Speak
AI-powered language-learning app that gives consumers and businesses spoken-fluency practice with an AI tutor, roleplay and real-time pronunciation feedback.
Speak sells a mobile app built around speaking out loud. It combines expert-designed lessons, AI conversation practice and real-time feedback on pronunciation and phrasing, mainly for English learners, and it is especially strong in South Korea. It earns money from consumer subscriptions and, since 2024, a Speak for Business plan for L&D and HR teams. Forbes reported about 500 firms, including KPMG and HD Hyundai, offering it to staff. Speak raised a $78M Series C led by Accel at a $1B valuation in late 2024, bringing total funding to about $162M, and was reported in 2025 to have passed $100M in annualized revenue. Backers include the OpenAI Startup Fund and Khosla Ventures.
AI language tutor that teaches by conversation, biggest in Korea and Japan. Reported at ~$100M of ARR in 2026; valued at $1B in its December 2024 Series C.
