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

Chat with any PDF, video, or website and get cited answers in seconds

PTE practice tests with instant AI scoring and realistic mock exams

Interactive courses for data science, AI and analytics skills

Turn any document, video or topic into a finished quiz in seconds

Design a site visually and publish it live, with no code

Expert-reviewed digital SAT prep with adaptive tests and a curated question bank

AI language and skills assessments for hiring and education

AI-powered practice and scoring for the Duolingo English Test

AI tools to fund, launch and grow your small business

A free place to study the Bible with an AI assistant

VRAM, throughput and GPU cost calculators plus courses for open-weight LLM deployment

AI-coached CASPer practice questions and full mock tests

AI plan review and permitting software for cities and design teams

An AI workbench that plans and executes real tasks, not just chats.

AI-adaptive LSAT drilling for Logical Reasoning and Reading Comprehension

A conversational AI fluency assessment with a free LinkedIn certificate

Real-time AI interview assistant for live interviews and coding screens

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

Turn workforce data into board-level decisions on execution risk and investment

An AI-agentic learning platform that unifies LMS, LCMS, LXP and LRS with no-code authoring and automation

AI stock analyst combining fundamental quality, market fit and valuation timing in one score

Pass your Dutch driving theory exam the first time with online lessons, quizzes, and practice exams

AI IELTS Writing Task 2 evaluation and improvement