Proctor AI vs Turnitin Feedback Studio: Grader Or Similarity Checker?
Turnitin Feedback Studio is best known for its similarity index and originality reporting, licensed by universities and larger schools worldwide. Proctor AI is an AI grading agent that reads handwritten and typed answer sheets, grades each against your rubric, and runs its own integrity analysis that flags copying and AI-written text with page-level evidence.
If your goal is enterprise-scale similarity checking, Turnitin is the incumbent. If your goal is to actually grade the papers, and get integrity signals as a byproduct, Proctor AI does both in one workflow.
What Turnitin does well
- Enterprise-scale similarity checking against a large corpus.
- Widely accepted as evidence in university academic-integrity processes.
- Integrations across major LMSs at the institutional level.
- Familiar procurement for large schools and universities.
Where Proctor AI is different
- Grades every paper against your rubric, not just checks for similarity.
- Reads handwritten answer sheets in bulk from one scanned PDF.
- Free plan for individual teachers, not an institutional licence.
- Integrity analysis is built in and produces page-level evidence, not just a percentage.
- Detects AI-written text as part of the same grading run.
- Claude MCP so grading and integrity checks happen inside a chat with Claude.
Feature-by-feature comparison
| What matters to you | Proctor AI | Turnitin Feedback Studio |
|---|---|---|
| Automatic grading against a rubric | Yes, for every paper | Manual, with feedback tools |
| Bulk handwritten grading from a class PDF | Yes | Limited |
| Copying detection | Yes, evidence per pair | Yes, similarity index |
| AI-written text detection | Yes | Yes, add-on |
| Free plan for individual teachers | Yes | No |
| Claude MCP integration | Yes | No |
Which one should you pick?
If your institution has already standardised on Turnitin for similarity checks, keep it and add Proctor AI as your grader. If you are a school, coaching centre, or individual teacher looking for one tool that grades handwritten papers and flags copying at the same time, Proctor AI is the more complete workflow.
Frequently asked questions
Is Turnitin a grading tool?
Turnitin Feedback Studio is primarily a similarity and integrity platform with feedback tools. Grading is manual. Proctor AI automates the grading and provides integrity evidence in the same run.
Does Proctor AI detect AI-written text?
Yes. Proctor AI flags stylistically anomalous answers and provides evidence, not a verdict. The teacher decides.
Can I use Proctor AI alongside Turnitin?
Yes. Many institutions keep Turnitin for similarity checking and add Proctor AI as the grader for handwritten papers.
Is there a free plan?
Yes. Proctor AI has a free plan with no card required, so a teacher can grade a real class before deciding.