Description
AssemblyAI offers a comprehensive platform for developers to build voice-enabled applications using advanced AI models. The platform provides industry-leading speech-to-text transcription and voice understanding capabilities, enabling businesses to extract valuable insights from audio data. Developers can integrate these powerful APIs into any product or stack, regardless of the technology used.
AssemblyAI's core offerings include Pre-recorded Speech-to-Text API for generating accurate transcripts from audio files in 99 languages, and Realtime Speech-to-Text API for streaming live audio with low latency. Beyond transcription, the Speech Understanding API extracts crucial information like speaker identification, sentiment analysis, chapter detection, and summarization from a single API call. The Voice Agent API facilitates the creation of production-ready voice agents with built-in turn detection and interruption handling.
For enhanced data security and compliance, AssemblyAI offers Guardrails to redact PII and moderate content inline. The LLM Gateway simplifies routing to various LLMs with fallback mechanisms, ensuring resilience. The platform is built on robust infrastructure, offering global redundancy and enterprise-grade uptime, processing millions of hours of audio daily. Pricing is designed to scale without hidden costs, offering flexibility for businesses of all sizes.
AssemblyAI is trusted by millions of developers and used by top companies like Zoom and Siro. Use cases span AI Scribes, AI Notetakers, Agent Assist, Call Analytics, Conversation Intelligence, and Medical Transcription. The platform aims to reduce the time developers spend configuring tools, allowing them to focus on shipping innovative voice AI solutions faster. A no-code playground is also available to test their models.
AssemblyAI's Core Features
Speech-to-Text API for pre-recorded audio
Real-time Speech-to-Text API for live audio streams
Speech Understanding API for extracting insights (speaker ID, sentiment, chapters, summaries)
Voice Agent API for building voice agents with turn detection and interruption handling
Guardrails for PII redaction and content moderation
LLM Gateway for routing and fallback
Universal-3.5 Pro speech-to-text model
Support for 99 languages in transcription
Scalable infrastructure with global redundancy
Flexible pricing without concurrency limits or throttles
No-code playground for testing models
How to use AssemblyAI?
Configure API access: Obtain API keys and set up necessary SDKs.
Integrate APIs: Embed speech-to-text or voice understanding functionalities into your application.
Process audio: Send pre-recorded files or stream real-time audio for transcription and analysis.
Extract insights: Utilize the Speech Understanding API to derive deeper meaning from audio data.
Build voice agents: Develop interactive voice agents using the dedicated Voice Agent API.
Deploy and scale: Leverage AssemblyAI's infrastructure for production-ready applications at any scale.
AssemblyAI's Use Cases
- AI Scribes
- AI Notetakers
- Agent Assist
- Call Analytics
- Conversation Intelligence
- Medical Transcription
- Voice Agents
- Content Summarization






