Differentiation is the thing every teacher knows they should do more of and never has time for. Diffit is the first AI tool that actually makes it fast.

What Diffit Does

You give it any text — a news article, a textbook passage, a Wikipedia page, a YouTube video URL — and it creates adapted versions at different reading levels. Each version includes:

• The adapted text at your chosen level
• Vocabulary words with definitions
• Comprehension questions
• A summary

You can generate versions for multiple levels from the same source, so all students engage with the same topic at their own reading level.

What Impressed Me

Speed

Paste a 500-word article, select “4th grade reading level,” and you have an adapted version in under 10 seconds. Creating the same thing manually would take 20-30 minutes.

Quality of adaptations

The adapted texts don’t just use simpler words — they restructure sentences, add context clues, and maintain the key concepts. A 10th-grade science article adapted to 5th-grade level still teaches the same science. It just explains it differently.

Multiple formats

Diffit doesn’t just simplify text. It can:

• Create versions at 3-5 different reading levels from one source
• Generate bilingual versions (English + Spanish, French, etc.)
• Turn text into multiple-choice questions
• Create fill-in-the-blank vocabulary exercises
• Summarize long texts into key points

Standards alignment

You can tag activities with specific standards (CCSS, NGSS, state standards). The generated questions align to the standard you selected.

What Frustrated Me

Limited customization

You can’t easily say “keep this specific vocabulary word but simplify everything else.” The adaptation is all-or-nothing for each reading level. Sometimes it simplifies a term you actually wanted students to learn.

Workaround: Generate the adapted version, then manually add back the key vocabulary terms you want to keep.

No handout formatting

The output is clean but basic. If you want a polished worksheet with your school’s header, specific formatting, or images, you’ll need to copy-paste into Google Docs or Canva and format it yourself.

Comprehension questions are hit-or-miss

The auto-generated questions are decent for recall but weak on higher-order thinking. You’ll want to replace 1-2 questions with your own analysis or evaluation questions.

Who It’s For

Perfect for:

• ELA teachers with mixed-ability classrooms
• Content-area teachers (science, social studies) who need to make texts accessible
• ESL/ELL teachers who need bilingual materials
• Special education teachers creating modified materials

Not ideal for:

• Math teachers (text-based tool, not equation-based)
• Teachers who need highly formatted worksheets
• Anyone who needs to adapt non-text content (videos, images)

Diffit vs Doing It Manually

Task	Manual	Diffit
Adapt article to 3 reading levels	45-60 min	2 min
Generate vocabulary list	15 min	30 sec
Create comprehension questions	20 min	30 sec
Bilingual version	30+ min (if you speak the language)	1 min

Diffit vs ChatGPT for Differentiation

ChatGPT can also simplify text, but:

• You need to write a detailed prompt every time
• It doesn’t automatically generate vocabulary lists and questions
• It doesn’t have reading level calibration (Lexile scores)
• It doesn’t save your materials in a library

Diffit is purpose-built for this one job and does it better than a general-purpose AI.

The Verdict

Diffit is the rare AI tool that does one thing and does it exceptionally well. It won’t replace your professional judgment about what your students need, but it eliminates the hours of manual work that prevent most teachers from differentiating as much as they’d like.

Price: Free for educators. Time saved: 2-5 hours per week if you regularly adapt materials. Rating: 9/10 — The best free AI tool for teachers, period.