Speak
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.
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