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AssemblyAI

About us

AssemblyAI is a San Francisco-based AI company founded in 2017 by Dylan Fox. The company specializes in advanced Speech AI models, offering developer-friendly APIs for speech recognition, transcription, and understanding in over 80 languages. AssemblyAI focuses on providing high-accuracy, real-time AI models that help businesses and developers create voice-powered applications efficiently. The core offering includes a suite of Voice AI APIs that enable automatic speech-to-text transcription, speaker detection, topic detection, sentiment analysis, content moderation, and more. AssemblyAI's platform supports scalability for millions of daily calls and is designed to enhance the developer experience. The company has raised over $115 million in funding and has been recognized as one of Fast Company's 50 Most Innovative Companies of 2025. With a commitment to ongoing innovation, AssemblyAI continues to improve its models and features to meet the needs of its diverse customer base.

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Address:San Francisco, California, United States