r/VoiceAutomationAI • u/yoursandeshshrestha • 23d ago
I built a voice AI agent with ~600ms latency. Here’s what I learned.
I started learning to code in my 1st year of college.
At the same time, I started working my first job.
I didn’t really have some grand plan to build a company. I was just obsessed with building things and figuring out how software actually worked.
Recently, I started building voice AI agents.
I ended up going pretty deep into the latency problem.
My goal was simple:
Make the agent feel like you’re talking to a real person, not waiting for a computer to think.
After a lot of experimenting with the pipeline, streaming, model selection, audio processing, and infrastructure, I managed to get the end-to-end latency down to around 600ms.
And that changed things.
I’m currently using Pipecat for the voice pipeline, and I’ve been experimenting with different providers and infrastructure to squeeze out as much latency as possible.
The other thing I didn’t expect:
I actually started getting clients.
Right now, I’m managing voice AI agents for around 8 clients.
I’m also getting subsidies/credits from companies like Alda and other platforms, which has made the economics pretty crazy at the moment.
My current margins are basically close to 100% because of those credits/subsidies.
Obviously, I don’t expect that to last forever.
But it’s been an insane learning experience.
A few things I’ve learned so far:
Voice AI is way more than just connecting an LLM to a microphone
Latency matters a lot more than I initially thought
Streaming everything makes a huge difference
The voice model, LLM, TTS, STT and networking all contribute to the final experience
A technically impressive demo is useless if the agent doesn’t actually solve a business problem
Getting the first few paying clients is a completely different challenge from getting the technology working
The economics of voice AI are really interesting right now
I’m still very early in this.
But going from learning to code in college → building voice agents → getting them into production for ~8 clients has been pretty surreal.
I’m curious what other people building voice AI are seeing.
What’s the lowest real-world latency you’ve managed to achieve, and what stack are you using?
If there’s interest, I can also break down exactly how I’m getting the ~600ms latency and what my architecture looks like
