
SpecialistThe AI workspace where teams and agents get work done together
Glean records 3,301,875 monthly visits with +0.1% month-over-month growth and Contact for Pricing pricing. ReadTheory records 1,152,495 monthly visits with -14.5% growth and Freemium pricing.
Adaptive reading comprehension practice with instant data for every student
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | glean.com | readtheory.org |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 3.3M (3,301,875) | 1.15M (1,152,495) |
| MoM Traffic Delta | +4.86K (+0.1%) | -194.82K (-14.5%) |
| Primary Market & Share | 🇺🇸 United States (56.6%) | 🇺🇸 United States (67.3%) |
| Direct Visits / mo | 2.63M | 888.62K |
| User Rating | 4.6 | 4.3 |
| Supported Platforms | Website | Website |

Enterprise AI grounded in your company's own knowledge
Ask a question in plain language and get a cited answer assembled from documents, tickets, wikis, and messages across every connected system, with permissions respected.
Reusable agents handle multi-step workflows such as onboarding, account research, or incident follow-up by orchestrating actions across business apps.
Glean automatically picks and routes requests to the right model and reasoning level, giving teams access to 40+ LLMs through a single governed gateway.
Draft on-brand documents, summarise meetings, analyse data, and create content grounded in company context rather than generic model knowledge.
Adaptive reading comprehension practice with instant data for every student
A quick benchmark assessment finds each student's true reading level in around 14 minutes, then the difficulty adjusts continuously as they practice.
Generate reading passages and questions on any topic in seconds, or choose from thousands of standards-aligned fiction and nonfiction texts written by real authors.
One dashboard shows growth, mastery, and gaps across every student, class, school, and district, reporting in Lexile, grade, and ELA standard terms.
Passages, quizzes, graphic organizers, and worksheets are available to print for small groups, substitute days, and screen-free lessons.

SpecialistThe AI workspace where teams and agents get work done together
Gamifies studying by converting materials into interactive quizzes and flashcards, but lacks ReadTheory's continuous reading level adaptation.
Gamifies studying by converting materials into interactive quizzes and flashcards, but lacks ReadTheory's continuous reading level adaptation.
Solves homework problems and generates flashcards across multiple subjects, whereas ReadTheory specializes exclusively in reading comprehension.
Solves homework problems and generates flashcards across multiple subjects, whereas ReadTheory specializes exclusively in reading comprehension.
Free / Open-sourceAutomatically generates free practice tests and flashcards from notes, offering broader study tools than ReadTheory's reading platform.
Free / Open-sourceAutomatically generates free practice tests and flashcards from notes, offering broader study tools than ReadTheory's reading platform.
SpecialistProvides comprehensive AI tools for teachers to build lessons and quizzes, rather than direct student reading practice.
SpecialistProvides comprehensive AI tools for teachers to build lessons and quizzes, rather than direct student reading practice.

Transforms course materials into quizzes and video explainers, providing multimedia study options compared to ReadTheory's text focus.
Transforms course materials into quizzes and video explainers, providing multimedia study options compared to ReadTheory's text focus.
Turn any material into notes, flashcards, quizzes, and podcasts.

SpecialistAdaptive online exam prep that adapts to how you learn
SpecialistAdaptive online exam prep that adapts to how you learn

Builds collaborative enterprise AI agents connected to company knowledge, but offers less robust out-of-the-box universal search.
Builds collaborative enterprise AI agents connected to company knowledge, but offers less robust out-of-the-box universal search.

SpecialistEnables teachers to build guided AI learning spaces, whereas ReadTheory provides automated, independent reading comprehension practice.
SpecialistEnables teachers to build guided AI learning spaces, whereas ReadTheory provides automated, independent reading comprehension practice.
SpecialistBuild, share, and control AI agents that actually do the work
SpecialistBuild, share, and control AI agents that actually do the work

Converts course documents into custom practice questions and study guides, though it lacks ReadTheory's structured reading level progression.
Converts course documents into custom practice questions and study guides, though it lacks ReadTheory's structured reading level progression.