Every classroom has students reading at meaningfully different levels, and manually rewriting a single lesson's core text into three or four leveled versions is one of the most time-consuming forms of differentiation a teacher can attempt. Diffit exists to solve exactly that one problem, and largely that problem alone, generating the same content at multiple reading levels in the time it would take to rewrite a single paragraph by hand.
What is Diffit?
Diffit is a free AI tool, with an optional paid tier, that generates differentiated reading materials, comprehension questions, and vocabulary breakdowns at multiple reading levels from any topic, article, or uploaded text. Rather than functioning as a broad, all-purpose teacher AI platform, Diffit is deliberately narrow, focused specifically on the differentiation problem: taking one piece of content and adapting it so students reading at different levels can all access the same underlying material. This narrow focus is by design, and it's the reason Diffit is consistently cited as one of the strongest tools specifically for mixed-ability classrooms, including ESL, IEP, and gifted education contexts.
Key features
Multi-Level Text Generation
Generates the same topic or source text at multiple reading levels simultaneously, letting a teacher assign appropriately leveled versions to different students without manually rewriting content.
Vocabulary Tier Breakdown
Identifies and explains key vocabulary within a text at tiered difficulty, supporting explicit vocabulary instruction alongside the reading material itself.
Comprehension Question Generation
Automatically creates comprehension questions matched to each generated reading level, keeping assessment consistent with the adjusted text difficulty.
Source Text and URL Adaptation
Accepts an existing article, PDF, or topic as a starting point, adapting real source material rather than generating entirely new, potentially less accurate content from scratch.
No-Login Free Access
Offers core differentiation functionality without requiring a paid account, making it genuinely usable at no cost for occasional or exploratory use.
Google Classroom Integration
Lets teachers push generated, leveled materials directly into Google Classroom, streamlining distribution to students.
Pros
- Does one specific job, reading-level differentiation, better than any broader generalist AI teaching tool attempts to
- Free plan is genuinely useful with no hard limits on the core differentiation use case, not just a token trial
- Interface is fast to learn, with most teachers productive within a single lesson's worth of use
- Output quality is strong enough to use with minimal editing for the specific differentiation task it's built for
Cons
- Narrow scope means it won't replace a broader lesson planning platform or a dedicated grading tool
- School and district-level pricing is not fully public and requires direct contact for a quote
- Best suited specifically to text-based differentiation; it's not built for generating original lesson plans, quizzes unrelated to a specific text, or classroom management tasks
- As with any AI-generated content, leveled text still benefits from a teacher's review, particularly for subject-specific accuracy in STEM or technical topics
Pricing
Diffit offers a genuinely free plan covering its core differentiation use case, with a paid Pro tier priced around $14.99 per month for individual teachers who want expanded features. School and district-level pricing requires direct contact with Diffit for a custom quote. Because Diffit's free tier already covers the core use case well, many individual teachers find it usable indefinitely without needing to upgrade, with Pro reserved for those wanting additional capacity or features. Confirm current Pro tier features and school pricing on the official Diffit website before requesting a quote.
Best for
Diffit is best suited to teachers working in genuinely mixed-ability classrooms, including those with ESL students, IEP accommodations, or a wide reading level spread, who need to differentiate the same core content quickly and repeatedly. It fits AI Education workflows centered specifically on reading-level differentiation rather than broader lesson planning or classroom management. Teachers whose primary need is general lesson planning, quiz generation unrelated to a specific text, or interactive classroom engagement should pair Diffit with, or choose instead, a broader platform like MagicSchool AI or an interactive tool like Curipod.
Use cases
- Generating three or four reading-level versions of the same article for a mixed-ability class
- Creating a vocabulary tier breakdown to support explicit instruction alongside a reading assignment
- Building comprehension questions matched to each student's assigned reading level
- Adapting an existing news article or PDF into classroom-ready, leveled versions
- Supporting individualized reading materials for students with IEP or ESL accommodations
Supported platforms
- Diffit is a web-based platform accessible through any modern browser, with integration into Google Classroom for streamlined distribution of generated materials to students.
Languages
- Diffit supports English along with multiple additional languages for generated content, useful for ESL classrooms and multilingual student populations.
Integrations
- Diffit's primary integration is with Google Classroom, letting teachers push differentiated, leveled materials directly to students without a separate manual distribution step.
Things to consider
- Diffit is not designed to replace a broader lesson planning or grading platform, so teachers should think of it specifically as a differentiation tool to pair with whatever broader planning system they already use. Because the free tier already covers the core use case well, it's worth testing thoroughly before assuming a paid upgrade is necessary. Schools considering district-wide adoption should request a direct quote early in the budgeting process, since pricing at that scale isn't published.
How the tool compares
Diffit's closest comparison is Khanmigo, though the two solve different problems: Khanmigo is a Socratic AI tutor working directly with students, while Diffit is a teacher-facing tool for adapting source material to different reading levels before a lesson happens. Against a broad platform like MagicSchool AI, Diffit is narrower but more deeply capable at its specific differentiation task, since MagicSchool's differentiation tools sit alongside 80-plus other tools rather than being the platform's singular focus. Teachers whose core challenge is reaching students at different reading levels within the same lesson tend to find Diffit's narrow focus genuinely valuable; teachers needing broader planning or assessment support should pair it with a more comprehensive platform.
AIToolister verdict
Quick Answers
- Is it free? Freemium — a genuinely usable free plan covers the core differentiation use case. - Is it worth it? Yes, specifically for teachers in mixed-ability classrooms needing fast text differentiation. - Who should use it? K-12 teachers, ESL instructors, and special education teachers with mixed-ability classrooms. - Best alternative: MagicSchool AI for teachers wanting differentiation as one feature within a broader platform.
Diffit earns its reputation by doing one thing, reading-level differentiation, better than any generalist AI teaching platform attempts to, and its genuinely usable free tier makes it accessible to any teacher facing this common classroom challenge. It's not trying to be a full lesson planning or grading solution, and buyers should evaluate it on that narrower, specific promise rather than expecting broader functionality. For the mixed-ability classroom problem it targets, it remains one of the strongest tools available in 2026.
Decision Summary
- Mixed-ability classroom needing fast text differentiation: Recommended - Need broader lesson planning or classroom management tools: Pair with a platform like MagicSchool AI - ESL or IEP students needing individualized reading materials: Strong fit given vocabulary tiering and leveled text generation - District considering school-wide rollout: Request a direct quote for current Enterprise pricing
Frequently asked questions
- Is Diffit free for teachers?
Yes, Diffit offers a genuinely free plan that covers its core reading-level differentiation use case without hard limits, with a paid Pro tier around $14.99 per month available for teachers wanting expanded features.
- What does Diffit actually do?
Diffit generates the same topic, article, or uploaded text at multiple reading levels, along with matched vocabulary breakdowns and comprehension questions, specifically solving the problem of differentiating one lesson's content for students reading at different levels.
- Does Diffit replace a lesson planning platform like MagicSchool AI?
No, Diffit is deliberately narrow and focused specifically on reading-level differentiation, not broader lesson planning, quiz generation unrelated to a text, or classroom management. Many teachers use it alongside a broader platform.
- Can Diffit adapt an existing article or PDF I already have?
Yes, Diffit accepts an existing article, PDF, or URL as a starting point and adapts that real source material into leveled versions, rather than only generating new content from a topic alone.
- How much does Diffit cost for a school or district?
School and district-level pricing is not published and requires direct contact with Diffit for a custom quote. The individual free and Pro tiers are the only publicly listed pricing.