1. [Home](https://www.g2.com/) 2. ... 3. [Voice Recognition Software](https://www.g2.com/categories/voice-recognition) 4. [AssemblyAI - Speech to Text API Discussions](https://www.g2.com/products/assemblyai-speech-to-text-api/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_3a569b481581e68982deeaa6a8d5ec80/assemblyai-speech-to-text-api.png "Product Avatar Image") ![Reward for good AssemblyAI - Speech to Text API reviews](https://images.g2crowd.com/uploads/report_medal_translation/image/26897/medal.svg "Reward for good AssemblyAI - Speech to Text API reviews") ](/products/assemblyai-speech-to-text-api/reviews) [ AssemblyAI - Speech to Text API ](/products/assemblyai-speech-to-text-api/reviews) (125)4.6/5 Founded in 2017 and headquartered in San Francisco, AssemblyAI is a Voice AI platform serving over 200,000 developers worldwide. AssemblyAI specializes in providing speech recognition and understanding capabilities through API-based services, with a focus on conversation intelligence and voice agent applications. Companies ranging from early-stage startups to Fortune 500 enterprises across technology, healthcare, legal, and telecommunications industries rely on this comprehensive speech processing API. Developers leverage AssemblyAI's API to build speech-to-text transcription, speaker diarization, sentiment analysis, entity recognition, and summarization into their product lines. Core features include real-time and batch audio processing, automatic language detection across 40+ languages, PII redaction for compliance requirements, and custom vocabulary support. By addressing the challenge of extracting actionable insights from voice data at scale, AssemblyAI enables organizations to automate conversation analysis, improve quality assurance processes, enhance customer experience monitoring, and build voice-enabled applications. Common implementations include call center analytics, meeting transcription services, voice assistant development, and compliance recording systems. AssemblyAI's accuracy in multi-speaker environments and specialized conversation intelligence features accurately identifies and separates different speakers in conversations while maintaining high transcription accuracy, even with background noise, accents, and technical terminology. Unlike general-purpose speech recognition services, the API provides purpose-built features for conversation analysis and enables rapid integration into your ecosystems, typically allowing developers to implement production-ready voice capabilities within days rather than months. Operating on a usage-based pricing model, AssemblyAI offers flexible billing options with zero commitments required for customers of all sizes. Developers can start for free and pay as they go, with no upfront commitments—only paying for what they use. Our API provides production-ready access with high default concurrency and automatic scaling, including unlimited concurrency options and customizable rate limits for any workload. Get started with AssemblyAI today—sign up for free and receive $50 in credits to explore our Voice AI capabilities. Show More * * * ### 76.0 Nps Score Already have AssemblyAI - Speech to Text API? ### All AssemblyAI - Speech to Text API Discussions Search Most CommentedMost HelpfulCommon QuestionsNewest All DiscussionsDiscussions with CommentsCommon QuestionsDiscussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Common Questions Newest Filter by All Discussions Discussions with Comments Common Questions Discussions without Comments ![Pinned by G2 as a common question](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Pinned by G2 as a common question") G2 Pinned by G2 as a common question • about 3 years ago More Options - [ # What is AssemblyAI - Speech to Text API used for? ](/discussions/what-is-assemblyai-speech-to-text-api-used-for) What is AssemblyAI - Speech to Text API used for? 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