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6d ago · 14 min read · How to Handle 429 Rate Limits on Retell /v1/call for High-Volume Sales Dialers TL;DR Most high-volume sales dialers hit 429 throttling within hours of launch. Retell enforces strict concurrency limits—exceed them and your entire queue stalls. This gu...
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Apr 14 · 15 min read · How to Integrate Voice AI with Twilio: My Experience with Voice APIs TL;DR Most voice AI integrations fail when real-time transcription lags or barge-in interrupts cause audio overlap. This guide shows how to wire Twilio Media Streams to VAPI's WebSo...
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Apr 7 · 13 min read · How Retell AI Developers Integrate with Voice AI Tools: A Practical Guide TL;DR Most voice agent integrations fail because developers treat Retell, VAPI, and Twilio as interchangeable. They're not. Retell handles LLM orchestration and function callin...
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Apr 5 · 15 min read · How to Authenticate and POST to /v1/call Endpoint in Retell AI for Outbound Twilio Calls TL;DR Most outbound call integrations fail at authentication or payload validation. Here's what breaks: missing Bearer tokens, malformed E.164 phone numbers, and...
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Feb 23 · 15 min read · Building Multilingual Agents with Retell AI SDKs for Accent Adaptation: My Journey TL;DR Most multilingual agents fail when they hit accent variance—STT confidence drops 15-40% on non-native speakers, and language detection misfires mid-conversation....
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