GPTZero

The Best Writing Replay Tool for Teachers (That Isn’t Draftback)

Need to see a replay of how a piece of writing was created? GPTZero's Writing Report is here to help.

GPTZero’s Massive AI Detector Update for Summer 2025

GPTZero’s new Model 3.7b improves drastically on the latest language models from the top providers, just in time for the new 2025/2026 school year.

How Testing Our Own Writing Patterns Is Helping Us Preserve What’s Human

Inside Our New ‘Compare with AI Text’ Tool

We’re bringing more transparency to AI detection, with plain-language explanations that show how your text overlaps with AI writing.

Introducing Natural Language Explanations in Advanced Scan

Today, we take a major step forward in helping reviewers better identify and understand signs of AI or human writing. Our latest update to the Advanced Scan feature shows what AI-generated text looks like as well as the reasoning behind each detection.

Behind the Scenes: Introducing “Lightly edited by AI”

With our latest model update, GPTZero introduces higher granularity in our AI detector by adding a new classification called “Lightly edited by AI” or “Polished by AI”. This tag identifies text originally written by a human and later improved by AI.

Behind the Scenes: Multilingual Detection Update

Back in April, we released a major update (Model 3.1m) that outperformed competitors across the board. Since then, we’ve trained on more challenging human and AI data, and have achieved a less than 1% false positive rate on all supported languages (Model 3.2m).