Free · Chat & research · 4 of 5 tools · updated Oct 17, 2026
Free AI tools for learning & tutoring
Khanmigo is the strongest tool for learning & tutoring you can use without paying, at 16/100. What you get for nothing: Free for US teachers; learners $4/mo. 4 of the 5 tools tracked for this job have a free tier, an open-source licence, or are free outright. The highest-scoring tool overall is Speak (46), which does not qualify: Gets you talking from the first lesson with open-ended AI conversations rather than tap-the-word drills.
Same evidence score as the ranking — GitHub stars, Hacker News mentions, release activity, free access — recomputed nightly, never sold. See all 5 tools for learning & tutoring.
Top 3
evidence / 100
+ Deliberately refuses to just give the answer, nudging students through the problem with questions.
− Can be slow and occasionally makes arithmetic mistakes while tutoring math.
+ Video Call puts you in an unscripted spoken conversation that adapts to your level inside the app you already use.
− Pricey relative to Super Duolingo, and the AI features are only available for a subset of courses.
+ Phoneme-level feedback shows exactly which sounds in a word you are mispronouncing.
− English-only, and the scoring can be strict on perfectly intelligible accents.
All 4, side by side
| Tool | Score | Pricing | What you get free | Platforms |
|---|---|---|---|---|
| Khanmigo | 16 | Free tier | Free for US teachers; learners $4/mo | web, ios, android |
| Duolingo Max | 10 | Free tier | Max $29.99/mo | ios, android, web |
| ELSA Speak | 10 | Free tier | no limits published | ios, android, web |
 Quizlet | 10 | Free tier | Quizlet Plus $7.99/mo | web, ios, android |
A free tier counts, and so does an open-source licence you can self-host — both are in the table, so a tool that is only free for a trial is not here.
Head to head: Khanmigo vs Duolingo Max