AI BriefingBuilding a Speech-to-Text App with AssemblyAI on Replit
Key point
It covers how to build a file upload-based Speech-to-Text app using the AssemblyAI API, Next.js, and Replit.
Details
STT (Speech-to-Text) is a core technology used across various fields, from AI assistants to video subtitle generation. AssemblyAI supports an API that provides advanced AI models capable of converting audio and video files, as well as real-time streams, into text.
Beyond simple text conversion, AssemblyAI offers the following powerful features:
- Speaker detection
- Intelligent punctuation and content summarization
- Custom/specialized vocabulary support
- Content moderation
- Topic and entity (company names, locations, etc.) detection
In this guide, we build an app that converts uploaded files into text using React, Next.js, and Replit. It walks through, step by step, configuring the frontend with Tailwind CSS and handling file uploads and API integration using the Axios and multiparty libraries.
For security, the API key is stored and managed in Replit's Secrets (environment variables) menu, and it is implemented to communicate securely with AssemblyAI via Next.js API routes.
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