
Interactive courses for data science, AI and analytics skills
Compare AI products across 459 workflows using traffic estimates, features, and alternatives.

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Interactive courses for data science, AI and analytics skills
Practise PTE Academic and PTE Core free, with AI scoring for speaking and writing
Practise PTE Academic and PTE Core free, with AI scoring for speaking and writing

Agent Skills that give your coding agent real design taste
Agent Skills that give your coding agent real design taste
Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms
Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms
AI English speaking coach with instant pronunciation feedback
Free, community-curated AI prompt library for ChatGPT, Claude and Gemini
Free, community-curated AI prompt library for ChatGPT, Claude and Gemini

PTE practice tests with instant AI scoring and realistic mock exams
PTE practice tests with instant AI scoring and realistic mock exams

Unlimited AI-generated Cambridge English practice with instant feedback
Unlimited AI-generated Cambridge English practice with instant feedback
Ace the Duolingo English Test with AI scoring and 18,000+ practice questions
Ace the Duolingo English Test with AI scoring and 18,000+ practice questions
AI-coached CASPer practice questions and full mock tests
AI-coached CASPer practice questions and full mock tests
Physics-based cycling and triathlon race pacing plans
Physics-based cycling and triathlon race pacing plans

Escape tutorial hell by building real, portfolio-ready projects
Escape tutorial hell by building real, portfolio-ready projects

AI-graded TOEFL practice tests with instant scores and feedback
AI-graded TOEFL practice tests with instant scores and feedback
Open-source gaze tracking with just a webcam
AI-powered diagnostic practice tests for SAT®, ACT®, PSAT/NMSQT® and AP® — scored in about 40 minutes
AI-powered diagnostic practice tests for SAT®, ACT®, PSAT/NMSQT® and AP® — scored in about 40 minutes

AI-powered practice and scoring for the Duolingo English Test
AI-powered practice and scoring for the Duolingo English Test

A free place to study the Bible with an AI assistant
A free place to study the Bible with an AI assistant

Autonomous AI QA agents that verify your web and mobile app on every pull request
Autonomous AI QA agents that verify your web and mobile app on every pull request

Master AI prompting with guided pathways, 3000+ prompts and multi-model comparison
Master AI prompting with guided pathways, 3000+ prompts and multi-model comparison

Pass your Dutch driving theory exam the first time with online lessons, quizzes, and practice exams
Pass your Dutch driving theory exam the first time with online lessons, quizzes, and practice exams
On-device pose estimation for fitness, rehab and workout apps
Hands-on, visual tutorials for learning neural networks and deep learning
Hands-on, visual tutorials for learning neural networks and deep learning

Private video library with searchable, AI-indexed video intelligence
Learn to code with AI-guided Python practice