AssemblyAI

Name: AssemblyAI
Rating: 4.77 (25 reviews)

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

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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.

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AssemblyAI Launches

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

Universal 2 Speech-to-text for conversational data

Launched on October 31st, 2024

Universal-1 Multilingual speech AI model trained on 12.5M hours of data

Launched on May 21st, 2024

View all AssemblyAI launches

4.8

Based on 25 reviews

Review AssemblyAI?

Reviews praise AssemblyAI’s accuracy, speed, multilingual support, and breadth of audio intelligence features like diarization, sentiment, and chapters. Makers of

Vercel

highlight a fantastic, reliable transcription API; makers of

Tella

say accurate transcripts improve subtitles and editing; makers of

Me.bot

note easy integration and strong results across media types. Developers commend clear docs and simple setup, with scalable real-time performance. A few critiques mention occasional word errors and billing friction, but consensus favors top-tier quality and developer experience at accessible pricing.

+23

Summarized with AI

Pros

accurate transcription (10)

transcription API (6)

easy integration (5)

excellent documentation (3)

sentiment analysis (3)

content moderation (2)

fast performance (2)

multilingual support (2)

Pros

Cons

Reviews

All Reviews

Most Informative

•8 reviews

AssemblyAI isn’t just a transcription engine—it’s a full-fledged audio intelligence platform. With top-tier accuracy, rich audio features, real-time capabilities, scalable APIs, and rapid innovation, it's an incredible asset for anyone working with voice/video data. If you're a developer, podcaster, researcher, or enterprise looking to build or analyze audio at scale, AssemblyAI is absolutely worth exploring.

What's great

accurate transcription (10)real-time transcription (1)rich audio features (1)scalable APIs (1)

Report

100 views8mo ago

used

AssemblyAI

to build NeuraVid

•3 reviews

When selecting a speech-to-text & audio intelligence provider for NeuraVid.io, we compared several options, including Deepgram, Rev AI, AWS Transcribe, and Whisper-based APIs. We ultimately chose AssemblyAI because of the following key advantages: superior transcription quality, multilingual & the best speaker diariaztion that we tested

What's great

accurate transcription (10)multilingual support (2)speaker diarization (1)

Report

100 views12mo ago

used

AssemblyAI

to build Inkr 2.0

•7 reviews

What sets AssemblyAI apart is its simplicity and seamless integration for transforming speech into meaningful text. Their API is easy to implement, providing highly accurate and fast transcription with industry-leading accuracy, while also offering features like sentiment analysis and content moderation out of the box.

What's great

fast performance (2)easy integration (5)accurate transcription (10)sentiment analysis (3)transcription API (6)content moderation (2)

Report

67 views10mo ago