AssemblyAI
The best way to build Voice AI apps with one robust API
4.8•25 reviews•6.7K followers
The best way to build Voice AI apps with one robust API
4.8•25 reviews•6.7K followers
AssemblyAI builds advanced speech language models that power next-generation voice AI applications. Its industry-leading speech-to-text delivers highly accurate transcription along with speaker detection, summarization, PII redaction, and an LLM gateway.
With async and real-time streaming support, developers can easily integrate AssemblyAI into AI notetakers, voice agents, AI medical scribes, call analytics tools, and more.
AssemblyAI launches
Launch date
AssemblyAI: Universal-3 Pro Streaming The most accurate streaming speech model for voice agents.
Launched on March 4th, 2026
Universal-3 Pro The first of its kind promptable speech language model
Launched on February 4th, 2026
Universal-Streaming Ultra-fast, ultra-accurate streaming STT for voice agents.
Launched on June 3rd, 2025
AssemblyAI Auto Chapters Automatically summarize audio and video files with an API
Launched on November 29th, 2021
AssemblyAI - Speech-to-Text API APIs to automatically transcribe and understand audio
Launched on August 4th, 2017