Building the Future
of Voice AI
We are a collective of developers, engineers, and dreamers dedicated to mastering the art of conversational AI.
Our Mission
CallStack.tech was founded with a simple yet ambitious mission: to provide high-quality, production-ready tutorials for developers building AI voice agents. The voice AI landscape is moving fast, with tools like VAPI, ElevenLabs, Retell, and Bland.ai changing how we interact with technology. We're here to help you navigate this stack with confidence.
No Fluff
Every article is designed to be actionable. Real code snippets, architectural patterns, and zero wasted time.
Tested & Verified
We don't just write about code; we ship it. Every tutorial is backed by a working implementation.
What We Cover
- Voice AI Platforms (VAPI, Retell, Bland.ai)
- LLM Integration (GPT-4, Claude, Llama)
- Real-world Implementation
- Latency Optimization
- CRM Integrations
- Telephony & Webhooks
Get in Touch
Have a topic you want us to cover? Found a bug? Or just want to talk shop about voice agents?
info@callstack.tech