Speak, a leader in AI-powered language learning, has raised $78 million in Series C funding at a $1 billion valuation.The company prioritizes spoken fluency through innovative AI technology and focuses on speaking out loud as the most effective way to achieve fluency.Speak has helped over 10 million learners in 40+ countries achieve measurable progress through its AI-powered virtual tutor and personalized lessons.With plans to expand into new markets and introduce more languages, Speak aims to build the world's most advanced AI language tutor.