Hacker News

Article URL: https://www.cnbc.com/2025/04/24/perplexity-ai-enters-the-smartphone-market-with-motorola-partnership.html

Comments URL: https://news.ycombinator.com/item?id=43785643

Points: 3

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Article URL: https://roboflow.github.io/trackers/develop/

Comments URL: https://news.ycombinator.com/item?id=43785637

Points: 1

# Comments: 0

Article URL: https://en.wikipedia.org/wiki/Simon_Haykin

Comments URL: https://news.ycombinator.com/item?id=43785626

Points: 1

# Comments: 0

For everyone curious about how their devices are performing, I made an app that lets you monitor many aspects of a Mac. It is a lightweight, customizable, and very convenient app for everyday use.

Also available for iPhone and iPad.

Check it out, and I would love to hear your feedback!

Comments URL: https://news.ycombinator.com/item?id=43785177

Points: 1

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Article URL: https://www.eia.gov/todayinenergy/detail.php?id=65104

Comments URL: https://news.ycombinator.com/item?id=43785161

Points: 1

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Article URL: https://homeputerium.de/

Comments URL: https://news.ycombinator.com/item?id=43785146

Points: 1

# Comments: 1

Article URL: https://second-foundation.de/en/

Comments URL: https://news.ycombinator.com/item?id=43785136

Points: 1

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Article URL: https://maxim-gorin.medium.com/stop-writing-if-else-trees-use-the-state-pattern-instead-1fe9ff39a39c

Comments URL: https://news.ycombinator.com/item?id=43785127

Points: 1

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Article URL: https://socket.dev/blog/historical-analytics

Comments URL: https://news.ycombinator.com/item?id=43785126

Points: 1

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Article URL: https://hiddenlayer.com/innovation-hub/novel-universal-bypass-for-all-major-llms/

Comments URL: https://news.ycombinator.com/item?id=43785124

Points: 1

# Comments: 0

Article URL: https://www.theregister.com/2025/04/24/uk_publishing_body_launches_ai/

Comments URL: https://news.ycombinator.com/item?id=43785120

Points: 1

# Comments: 0

A simple social media web app that allows users to share good songs they find on YouTube.

Comments URL: https://news.ycombinator.com/item?id=43785115

Points: 1

# Comments: 0

Article URL: https://www.chromium.org/chromium-os/developer-library/guides/development/developer-guide/

Comments URL: https://news.ycombinator.com/item?id=43785114

Points: 1

# Comments: 0

Article URL: https://www.scmp.com/news/china/diplomacy/article/3307568/china-invites-european-countries-form-united-front-against-trump-tariffs

Comments URL: https://news.ycombinator.com/item?id=43785107

Points: 3

# Comments: 0

Article URL: https://workos.com/blog/saml-signature-problem

Comments URL: https://news.ycombinator.com/item?id=43785098

Points: 1

# Comments: 1

Article URL: https://www.nature.com/articles/d41586-025-01283-w

Comments URL: https://news.ycombinator.com/item?id=43785093

Points: 1

# Comments: 1

Hi HN!

I built AIColorPalettes.com in the last two days. It's an AI-powered tool that helps designers and developers find and create beautiful color palettes.

Key features:

- Generate color palettes using AI based on text descriptions

- Extract color palettes from images by uploading your photos

- Browse a curated gallery of 100+ ready-to-use color palettes

- Save favorites for quick access

- Copy color codes with one click

Tech stack:

- Next.js with TypeScript

- Tailwind CSS with shadcn/ui components

- AI integration for palette generation and image color extraction

The tool is completely free to use. I would love to get feedback from the community. What features would you like to see added? Any UX improvements you'd suggest?

This is a side project I built to solve my own problem of finding harmonious color combinations quickly. Hope you find it useful!

Comments URL: https://news.ycombinator.com/item?id=43785052

Points: 1

# Comments: 0

Article URL: https://www.vexa.ai/

Comments URL: https://news.ycombinator.com/item?id=43785050

Points: 1

# Comments: 0

Hey HN, this is Lina, Andrew, and Sidney from Lemon Slice. We’ve trained a custom diffusion transformer (DiT) model that achieves video streaming at 25fps and wrapped it into a demo that allows anyone to turn a photo into a real-time, talking avatar. Here’s an example conversation from co-founder Andrew: https://www.youtube.com/watch?v=CeYp5xQMFZY. Try it for yourself at: https://lemonslice.com/live.

(Btw, we used to be called Infinity AI and did a Show HN under that name last year: https://news.ycombinator.com/item?id=41467704.)

Unlike existing avatar video chat platforms like HeyGen, Tolan, or Apple Memoji filters, we do not require training custom models, rigging a character ahead of time, or having a human drive the avatar. Our tech allows users to create and immediately video-call a custom character by uploading a single image. The character image can be any style - from photorealistic to cartoons, paintings, and more.

To achieve this demo, we had to do the following (among other things! but these were the hardest):

1. Training a fast DiT model. To make our video generation fast, we had to both design a model that made the right trade-offs between speed and quality, and use standard distillation approaches. We first trained a custom video diffusion transformer (DiT) from scratch that achieves excellent lip and facial expression sync to audio. To further optimize the model for speed, we applied teacher-student distillation. The distilled model achieves 25fps video generation at 256-px resolution. Purpose-built transformer ASICs will eventually allow us to stream our video model at 4k resolution.

2. Solving the infinite video problem. Most video DiT models (Sora, Runway, Kling) generate 5-second chunks. They can iteratively extend it by another 5sec by feeding the end of the 1st chunk into the start of the 2nd in an autoregressive manner. Unfortunately the models experience quality degradation after multiple extensions due to accumulation of generation errors. We developed a temporal consistency preservation technique that maintains visual coherence across long sequences. Our technique significantly reduces artifact accumulation and allows us to generate indefinitely-long videos.

3. A complex streaming architecture with minimal latency. Enabling an end-to-end avatar zoom call requires several building blocks, including voice transcription, LLM inference, and text-to-speech generation in addition to video generation. We use Deepgram as our AI voice partner. Modal as the end-to-end compute platform. And Daily.co and Pipecat to help build a parallel processing pipeline that orchestrates everything via continuously streaming chunks. Our system achieves end-to-end latency of 3-6 seconds from user input to avatar response. Our target is <2 second latency.

More technical details here: https://lemonslice.com/live/technical-report.

Current limitations that we want to solve include: (1) enabling whole-body and background motions (we’re training a next-gen model for this), (2) reducing delays and improving resolution (purpose-built ASICs will help), (3) training a model on dyadic conversations so that avatars learn to listen naturally, and (4) allowing the character to “see you” and respond to what they see to create a more natural and engaging conversation.

We believe that generative video will usher in a new media type centered around interactivity: TV shows, movies, ads, and online courses will stop and talk to us. Our entertainment will be a mixture of passive and active experiences depending on what we’re in the mood for. Well, prediction is hard, especially about the future, but that’s how we see it anyway!

We’d love for you to try out the demo and let us know what you think! Post your characters and/or conversation recordings below.

Comments URL: https://news.ycombinator.com/item?id=43785044

Points: 7

# Comments: 2

Article URL: https://status.open-vsx.org/

Comments URL: https://news.ycombinator.com/item?id=43785039

Points: 1

# Comments: 0