AI Detector

TranscriptAI vs GPTZero

A free, accurate AI detector, with a deep AI-forensic judge that catches humanized AI, explicit protection for non-native writers, and a built-in humanizer. Here’s an honest, side-by-side comparison.

Feature
TranscriptAI
GPTZero
Free check with no signup
1 free check, then free account
Limited, with word caps
Per-sentence highlighting
Deep AI-forensic judge (catches humanized / paraphrased AI)
Advanced scan
Explicit non-native / ESL protection
Partial
Honest “Uncertain” instead of a forced verdict
Detects disguised AI (homoglyph / invisible characters)
Plain-language “why flagged” explanation
Limited
Built-in humanizer (rewrite + re-score in one place)
Before/after humanizer diff
Downloadable PDF report
File upload (.txt / .docx / .pdf)
No text stored by default (privacy-first)
Stores scans

Comparison based on publicly available information as of 2026. GPTZero is a trademark of its respective owner; features change over time. Try our tool below and judge for yourself.

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Text to analyze
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0 words · 0 chars

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Sensitivity

1 free check (sign up for unlimited).

Your AI-likelihood score and a per-sentence breakdown will appear here.

Frequently asked questions

For most everyday checks our free tier is comparable, and signed-in Deep analysis adds an AI-forensic judge that catches humanized or paraphrased AI that purely statistical detectors miss. We also protect non-native writers explicitly and return an honest “Uncertain” instead of a forced verdict. No detector, ours or GPTZero’s, is 100% accurate, so always pair results with human judgment.

Detect AI, then humanize it

One free check, no signup. Sign up free for Deep analysis, saved history, and PDF reports.