What is AssemblyAI?
AssemblyAI is a powerful Voice AI platform that turns spoken language into accurate text and meaningful insights—fast. Whether you're building voice agents, analyzing customer calls, or creating real-time transcription tools, AssemblyAI gives developers the models, APIs, and infrastructure to embed speech intelligence into any product.
Its latest breakthrough, Universal-3.5 Pro Realtime, is the first streaming speech-to-text model that uses the agent’s question as context to boost accuracy during live conversations. Trusted by companies like Zoom and Siro, AssemblyAI delivers industry-leading performance with no hidden limits, making it ideal for startups and enterprises alike.
What are the features of AssemblyAI?
- Realtime Speech-to-Text API: Stream highly accurate transcriptions with ultra-low latency using models like Universal-3.5 Pro Realtime.
- Pre-recorded Speech-to-Text API: Get polished transcripts in 99 languages with natural language prompting for custom outputs.
- Voice Agent API: Build production-ready voice agents with built-in turn-taking, interruption handling, and seamless LLM integration.
- Speech Understanding API: Go beyond words—extract speaker identification, sentiment, chapters, and summaries in one call.
- Guardrails: Automatically redact PII and moderate sensitive content before it reaches your logs or AI models.
- LLM Gateway: Route requests across top LLMs (GPT, Claude, Gemini) from a single endpoint with automatic fallbacks.
- Self-Hosted & Cloud Deployments: Choose flexible infrastructure options to meet security, compliance, or scale needs.
What are the use cases of AssemblyAI?
- Power AI scribes that auto-document doctor-patient conversations in healthcare settings.
- Build agent assist tools that give live suggestions to customer support reps during calls.
- Create voice agents for appointment booking, tech support, or sales demos.
- Analyze thousands of support calls with conversation intelligence to spot trends and improve training.
- Generate real-time captions for live events, webinars, or media broadcasts.
- Automate medical transcription with HIPAA-compliant, high-accuracy models.
- Repurpose podcast or meeting audio into blog posts, social clips, or summaries using AI.
How to use AssemblyAI?
- Sign up for a free AssemblyAI account to get your API key.
- Install the Python SDK:
pip install assemblyai. - Choose the right API—use the Realtime API for live audio streams or Pre-recorded API for uploaded files.
- For real-time transcription, set
speech_model="u3-rt-pro"to use the new Universal-3.5 Pro Realtime model. - Enable features like PII redaction or sentiment analysis by adding parameters to your API request.
- Test models instantly in the no-code Playground before coding your integration.
