Assembly AI
PaidAssembly AI provides enterprise-grade speech recognition and natural language processing APIs. Its models combine ASR (Automatic Speech Recognition), NLP (Natural Language Processing), and STT (Speech to Text) to deliver highly accurate transcriptions with advanced features like sentiment analysis, content moderation, topic detection, and entity extraction. It is designed for developers building production-scale audio processing applications.
Best for: Developers building production applications that need advanced audio intelligence
Why this tool isn't working
You may wish to try one of these alternatives.
How to use Assembly AI
Get an API key
Sign up at assemblyai.com and get your free API key to start making requests.
Upload your audio
Submit your audio file via the API or use their hosted upload solution.
Request transcription
Call the transcription endpoint with optional features like sentiment analysis and topic detection.
Process results
Receive the JSON response with transcript text, timestamps, and any requested NLP data.
Alternatives to Assembly AI
Whisper OpenAI
#23 in AI Transcription Tools
A flexible speech recognition model that excels in multilingualism and translation. Ideal for a wide range of audio applications
FineVoice Speech to Text
#11 in AI Transcription Tools
Easily convert your audio files into text in over 40 languages using this AI tool. Compatible with TEXT, JSON, VTT and SRT files
More AI Transcription Tools
Translate.Video
#4 in AI Transcription Tools
An AI that allows the translation of videos with subtitles, dubbing and transcriptions included
Free Subtitles Generator
#6 in AI Transcription Tools
Enjoy 100 FREE minutes daily for AI-powered animated captions in 100+ languagesâadd them to your videos in seconds!
Canary-1b-v2
#25 in AI Transcription Tools
An open-source AI model created by Nvidia for speech recognition and translation in 25 European languages (1 billion parameters)