GPTZero runs $23.99 a month, or $12.99 billed yearly, for 300,000 words. Where the detector holds up, where the plans bite, and who should pay.
$23.99/mo Read reviewNotebookLM is free. Paid limits start at $4.99 a month with Google AI Plus, $19.99 with Pro. What each tier adds, and what the free plan does.
$4.99/mo Read reviewMindgrasp turns lectures into notes, flashcards and quizzes, but publishes no pricing. We checked on October 3, 2026 and found no public price.
no published price Read review