Speak vs Diffit
Speak: Practise speaking a new language with an AI tutor. Diffit: Creates levelled readings, vocabulary and questions on any topic for differentiated teaching. Here is how they compare on features, pricing, platforms, pros and cons.
Quick verdict
Speak
Best for: Learners who want to speak confidently.
Stands out for: Strong focus on speaking; Instant AI feedback.
Diffit
Best for: Teachers who support students with a wide range of reading levels.
Stands out for: Saves lots of prep time; Simple workflow.
Side-by-side comparison
| Visit speak.com (opens in a new tab) | Visit web.diffit.me (opens in a new tab) | |
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| What it is | Practise speaking a new language with an AI tutor. | Creates levelled readings, vocabulary and questions on any topic for differentiated teaching. |
| Pricing | Paid | Free + Paid |
| Free to use | No | Yes |
| Category | AI for Learning | AI for Learning |
| Editor rank | #11 in category | #21 in category |
| Made by | Speak | Diffit |
| Best for | Learners who want to speak confidently. | Teachers who support students with a wide range of reading levels. |
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Speak vs Diffit: questions
Is Speak better than Diffit?
Neither wins for everyone. Our editors rank Speak slightly higher overall in AI for Learning, but Diffit can be the better fit: Teachers who support students with a wide range of reading levels.
Which is free, Speak or Diffit?
Diffit can be used for free (free + paid), while Speak is paid.
Can I use Speak and Diffit together?
Yes. Many people keep both and pick per task, for example practise speaking out loud every day with Speak, and rewrite an article for a grade 4 reader with Diffit.