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Language learning for exotic, rare, and constructed languages

Unlimited spoken language practice with AI teachers you can actually follow

Three-minute AI lessons on anything you are curious about

Master Italian conversations with an adaptive AI tutor and speech-first audio courses

AI homework help and visual courses that explain the why

Turn a prompt or document into a full online course

Learn languages from Netflix, YouTube, and real-world texts with dual subtitles and AI

Build English speaking confidence with AI feedback

Printable language workbooks generated around your own interests

Free practical deep learning courses, research and open-source libraries

Free open course for prompt engineering and AI security

AI co-author that turns company knowledge into ready-to-publish courses

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

AI-first LMS that helps teams ramp faster and prove impact

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

Learn languages through real news, videos and lyrics — not drills

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

Turn any material into visual study sets, flashcards and quizzes

Free AI language learning app with CEFR-based lessons

Learn a language from the videos you already watch

Learn a language while watching Netflix and YouTube, with AI subtitles, chat and pronunciation feedback

Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.

Immediate vocational English training to get more jobseekers into work

A free toolkit for learning Japanese numbers, grammar and natural phrasing