Why the education plan is free

With a school or university email, you can check up to 50 papers a month free. You need no card and no purchase order.

Who qualifies

Anyone with a school or university address. Addresses like these qualify:

• .edu
• .edu with a country code, such as .edu.au
• .ac with a country code, such as .ac.uk
• .sch with a country code, such as .sch.uk
• School districts on k12 state domains

Without a school email

The free plan gives you 2,000 words a day.

Why it costs nothing

The detector is ours. We run it ourselves on a cloud GPU provider, and no other company's detector sees the text. The free school plan is how we get it in front of teachers, so a teacher with thirty essays due can check one without waiting for a purchase order or a pilot. The paid plans for heavier use pay for it, once billing opens. A school that later wants more volume or a contract can write to us.

The same models

The education plan offers the same three models as every other plan today: the default, a second model trained against humanizer tools, and a third trained on student essays, either of which you can choose instead. There is no lighter model for schools.

Limits

It does not check for plagiarism or images, and it does not fetch web addresses. It will not decide anything for you.

A flag should be reason to look closer and not verified proof of cheating.

The numbers behind it

Our detector's default model flagged none of 600 human-written papers it had never been trained on in its release test. The 95% ceiling on its false-flag rate is 0.498%. The second model, trained against humanizer tools, flagged 2 of the same 600, a ceiling of 1.05%. The default model also flagged none of 1,195 essays by English learners that were kept out of training as a fairness test. Those essays come from one university English language program, written between 2005 and 2012. Every human-written document we tested was written before 2022.

The limits are on the model card.