AI Detectors and How Post-Secondary Institutions Are Using Them

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What AI Detectors Are Colleges Using in 2026?

Following our article on how artificial intelligence (AI) is disrupting post-secondary education models, I thought you would find the use of AI detection tools by schools an interesting addition to the conversation.

Post-secondary schools follow a mishmash of policies regarding the use of AI. Some disable the use of AI detection entirely because of concerns regarding accuracy. Others have recently adopted the tools listed below.

Students concerned during the writing process can submit drafts to Solvely AI Detector. This site provides free AI-generated content checking, sentence-level feedback, and other detection options. It isn’t foolproof. Work run through it may still be flagged as non-human-written.

Students seeking to improve the clarity and sentence flow in their writing can use Solvely AI Humanizer.This site can test, review and refine content to ensure its original meaning is retained with citations verified.

Neither of the Solvely tools, however, provides guarantees that work submitted won’t get flagged.

Which AI Detectors Do Colleges Use?

Colleges encounter several AI detection platforms, although availability doesn’t always mean a particular feature is enabled. In order of what is being adopted most to least, here is a list.

  • Turnitin – used for similarity checking and AI detection.
  • Copyleaks – used to detect plagiarism and AI content.
  • GPTZero – used to detect AI-written passages.

Turnitin is currently the most widely adopted. Many U.S. schools already use Similarity, the site’s comprehensive plagiarism detection service. However, plagiarism checking and AI detection are separate functions. 

Naming a few U.S. schools: Regis University uses Turnitin’s AI writing detection while Georgetown and Vanderbilt Universities disable it. The University of Illinois Springfield uses Copyleaks. Many others have yet to adopt an AI detection tool, relying on the ability of assessors and markers to spot patterns of AI-generated speech in submitted work.

How Do Colleges Detect AI-Generated Writing?

When enabled, AI detection software examines language patterns that may resemble machine-generated content, including vocabulary, sentence structure, and predictability.

When a student submits an assignment, the tool creates a detection report for instructors to interpret according to the school’s policies.

However, AI detectors cannot directly establish who wrote a document. A high AI probability result is not verification of academic misconduct. When looking at the potential for AI misuse, instructors should also consider the student’s writing history, research notes, citations, previous assignments, and their ability to explain the arguments presented in submissions.

Can Colleges Accurately Detect ChatGPT Writing?

Colleges can use software designed to recognize ChatGPT-generated content, but accuracy varies.

Human-written passages sometimes receive high AI scores, while edited AI-generated content goes undetected.

AI-detection tool research raises concerns about false positives involving non-native English writers, particularly when minimal knowledge of the language leads to predictable patterns, suggesting AI-generated content.

It is limitations like this that explain why some universities discourage relying on automated AI-detection tools when making disciplinary decisions. So, if running a student essay through an AI detector, an investigation needs to consider much more than the submitted work as definitive proof of human-generated authorship.

How to Find Which AI Detector a College Uses?

Students can check official university information on plagiarism and AI usage. They can search the school’s website for terms like “AI detection,” “Turnitin,” or “Copyleaks.” They can read the institution’s syllabus, assignment instructions, and academic integrity policy and review guidance provided on sites like Canvas, Moodle, or Blackboard.

If the student still has questions, they can ask an instructor about which tools are being used and how results are evaluated.

What to Do if an Assignment Gets Flagged?

An assignment independently written can be AI-flagged for some of the reasons described above. What’s important is to keep outlines, earlier drafts, research notes, citations, and version history. These work-history materials help explain how an assignment was researched and written.

To improve writing, consider testing content using Solvely’s AI Humanizer. It can help revise awkward phrasing, adjust sentence flow, and improve readability.

Always review output for factual accuracy, preserved citations, and compliance with course AI-use rules. Rewriting text does not establish human authorship or guarantee that a detector will change its assessment.

If an instructor raises concerns, show the work history.

Frequently Asked Questions

Do all colleges use Turnitin?

No. Some institutions use Turnitin, others prefer Copyleaks, and some disable AI detection entirely.

Does Canvas automatically detect AI writing?

No. Canvas is a learning management system. AI detection depends on separately integrated and enabled services.

Can professors prove ChatGPT use?

An AI detector alone cannot prove that ChatGPT wrote an assignment. Instructors may examine additional evidence and institutional policies.

Final Verdict

There is no universal AI detector currently in use by post-secondary institutions. Turnitin is widely encountered, Copyleaks is used at some institutions, and individual educators may explore other tools.

Students should understand their school’s policies, preserve evidence of their writing process, and interpret automated scores cautiously.

Tools such as Solvely AI Detector and Solvely AI Humanizer can support reviewing and refining drafts, but they should never replace academic integrity or genuine evidence of authorship.