[TheEzEzz]

Completely agree, latency is key for unlocking great voice experiences. Here's a quick demo I'm working on for voice ordering https://youtu.be/WfvLIEHwiyo

Total end-to-end latency is a few hundred milliseconds: starting from speech to text, to the LLM, then to a POS to validate the SKU (no hallucinations are possible!), and finally back to generated speech. The latency is starting to feel really natural. Building out a general system to achieve this low-latency will I think end up being a big unlock for enabling diverse applications.

[TheEzEzz]

Since this is getting a bit of interest, here's one more demo of this https://youtu.be/cvKUa5JpRp4 This demo shows even lower latency, plus the ability to handle very large menus with lots of complicated sub-options (this restaurant has over a billion option combinations to order a coffee). The latency is negative in some places, meaning the system finishes predicting before I finish speaking.

[arcticfox]

Holy cow. That's better than the average human drive-through attendant.

[jonplackett]

This is cool. But I want to see how it handles you going back one and tweaking it.

[armini]

We've built something similar that allows you to tweak/update notes & reminders https://qwerki.com/ (private beta) here's the video demo https://www.youtube.com/shorts/2hpBTxjplIE we've since moved to training our own LLAMA as it's more responsive & we have better reliability.

[cyrux004]

This is pretty good. Do you think running models locally will be able to achieve performance (getting task done successfully) compared to cloud based ones.i am assuming for context of a drive through scenario it should be ok but more complex systems might need external infromation

[TheEzEzz]

Definitely depends on the application, agreed. The more open ended the application the more dependent it is on larger LLMs (and other systems) that don't easily fit on edge. At the same time, progress is happening that is increasing the size of LLM that can be ran on edge. I imagine we end up in a hybrid world for many applications, where local models take a first pass (and also handle speech transcription) and only small requests are made to big cloud-based models as needed.

[wordpad25]

Can you share the source code? What did you do to improve the latency?

[TheEzEzz]

Lots of work around speculative decoding, optimizing across the ASR->LLM->TTS interfaces, fine-tuning smaller models while maintaining accuracy (lots of investment here), good old fashioned engineering around managing requests to the GPU, etc. We're considering commercializing this so I can't open source just yet, but if we end up not selling it I'll definitely think about opening it up.

[7_hours_ago]

Can you at least share the stack that you're using in building this? What kind of business model are you considering in commercializing it?

[TheEzEzz]

We're design the stack to be fairly flexible. It's Python/Pytorch under the hood, with the ability to plug and play various off the shelf models. For ASR we support GCP/AssemblyAI/etc, as well as a customized self-hosted version of Whisper that is tailored for stream processing. For the LLM we support fine-tuned GPT3 models, fine-tuned Google text-bison models, or locally hosted fine-tuned Llama models (and a lot of the project goes into how to do the fine-tuning to ensure accuracy and low latency). For the TTS we support Elevenlabs/GCP/etc, and they all tie into the latency reducing approaches.

[Breza]

Neat! I appreciate your approach to preventing hallucinations. I've used something similar in a different context. People make a big deal about hallucinations but I've found that validation is one of the easier aspects of AI architecture.

[nelox]

The voice does not seem to be able to pronounce the L in “else”. What’s happening there?

[TheEzEzz]

Good question. Off the shelf TTS systems tend to enunciate every phoneme more like a radio talk show host rather than a regular person, which I find a bit off putting. I've been playing around with trying to get the voice to be more colloquial/casual. But I haven't gotten it to really sound natural yet.

[g0atbutt]

This is a very slick demo. Nice job!

[TheEzEzz]

Thanks! It's a lot of fun building with these new models and recent AI approaches.

[arktiso]

Wow, the latency on requests feels great!! I’m really curious: is this running entirely with Python?

[TheEzEzz]

100% Python but with a good deal of multiprocessing, speculative decoding, etc. As we move to production we can probably shave another 100ms off by moving over to a compiled system, but Python is great for rapid iteration.

[mach1ne]

Manna v0.7

[kortex]

Context for the unaware: https://en.m.wikipedia.org/wiki/Manna_(novel)

[swsieber]

That's way slick.

Can I ask what your background is, and what things you're used to working with? I don't have the chops to build what you built, but I'd love to get there.

[TheEzEzz]

My advice is always to jump in and start building! My background is math originally, so I had some of the tools in my tool box, but I'm mostly self-taught in computer science and machine learning. I read textbooks, research papers, code repos, but most importantly I build a lot of stuff. Once I'm excited about an idea I'll figure out how to become an expert to make it a reality. Over the years the skills start to compound, so it also helps that I'm an old man!

[simian1983]

That demo is pretty slick. What happens when you go totally off book? Like, ask it to recite the numbers of pi? Or if you become abusive? Will it call the cops?

[TheEzEzz]

It's trained to ignore everything else. That way background conversations are ignored as well (like your kids talking in the back of the car while you order).

[edge17]

How do you train for this?

[yarone]

Nice work, very cool!