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Launch HN: Retell AI (YC W24) – Conversational Speech API for Your LLM

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Re: Launch HN: Retell AI (YC W24) – Conversational Speech API for Your LLM

#161
post #160

I'm assuming you're targeting this mainly at enterprises and business use-cases such as callcenters, but are you planning to make this usable for personal use cases as well? For example, having a bot to bounce ideas off while coding. Pretty much "just" the TTS / STT layer to talk to my finetuned LLM in a natural manner while you handle interruptions and such. I think the main issue right now for personal use would be…

A rubber duck that talks back? Now AI has truly gone too far dammit!

Re: Launch HN: Retell AI (YC W24) – Conversational Speech API for Your LLM

#162

The demo is nice but it makes me wonder: why would a company have a fully automated voice line rather than a booking interface? As a customer I'm never happy to call a company to make a reservation. I'd be extra annoyed if an AI picked up and I had to go through the motions of a conversation instead of doing two clicks in a Web UI.

Yes, for booking appointments, a simple interface might do the trick. However, we've seen many excellent use cases of our API that prevent repetitive tasks and help companies save money, like AI logistics assistants, pre-surgery data collection, AI tutor and AI therapists. I believe the future will bring even more voice interface applications. Imagine not having to navigate complex UIs; you could easily book a flight…

As a user, I want to talk to LLMs to answer my random day to day questions. I tried the Retell demo and asked it questions that I had earlier asked Alexa and Google Assistant. The Retell experience was a million times better. I wish I could set it as my phone's (Android) default assistant. If you built that, I would pay good money for it!

However, I agree with others. What I don't want to do is talk to LLMs for customer support. For that, I always want to talk to a real person. It would be infuriating for an LLM to pick up when calling a business.

Re: Launch HN: Retell AI (YC W24) – Conversational Speech API for Your LLM

#166

Awesome product. We would love to use this for our app, but it wouldn't make sense economically. At $0.10 per minute it would cost significantly more than our existing TTS and SST solution. We've manually added a VAD and will have to add a way of handling interruption. All-in-all it roughly costs us $0.01 per minute and we just can't afford a 10X increase in costs. Guessing you guys have found a use case with higher…

Thanks. We get it—the current pricing doesn't fit everyone's budget. We will try to look into ways to roll out a more affordable option later.

Great. Good luck with the launch

Re: Launch HN: Retell AI (YC W24) – Conversational Speech API for Your LLM

#167
post #86

What's the difference between your product and Gridspace's? I get the sense that your offering is more developer-focused, but I'm curious if there are any technical differences.

I believe Gridspace is an IVR solution, not one based on LLM. It's challenging to ask questions that deviate from the initial settings. We're using LLM to generate responses, which makes the conversation smoother.

Gridspace CEO here. Our virtual agents use many specialized LLMs. We run these models on our own soft switches at pretty big scale. We also build the software that lets contact center operators onboard and manage LLM-based, virtual agents. A lot is at stake with virtual agents in the contact center. Contact centers need virtual agents that sound great, get the facts right and complete service tasks. Some of our customers are very technical, some are not, all deeply care about how AI represents their businesses.
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