# Voice AI & Realtime APIs

Realtime voice AI with OpenAI WebRTC and ElevenLabs. Voice-driven database queries, action agents, automation.

## Apps (2)

### Realtime Voice - ElevenLabs Cricket Analyzer
- App: https://rexc.tigzig.com
- Docs: https://tigzig.com/app-documentation/realtime-voice-elevenlabs.html
- AI Docs: https://tigzig.com/ai/apps/realtime-voice-elevenlabs.md
- ODI Cricket database analysis with voice interaction powered by ElevenLabs. AI chat assistant connected to PostgreSQL database with Cricsheet.org ball-by-ball data. Supports text and voice queries, Python charts, and Google Docs integration.

### ODI Cricket DB with OpenAI Realtime API WebRTC
- App: https://realtime.tigzig.com
- Docs: https://tigzig.com/app-documentation/realtime-voice-webrtc.html
- AI Docs: https://tigzig.com/ai/apps/realtime-voice-webrtc.md
- ODI Cricket DB with OpenAI Realtime API WebRTC

## Blog Posts (10)

- [Realtime voice AI - OpenAI WebRTC Implementation. Live app. Open source.](https://tigzig.com/post/realtime-voice-ai-openai-webrtc-implementation-live-app-open-source.html) — Tags: voice-ai
  Implementation of real-time voice AI analytics using OpenAI's Realtime API with WebRTC. REX-RT app connects to PostgreSQL (1.5M cricket records) for voice-driven database queries using GPT-4o-mini function calling. Costs approximately $0.05-0.07 per minute. Built with vanilla JavaScript, FastAPI for DB connectivity, and Flowise for LLM agents. Compares with ElevenLabs widget approach (~$0.20/min). Open source with deployment guides.
  AI-readable: https://tigzig.com/ai/posts/realtime-voice-ai-openai-webrtc-implementation-live-app-open-source.md
- [Real-time voice AI - from cricket to credit cards. Live app. Open source.](https://tigzig.com/post/real-time-voice-ai-from-cricket-to-credit-cards-live-app-open-source.html) — Tags: voice-ai
  Real-time voice AI assistant (REX-C) built with ElevenLabs Conversational AI widget, connected to PostgreSQL with 1.5M ODI cricket records for voice-to-SQL queries. Costs ~$0.20/min. Compares real-time voice options: OpenAI Realtime API (~10c/min), ElevenLabs (~20c/min), Hume AI (~7c/min), VAPI (~5c/min), and others. Lightweight ~80kb vanilla JavaScript implementation with FastAPI backend and Flowise LLM agent.
  AI-readable: https://tigzig.com/ai/posts/real-time-voice-ai-from-cricket-to-credit-cards-live-app-open-source.md
- [Building AI apps with natural language and voice: top 9 tips](https://tigzig.com/post/building-ai-apps-with-natural-language-and-voice-top-9-tips.html) — Tags: voice-ai, ai-coders
  Brief overview post pointing to REX AI Decision Intelligence platform at tigzig.com, an open-source collection of micro-apps and tools for AI-driven analytics and data science. Covers building AI apps with natural language and voice interfaces.
  AI-readable: https://tigzig.com/ai/posts/building-ai-apps-with-natural-language-and-voice-top-9-tips.md
- [How to update Excel, Google Sheet and backend Databases with Natural Language commands with Voice Agents](https://tigzig.com/post/how-to-build-ai-action-agents-beyond-chat-with-voice-agents.html) — Tags: voice-ai, database-ai
  Part 1 of a 5-part series on building voice-enabled LLM action agents (VTEXER). Demonstrates updating Excel, Google Sheets, and remote databases, generating PDF reports and slides, querying MySQL, and emailing results via natural language voice commands. Uses Flowise AI ReAct agents with function calling, Make.com automation workflows, Google Apps Script, and FastAPI backend. Built with React.js frontend, all code generated by AI tools.
  AI-readable: https://tigzig.com/ai/posts/how-to-build-ai-action-agents-beyond-chat-with-voice-agents.md
- [How to update Excel, Google Sheet and backend Databases with Natural Language commands with Voice Agents](https://tigzig.com/post/how-to-update-excel-google-sheets-and-databases-with-ai-voice-agents.html) — Tags: voice-ai, database-ai
  Part 2 implementation guide for AI voice action agents. Hands-on 45-minute video showing how to set up Flowise ReAct agents and Make.com webhooks to update Excel, Google Sheets, and databases via voice commands. Covers two go-live scenarios: Flowise native UI and full custom voice bot UI. Deployable source code on GitHub produces a functional voice bot. Integrates with 1000+ platforms via Make.com connectors.
  AI-readable: https://tigzig.com/ai/posts/how-to-update-excel-google-sheets-and-databases-with-ai-voice-agents.md
- [How to set up, deploy, and connect Google Scripts to Make.com for task automation.](https://tigzig.com/post/automate-tasks-with-ai-voice-agents-and-google-script.html) — Tags: voice-ai
  Part 3: setting up Google Apps Script for task automation connected to Make.com and Flowise AI voice agents. Demonstrates automated report generation (Excel-to-PDF), slide creation, and email delivery triggered by voice commands. Uses React.js custom frontend, Flowise for LLM agents, Google Script for automation, and FastAPI for AWS MySQL database connectivity. Includes hands-on implementation guide, source code, and JSON schemas on GitHub.
  AI-readable: https://tigzig.com/ai/posts/automate-tasks-with-ai-voice-agents-and-google-script.md
- [How to use AI Assisted Coding Tools like Claude Dev and Cursor AI to develop LLM Apps with natural language commands. And deploy to open internet.](https://tigzig.com/post/build-ai-voice-action-agent-app-in-react-js-in-natural-language.html) — Tags: voice-ai, ai-coders
  Part 4: using AI-assisted coding tools (Claude Dev VS Code extension and Cursor AI) to build LLM voice agent apps with natural language instructions. Demonstrates building a React.js voice bot with voice-to-text, chat completion, and text-to-speech components, then deploying to Vercel. Covers GitHub-to-Vercel deployment pipeline, multilingual support, and API endpoint routing to Flowise LLM agents.
  AI-readable: https://tigzig.com/ai/posts/build-ai-voice-action-agent-app-in-react-js-in-natural-language.md
- [How to build Voice-based AI Action Agents App to Execute Tasks, Automate Reports, and Analyze Data …and more.](https://tigzig.com/post/how-to-build-voice-based-ai-action-agents-app-to-execute-tasks-automate-reports-and-analyze-data.html) — Tags: voice-ai
  Comprehensive 5-part series overview for building VTEXER, a voice-enabled LLM action agent app. Covers updating Excel/Google Sheets/databases, generating PDF reports and slides, querying MySQL, web search, and custom agent menu selection via voice. Architecture: React.js frontend, Flowise ReAct agents (LangGraph), Make.com workflows, Google Apps Script, FastAPI backend. All code AI-generated using Claude Dev and Cursor AI. Full source code, schemas, and 2+ hours of video guides.
  AI-readable: https://tigzig.com/ai/posts/how-to-build-voice-based-ai-action-agents-app-to-execute-tasks-automate-reports-and-analyze-data.md
- [Meet REX-1: Your Realtime AI Analytics Agent System (Web Version)](https://tigzig.com/post/rex1-your-realtime-ai-analytics-agent-system-web-version.html) — Tags: database-ai, text-to-sql
  REX-1 real-time AI analytics agent built on OpenAI's Realtime API (~$1/min). Connects to data warehouses (AWS, Azure, MySQL) for voice-driven text-to-SQL, statistical analysis, Python charts, web scraping, stock technical charts, and reporting automation. Backend uses Flowise AI agents, Make.com workflows, and custom FastAPI servers. Includes 90-minute build guide video, non-realtime free tier with voice input, and detailed architecture walkthrough.
  AI-readable: https://tigzig.com/ai/posts/rex1-your-realtime-ai-analytics-agent-system-web-version.md
- [VOICE MODE - Querying & Analyzing Data with Custom GPT AWS - Azure Data Warehouse](https://tigzig.com/post/voice-mode-query-analyze-database-aws-azure-custom-gpt.html) — Tags: voice-ai, custom-gpt, database-ai
  Demonstration of ChatGPT voice mode for querying and analyzing an Azure MySQL data warehouse via Custom GPT. Shows inserting conditional fields, creating distributions from calculated fields, generating charts, creating summary tables, merging datasets, and table operations via voice commands. Applications include senior leadership voice dashboards, ad-hoc query support, and rapid data transformations. Part 2 of the AWS/Azure data warehouse series.
  AI-readable: https://tigzig.com/ai/posts/voice-mode-query-analyze-database-aws-azure-custom-gpt.md

## Related Topics

- [Database AI & Text-to-SQL](https://tigzig.com/ai/tags/database-ai.md)
- [Python in Excel (xlwings Lite)](https://tigzig.com/ai/tags/python-in-excel.md)
- [Claude in Excel](https://tigzig.com/ai/tags/claude-in-excel.md)
- [DuckDB - Analytics & Dashboards](https://tigzig.com/ai/tags/duckdb.md)
- [MCP Servers & Agents](https://tigzig.com/ai/tags/mcp-servers.md)