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iPhone Duo

https://www.apple.com/iphone-duo/
905•thecosmicfrog•7h ago•1708 comments

Shopify acquires Tailwind

https://tailwindcss.com/blog/tailwind-is-joining-shopify
898•EdwinHoksberg•12h ago•356 comments

What do Visa and Mastercard do? An intro to card networks

https://tautology.town/2026/06/01/card-networks.html
384•evakhoury•1d ago•227 comments

AirPods 5

https://www.apple.com/newsroom/2026/09/apple-introduces-airpods-5-with-best-in-class-open-ear-act...
379•awad•8h ago•309 comments

Growing proof that autonomous cars save lives

https://spectrum.ieee.org/are-self-driving-cars-safe
217•bookofjoe•8h ago•421 comments

No Man's Sky Cosmos

https://www.nomanssky.com/cosmos-update/
304•Limb•10h ago•327 comments

iPhone 18 Pro and iPhone 18 Pro Max

https://www.apple.com/newsroom/2026/09/apple-debuts-iphone-18-pro-and-iphone-18-pro-max/
284•meetpateltech•8h ago•297 comments

Show HN: Compute polynomials twice as fast

https://thomasahle.com/fast-polynomials/
11•thomasahle•17h ago•0 comments

GPT-6 Astra, looped transformers, and hidden reasoning

https://magazine.sebastianraschka.com/p/gpt-6-astra-looped-transformers-and
354•ModelForge•11h ago•124 comments

Factoring RSA 260

https://cognition.com/blog/factoring-rsa-260
36•samyok•5h ago•5 comments

Apple Watch Series 12

https://www.apple.com/newsroom/2026/09/introducing-apple-watch-series-12-with-the-all-new-health-...
217•Lealen•8h ago•259 comments

Qwen 3.8 follows GPT-5.5 Pro reasoning prefills

https://gist.github.com/wsxiaoys/e0286dc6bb624ff5fdf49e7f4c528ba3
178•wsxiaoys•8h ago•72 comments

Desert Ant Labs: local, fast models that run on device

https://desertant.com/blog/introducing-desert-ant-labs/
401•willwhitedc•14h ago•93 comments

Automattic's board forces CEO Matt Mullenweg into leave of absence

https://techcrunch.com/2026/09/09/automattics-board-forces-ceo-matt-mullenweg-into-leave-of-absence/
41•LeoPanthera•2h ago•102 comments

GNU Radio in the browser

https://gnuradioworld.com/
175•kristianpaul•10h ago•23 comments

Seismic Isolation

https://www.ligo.caltech.edu/page/vibration-isolation
5•pillars•3d ago•0 comments

The Kuycon P20 – 28" 4500x3000px 3:2 monitor

https://taoofmac.com/space/reviews/2026/09/06/1800
24•zdw•3d ago•10 comments

How I advertise malicious software on Google Ads

https://xlii.space/eng/malicious-software-on-google-ads/
361•xlii•14h ago•220 comments

I'm sorry, you're not going to die from an AI-engineered supervirus

https://blog.genesmindsmachines.com/p/im-sorry-youre-not-going-to-die-from
47•jryb•1h ago•55 comments

Blizzard Workers Win Historic Union Contract

https://www.gamespot.com/articles/blizzard-workers-win-historic-union-contract-that-could-set-a-n...
100•dbg31415•3h ago•23 comments

The UN challenges five centuries of cartography

https://www.not-ship.com/united-nations-map/
49•speckx•9h ago•61 comments

Understanding the recent DDoS attack against Read the Docs

https://about.readthedocs.com/blog/2026/09/2026-ddos-attack/
161•davidfischer•10h ago•53 comments

Planet Labs' open satellite feed

https://tech.marksblogg.com/planet-labs-open-satellite-feed.html
147•marklit•10h ago•27 comments

Electrostatic Cathode Ray Tube Project 1 (2014)

https://labguysworld.com/Project_ESCRTs_001.htm
15•userbinator•1d ago•4 comments

Bespoke: A programming language for people who say please

https://blog.hofstede.it/bespoke-a-programming-language-for-people-who-say-please/
134•birdculture•3d ago•30 comments

Microsoft says email spammers are adopting ASCII smuggling

https://arstechnica.com/security/2026/09/once-popular-for-attacking-ai-ascii-smuggling-is-embrace...
47•utiiiD•4d ago•27 comments

Use Vsock with Libzmq

https://blog.remijouan.net/posts/libzmq-vsock-pyzmq/
25•remijouannet•2d ago•2 comments

Claude, change the “Add to Cart” button to blue

https://opusfived.dev/
1021•matthieu_bl•16h ago•399 comments

Ancient cave art suggests first known humans in Ireland walked over from Wales

https://www.bbc.com/news/articles/c5y75dl0jpko
49•bookofjoe•2d ago•9 comments

What will our economic future look like?

https://www.anthropic.com/institute/econ-scenarios
179•oumua_don17•12h ago•349 comments
Open in hackernews

Building an agentic image generator that improves itself

https://simulate.trybezel.com/research/image_agent
67•palashshah•1y ago
Hey HN! We recently graduated from YC, and have been building customer personas for large e-commerce companies. We recently expanded into the image generation space, and have been working on research about how to automatically improve the quality of generated images.

Comments

average_r_user•1y ago
Quite interesting, do you have some documentation of your platform and capabilities? Your landing page is quite synthetic
palashshah•1y ago
hey! we're working with an initial set of customers, and plan to launch full capabilities soon. stay tuned :)
ramesh31•1y ago
This is a wonderful writeup of building a simple agentic system in general. What OP describes is more or less the bare minimum you should be doing at this point to get good (consistent) results from an LLM; single-shot prompting is a thing of the past.
palashshah•1y ago
appreciate the compliment! yep, it's definitely necessary and is the bare minimum for building image generation systems in production.
shmoogy•1y ago
I'm surprised you landed on using o3 as the judge - we found it way too expensive. I use llm as a judge for generating color variations of products, definitely hoping for some improvements - it can be brutal to get non hallucinated features along with proper final rendering.
omneity•1y ago
Have you tried open weights vision models such as Qwen VL, MiniCPM, PaliGemma...?

I'm also curious how usable are simpler vision models such as Florence in case you explored this direction.

palashshah•1y ago
we're currently in the process of doing this. i think something that could potentially work is to iterate upon the initial image composition / structure using cheaper models, and then upscale at the end. this way you're saving on that iteration cost, but eventually land on a higher-scale image.
shmoogy•1y ago
I actually haven't but nova from Amazon was surprisingly good at things like bounding boxes compared to some others You kind of have to test and measure so many different aspects to get the best at specific tasks Thanks for the idea
elif•1y ago
This is great and provides a good starting point for any similar efforts.

However I think the temptation to lean all tasks on AI is perhaps a little naive if not lazy.

For mask generation, there is really not much reason to use AI. In this example, simple stochastic blob detection, a trivial function you could get from openCV or ask a college sophomore to write would generate much better quality masks.

palashshah•1y ago
totally agreed here. i think my goal primarily with the mask generation was to test out how effective openai's capabilities were.

we're currently working on pipelines that limit the the involvement of AI to various tasks. for example, when generating an ad there's usually logo, some banner text, and background image.

we can use gpt-image-1 to generate the background image, another LLM to identify the coordinates of where we place the logo, and just add the logo onto the image. this is just one example!

jackphilson•1y ago
Why do you agree? I think we should outsource as much as we can to abstraction. We've been doing it forever.
dandelany•1y ago
"Simple stochastic blob detection" is an abstraction. You write (or import) a function where the the gnarly logic lives and call `detectBlobs()`. "Use an abstraction" doesn't mean you should use the same abstraction for every task, you should use the right tool for the job.
mentalgear•1y ago
Again another example of "the unreasonable effectiveness of LLMs in a loop". At with time, the tasks for loop become bigger and more complex, until we find ourselves "outlooped" at least job wise.
ramoz•1y ago
Nice retrospective but I guess this process is no longer needed as model's get better; esp as they start enabling features like consistent subjects. Seems like a lot of overhead to correct text for inspirational images, but I can imagine you need to always present some form of _quality_ to your clients.

Feel like control nets and some minimal photoshop work would've been better.

palashshah•1y ago
totally. it got to a point where most of the text generated in our images was incorrect, and so it wasn't a great look showing that to our clients.

we're actually working on some form of what you described where we take images generated from LLMs + add consistent logos discretely rather than generatively.

abshkbh•1y ago
Palash this is a great post, I learnt a lot as an image gen noob! Keep writing more :)
palashshah•1y ago
this is incredible to hear! i plan to keep writing on a weekly basis, and will be posting them on twitter.
t_mann•1y ago
I was kind of hoping this would be in the 'Dreambooth mold' of finetuning open weights models. I have used that with some success some ~2 years ago, does anyone know what improvements there have been in that direction since Dreambooth?
zahlman•1y ago
It's frankly amazing to me that "ask another LLM to evaluate the image" actually produces useful feedback that results in actual improvement from the first LLM.

But then, I guess it's not much different of an idea from the earlier use of GANs, or of telling LLMs to "stop hallucinating", etc.

palashshah•1y ago
totally. the way i think about it (purely based on intuition) is that asking an LLM to do understanding + image generation is too complex for it to be effective. if we separate out the tasks into discrete steps, the evaluation becomes better, and the generation simply becomes instruction following.
jacob019•1y ago
This is all edited with gpt-image-1? The revised images are amazing. Were example logos provided or is it just working off of it's knowledge of a well known brand?