Comparison · AI tutors and study assistants

Khanmigo vs ReLU.chat: which is better in 2026?

Khanmigo ranks higher in our list of AI tutors and study assistants (#1 against #3, score 90.5 against 82.5).

How we rank Share

  • 90.5
    Editorial score
    82.5
  • 3
    Platforms
    1
  • Yes
    Free to use
    Yes
  • No
    Open source
    Yes

Which should you choose?

Choose Khanmigo if you want

Guided tutoring for school subjects.

Built for learners, with a tutor tied to Khan Academy's lessons and free use for teachers. Learners and parents pay $4 a month, and it covers school subjects rather than any topic.

Choose ReLU.chat if you want

Free on-device answers in six subject areas.

Free study assistants that answer from curated entries on the device, with no account needed. They cannot write new text and cover six subject areas, but answers show source links where they are available.

The main differences

  • Only Khanmigo runs on iOS.
  • Only Khanmigo runs on Android.
  • ReLU.chat is open source; Khanmigo is not.

Side by side

KhanmigoReLU.chat*
Score90.582.5
Rank in list#1 of 10#3 of 10
PriceFree plan, paid upgradesFree for teachers; $4 a month for learners and parentsFree and open sourceFree to use with no account; source code is public on GitHub
Free to useYesYes
Open sourceNoYes
PlatformsWebiOSAndroidWeb, iOS, AndroidWebWeb
Made byKhan AcademyYunus Emre Vurgun
Tutoring styleTutor tied to Khan Academy lessonsAnswers from curated topic entries
Subjects coveredSchool subjectsSix subject areas, curated
Main inputTyped chatTyped questions
Best forGuided tutoring for school subjectsFree on-device answers in six subject areas
Strengths
  • Free for teachers
  • Tutor tied to Khan Academy's lessons
  • Fixed monthly price for learners
  • Six subject assistants, each with its own curated knowledge base
  • Questions are processed on the device, with no account
  • Answers include source links where available
Limits
  • Costs $4 a month for learners and parents
  • Focused on school subjects rather than general chat
  • Answers come from curated entries; no new text is generated
  • Topics are limited to six subject areas, 219 in total
  • Enhanced matching downloads a model of about 22 MB
LinksVisit site Visit site

Questions about Khanmigo vs ReLU.chat

Is Khanmigo better than ReLU.chat?
Khanmigo ranks higher in our list of AI tutors and study assistants (#1 against #3, score 90.5 against 82.5). Khanmigo is best for: guided tutoring for school subjects. ReLU.chat* is best for: free on-device answers in six subject areas.
Which is cheaper, Khanmigo or ReLU.chat?
Khanmigo: Free for teachers; $4 a month for learners and parents. ReLU.chat*: Free to use with no account; source code is public on GitHub.
Do Khanmigo and ReLU.chat run on the same platforms?
Khanmigo supports Web, iOS, Android. ReLU.chat* supports Web.

Made by, or connected to, the publisher of this site or people the publisher works with. Listed on the same criteria as everything else, with the lift described in How we rank and Disclosure.