
AssemblyAI provides speech AI APIs, offering high-accuracy speech-to-text, audio content analysis, and the ability to apply large language models to speech data for extracting insights.
Core features include speech-to-text, real-time streaming transcription, multi-speaker separation, sentiment analysis, topic detection, PII handling, and deep QA and summarization via the LeMUR framework.
It targets developers, enterprise engineering teams, and organizations that need to process audio/video and extract text and insights—such as media companies, call centers, and educational technology platforms.
Pricing is typically usage-based, for example billed by transcribed audio duration. Check AssemblyAI’s official pricing page for exact rates, as different features may have different charges.
It supports many languages (reported to be dozens) and common audio formats. For the exact list of supported languages and formats, refer to the official documentation.
The platform offers features like automatic PII pseudonymization/redaction. For details on data storage, transmission, and processing safeguards, consult AssemblyAI’s privacy policy and security documentation.
LeMUR lets you apply large language model capabilities to transcribed text to perform deeper contextual analysis, intelligent question-answering, and key information extraction.
AssemblyAI provides a comprehensive speech AI API suite. Beyond transcription, it integrates advanced features such as speaker separation and sentiment analysis, and offers the LeMUR analysis framework specifically designed for speech data.

AssemblyAI is a platform offering speech-to-text and understanding AI services. Through its API, it converts audio and video data into text and performs in-depth analysis. It primarily serves developers and enterprises, helping them build voice AI products, analyze customer conversations, and extract business insights.

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