The Real Cost of DIY: Building a Voice Agent on Twilio + OpenAI
In 2024, I decided to build a voice agent from scratch. The plan was simple: use Twilio for telephony, OpenAI Whisper for speech-to-text, GPT-4 for the brain, and ElevenLabs for voice synthesis. Stack it all myself. Save money. Prove that building beats buying. I was wrong. Not just about the cost,
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