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AI math solver that explains every step and animates the solution

Practise PTE Academic and PTE Core free, with AI scoring for speaking and writing

PTE practice tests with instant AI scoring and realistic mock exams

AI browser extension that reads quiz questions and answers them with explanations

Study smarter for IELTS, TOEIC and HSK with AI speaking and writing rooms

All-in-one AI study tool for homework help, exam prep, notes, and flashcards

GenAI-native end-to-end QA agent that plans, writes and heals tests in plain language

Ship with confidence: one system of record for manual, automated, and CI tests

Screenshot any question, get instant AI answers

End-to-end certification platform built by psychometricians

Unlimited AI-generated Cambridge English practice with instant feedback

Snap a homework question and get step-by-step AI answers

Ace the Duolingo English Test with AI scoring and 18,000+ practice questions

High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.

Solve reCAPTCHA, Cloudflare and more in under 0.7 seconds

Write end-to-end test automation in plain English, no code required

AI-coached CASPer practice questions and full mock tests

Open-source, human-readable UI testing for mobile and web

Snap or type any math problem and get step-by-step solutions

Job-simulation skill assessments for the AI hiring era

AI-powered diagnostic practice tests for SAT®, ACT®, PSAT/NMSQT® and AP® — scored in about 40 minutes

Your personal AI tutor for every subject, from notes to exam day.

Enterprise online exam platform with professional psychometrics

Photograph your exam and get explained answers in seconds