I'm currently handling about 6k calls per day between a few different enterprises. We're likely going to implement and build this all out in LiveKit but I also need a better eval + simulation solution and I don't really want to build it out as well. I have seen Coval but I don't know the cost yet -- what else it out there that you guys use that can give me actionable feedback of missed tool calls, hallucinations, etc.

I’ve been building voice agents primarily with Retell and VAPI so far. I’ve explored platforms like Bland and Bolna as well, but I’ve mostly stuck with Retell since it’s been solid and reliable. Recently, I wanted to branch out into custom-built voice agents using frameworks like Pipecat, Cartesia, and others. I’m not really a coder, but I started experimenting with the Cartesia Line SDK through Antigravity. I managed to put together a decent agent but running into a lot of errors as I'm trying to match the responsiveness I get with Retell. No luck yet. I came across this community through a friend and thought I’d ask: has anyone here tried building with the Cartesia Line SDK? I’d love to hear your experiences.

Hey Guys! I'm fairly experienced with VAPI, but 100% new to open source voice AI. I'm currently looking to get deeper into that, and wondering what the state of the art/commonly used providers/models for STT, TTS, LLM, turntaking?, ... are, that are open source/hosted/usable in the EU. I had an advisory call today with a start-up that wants to integrate voice AI, and since they're in GER they need to be compliant and I want to recommend them a few good and solid options for their infra. Thank you already for letting me know your thoughts! Happy to learn! Cheers!

Hi all, I am Eric, COO at Cloudonix a Multi-Award Winning AI Voice Agent Orchestration Platform - Humans and AI Speak as One. Cloudonix is redefining how agentic AI voice agents connect to the real world. Our API-first, telecom-grade platform makes it faster and easier to deploy, scale, and operate voice agents—without complex infrastructure or specialized telecom engineering.

Is there any fully free, open-source method to make outbound AI voice calls? If anyone has an idea or experience with this, please share.