPT language model for AI text detection
- Predicts likelihood of AI-written text
- Designed for English text
- Improved reliability with input >1000 characters
- Public web interface (discontinued)
- Supplements human judgment
- 9% false positive rate
- 26% true positive rate
- Sparked discussions on AI literacy
About AI Text Classifier
OpenAI's AI Text Classifier was a fine-tuned GPT model launched in January 2023 to predict whether a text was AI-written. It aimed to help educators, journalists, and researchers identify AI-generated content from systems like ChatGPT. However, due to a low accuracy rate—correctly identifying only 26% of AI-written text with a 9% false positive rate—OpenAI discontinued the tool as of July 20, 2023. The classifier performed best on English texts over 1,000 characters but was unreliable on short texts, non-English languages, and code. It was intended as a supplement to human judgment, not a standalone detection tool. Despite its limitations, it sparked important conversations about AI literacy and the challenges of detecting AI-generated text. OpenAI has not released a replacement as of 2026. The company continues to research provenance techniques and has focused on developing safety measures for audio and visual content. For now, the AI Text Classifier remains a historical artifact in the evolution of AI detection tools.
Behind the Verdict
The AI Text Classifier was a bold experiment that highlighted the inherent difficulty of reliably detecting AI-generated text. Its 26% true positive rate and 9% false positive rate made it unsuitable for any high-stakes decision-making, and its discontinuation was the right call. It did, however, serve as an important educational tool, spurring discussions about AI literacy and the need for better provenance mechanisms. OpenAI's subsequent focus on audio and visual content detection, along with newer initiatives like Daybreak security tools and GPT-5.6 Sol, show the company has moved on from text-only detection. For anyone needing AI detection today, the classifier's limitations underscore that no tool is fully reliable, and human judgment remains essential.
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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.
A teacher pastes an essay into the classifier to check if it was AI-generated.
Outcome: The classifier returns a likelihood score; the teacher uses it as one of several signals, but ultimately relies on their own judgment due to the tool's low accuracy.
A journalist runs a press release through the classifier to assess if it was AI-written.
Outcome: The classifier provides a tentative label, but the journalist treats it skeptically and cross-checks with other verification methods.
Use Cases
- Supplement human judgment when evaluating the source of a text.
- Identify potential AI-generated content in educational settings.
- Raise awareness about AI literacy and detection challenges.
- Inform discussions on misinformation and content authenticity.
Models Under the Hood
as of 2026-07-15
Limitations
- The classifier is unreliable on short texts and has a high false positive rate (9%), meaning it often mislabels human-written text as AI-written.
- It should not be used as a primary decision-making tool.
- As of July 20, 2023, the tool is no longer available due to low accuracy.
as of 2026-07-06
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
Free
Ideal for
Anyone curious about AI detection; no cost barrier for experimentation.
What this tier adds
Free web-based access; the only tier ever offered.
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.
Free while available, but now discontinued. No current pricing applies.
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.
No setup required. The web interface was accessible immediately. However, the tool is now discontinued and unavailable.
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: Similar detection goals but actively maintained and more accurate.
- ↗To Originality.ai: Offers plagiarism checking and team features for professional use.
Resources & Guides
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