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Brilliant vs Speak

Side-by-side comparison of Brilliant and Speak: pricing, features, API access, and community ratings.

AI comparison summary

TL;DR: Brilliant focuses on STEM subjects (math, coding, science) with visual, interactive problem-solving and gamification to build conceptual understanding, while Speak specializes exclusively in language learning with emphasis on real-time spoken conversation practice and pronunciation feedback. Choose Brilliant if you want to strengthen technical/analytical skills across multiple STEM domains, or Speak if your goal is conversational fluency in a new language. Both use AI tutoring that adapts to your progress, but serve completely different learning objectives.

Brilliant
Brilliant

Your personal AI tutor for math, coding, and science — built by experts from MIT and Harvard.

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Speak
Speak

The language learning app that gets you speaking

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Category
Education & learning
Education & learning
Pricing
Freemium
Freemium
Starting price
Free tier
Audience
All audiences
All audiences
API available
Open source
Self-hostable
Model provider
OpenAI
Founded
2012
Headquarters
San Francisco, USA
Key strengths
  • ·AI-powered personal tutor (Koji) that adapts to each learner's pace and gaps
  • ·Visual, interactive problem-solving approach that builds genuine intuition
  • ·Curriculum crafted by experts from MIT, Harvard, Stanford, Cornell, and Caltech
  • ·Broad STEM coverage: math, coding, science, and data analysis
  • ·AI-powered spoken conversation practice
  • ·Real-time pronunciation and phrasing feedback
  • ·Expert-built curriculum (Speak Method: Learn, Practice, Apply)
  • ·Personalized lessons adapted to learner history and mistakes
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