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Postgres LISTEN/NOTIFY does not scale

https://www.recall.ai/blog/postgres-listen-notify-does-not-scale
289•davidgu•3d ago•108 comments

Show HN: Pangolin – Open source alternative to Cloudflare Tunnels

https://github.com/fosrl/pangolin
22•miloschwartz•4h ago•2 comments

Show HN: Open source alternative to Perplexity Comet

https://www.browseros.com/
154•felarof•8h ago•52 comments

What is Realtalk’s relationship to AI? (2024)

https://dynamicland.org/2024/FAQ/#What_is_Realtalks_relationship_to_AI
231•prathyvsh•10h ago•78 comments

Graphical Linear Algebra

https://graphicallinearalgebra.net/
177•hyperbrainer•10h ago•12 comments

Batch Mode in the Gemini API: Process More for Less

https://developers.googleblog.com/en/scale-your-ai-workloads-batch-mode-gemini-api/
20•xnx•3d ago•4 comments

FOKS: Federated Open Key Service

https://foks.pub/
175•ubj•13h ago•42 comments

Turkey bans Grok over Erdoğan insults

https://www.politico.eu/article/turkey-ban-elon-musk-grok-recep-tayyip-erdogan-insult/
81•geox•2h ago•55 comments

Flix – A powerful effect-oriented programming language

https://flix.dev/
216•freilanzer•12h ago•88 comments

Measuring the impact of AI on experienced open-source developer productivity

https://metr.org/blog/2025-07-10-early-2025-ai-experienced-os-dev-study/
513•dheerajvs•9h ago•325 comments

Red Hat Technical Writing Style Guide

https://stylepedia.net/style/
159•jumpocelot•11h ago•70 comments

Yamlfmt: An extensible command line tool or library to format YAML files

https://github.com/google/yamlfmt
24•zdw•3d ago•12 comments

Belkin ending support for older Wemo products

https://www.belkin.com/support-article/?articleNum=335419
52•apparent•7h ago•46 comments

Launch HN: Leaping (YC W25) – Self-Improving Voice AI

49•akyshnik•8h ago•25 comments

How to prove false statements: Practical attacks on Fiat-Shamir

https://www.quantamagazine.org/computer-scientists-figure-out-how-to-prove-lies-20250709/
198•nsoonhui•16h ago•153 comments

Show HN: Cactus – Ollama for Smartphones

107•HenryNdubuaku•7h ago•45 comments

eBPF: Connecting with Container Runtimes

https://h0x0er.github.io/blog/2025/06/29/ebpf-connecting-with-container-runtimes/
33•forxtrot•7h ago•0 comments

Regarding Prollyferation: Followup to "People Keep Inventing Prolly Trees"

https://www.dolthub.com/blog/2025-07-03-regarding-prollyferation/
38•ingve•3d ago•1 comments

Grok 4

https://simonwillison.net/2025/Jul/10/grok-4/
176•coloneltcb•6h ago•145 comments

Analyzing database trends through 1.8M Hacker News headlines

https://camelai.com/blog/hn-database-hype/
115•vercantez•2d ago•61 comments

Not So Fast: AI Coding Tools Can Reduce Productivity

https://secondthoughts.ai/p/ai-coding-slowdown
53•gk1•2h ago•30 comments

Diffsitter – A Tree-sitter based AST difftool to get meaningful semantic diffs

https://github.com/afnanenayet/diffsitter
89•mihau•13h ago•26 comments

The ChompSaw: A Benchtop Power Tool That's Safe for Kids to Use

https://www.core77.com/posts/137602/The-ChompSaw-A-Benchtop-Power-Tool-Thats-Safe-for-Kids-to-Use
80•surprisetalk•3d ago•63 comments

Matt Trout has died

https://www.shadowcat.co.uk/2025/07/09/ripples-they-cause-in-the-world/
139•todsacerdoti•18h ago•41 comments

Is Gemini 2.5 good at bounding boxes?

https://simedw.com/2025/07/10/gemini-bounding-boxes/
258•simedw•13h ago•57 comments

Foundations of Search: A Perspective from Computer Science (2012) [pdf]

https://staffwww.dcs.shef.ac.uk/people/J.Marshall/publications/SFR09_16%20Marshall%20&%20Neumann_PP.pdf
3•mooreds•3d ago•0 comments

Show HN: Typeform was too expensive so I built my own forms

https://www.ikiform.com/
166•preetsuthar17•17h ago•86 comments

Final report on Alaska Airlines Flight 1282 in-flight exit door plug separation

https://www.ntsb.gov:443/investigations/Pages/DCA24MA063.aspx
129•starkparker•5h ago•141 comments

Radiocarbon dating reveals Rapa Nui not as isolated as previously thought

https://phys.org/news/2025-06-radiocarbon-dating-reveals-rapa-nui.html
16•pseudolus•3d ago•5 comments

Optimizing a Math Expression Parser in Rust

https://rpallas.xyz/math-parser/
127•serial_dev•16h ago•55 comments
Open in hackernews

Perplexity launches Comet, an AI-powered web browser

https://techcrunch.com/2025/07/09/perplexity-launches-comet-an-ai-powered-web-browser/
56•gniting•1d ago

Comments

slacktivism123•9h ago
Use case for LLM-infested Chromium wrapper?
garciasn•9h ago
Videos from Perplexity as well as YouTubers show what it's supposed to do: provide you an interface to simplify your research, evaluation, and execution of written instruction.

For example: you're supposed to tell it to do something like, "plan my week for me including make me a menu plan, setup a grocery list and add everything I need to it, shop the list and allow me to pick it up on Sunday afternoon, and, in the meantime, plan for me 2 days of things to do." And supposedly, it will do all of these things for you automatically. I haven't tested it, but it basically this is intended to do all the things we've hoped AI would help us do--automatically. Will it be successful? Probably a bit better than we've come to expect, but it's nothing like we have built up in our minds.

AI has been game changing for me in my work life, but I have yet to find it useful for things like I laid out above. Maybe that's changing and this is the first step toward that future.

ParetoOptimal•8h ago
Track everything users do and sell the data.

https://news.ycombinator.com/item?id=44523226

dang•9h ago
Recent and related:

Perplexity Comet - https://news.ycombinator.com/item?id=44513769 - July 2025 (52 comments)

Comet Browser by Perplexity - https://news.ycombinator.com/item?id=44511527 - July 2025 (14 comments)

kennywinker•9h ago
Comet, you say?

Free slogan, courtesy of Joe MacMillan: “Search it, find it, comet”

:)

mpeg•9h ago
AI isn't the thing, it's the thing that gets us to the thing
owlninja•8h ago
Comet, it makes your teeth turn green...
wetwater•7h ago
One of the best shows I've ever watched.
vpShane•9h ago
Perplexity CEO says its browser will track everything users do online to sell ‘hyper personalized’ ads

https://techcrunch.com/2025/04/24/perplexity-ceo-says-its-br...

latexr•8h ago
A web browser which tracks everything you do and you have to pay for the privilege…
swed420•8h ago
It's kind of wild how the west draws this distinction:

If China does it while being responsible and taking into account cost/benefits on overall human well being, it's Creepy Big Brother Communism.

If the US does it and charges money for it (or makes it 'free' by selling your personal info to untrustworthy companies / selling you junk you don't need) it's an innovative futuristic privilege.

Cold War propaganda was incredibly effective through generations.

edit: changed "If China does it for free" to "If China does it" since it had some distracting assumptions

ericmcer•8h ago
no one in this thread is calling the tracking in this innovative. Additionally the government doesn't do anything for "free", if you make 200k a year you are paying $8k/mo or $10/hour just to live in the USA.
swed420•8h ago
> no one in this thread is calling the tracking in this innovative

I didn't say otherwise. But clearly Perplexity (and Google etc) feels there is a market fit for this, so I'm referring to those customers and whatever future customers might come. This is also nothing new. See: basically all existing social media and its consequences.

> Additionally the government doesn't do anything for "free"

I reworded this since it wasn't the point, and had some assumptions made about usage.

GlitchRider47•8h ago
I think it's worth pointing out that in China it is the government doing it, whereas in the US it is private companies (in this particular context).
swed420•8h ago
Um, obviously? You seem to have missed the point.

People ought to be most interested in the final outcome of each example.

notahacker•7h ago
Yeah. However wild some of the "America is the land of the free, China is a hellhole" takes are, there is a difference between a tracking system designed to try to sell you holidays and a tracking system used to identify political dissidents.
swed420•6h ago
> there is a difference between a tracking system designed to try to sell you holidays and a tracking system used to identify political dissidents

I have a feeling this assumption will age poorly.

GlitchRider47•5h ago
Why? People are openly dissident in the US.
swed420•4h ago
On the HN front page today:

U.S. will review social media for foreign student visa applications

https://news.ycombinator.com/item?id=44524749

History tells us it won't stop here.

GlitchRider47•1h ago
Background checks on visa applicants is a farcry from digital surveillance to identify political dissidents. Although, I would agree with the notion that the US government has been increasingly becoming a surveillance state, but not nearly as pervasive as China.
roboror•8h ago
Can you give an example of what China produces for free to the benefit of overall human well being, as well as instances of people calling Comet "an innovative futuristic privilege?"
swed420•8h ago
https://old.reddit.com/r/stupidpol/comments/1lvoi0x/theres_a...

https://www.goodreads.com/book/show/38242135-ai-superpowers

https://news.ycombinator.com/item?id=44523917

roboror•6h ago
Are you unable to articulate your own response? These links don't do anything to help you.
swed420•5h ago
They point people who are interested to the information without me having to spoon feed it to them. If you're not interested, don't click.
roboror•5h ago
This is the equivalent of being on stage at a debate, putting a book on the podium and leaving.
swed420•4h ago
The reason the live debate format isn't taken seriously by intellectuals is because it's not a competition in the pursuit of truth but in deception and theatrics.

Continue making excuses to not investigate the thing you clearly don't want to hear.

internetter•8h ago
This reads like the onion
itsoktocry•8h ago
Just pitching to VCs...why would any person want that?
MangoToupe•7h ago
Ah. Well this explains why they didn't go with the pitch that AI can be a sufficient adblocker, which strikes me as the obvious use of AI.
qoez•9h ago
I've always wanted a browser with a subscription fee
jabroni_salad•7h ago
don't let your dreams be dreams

https://www.aol.com/products/browsers/desktop-gold

notahacker•7h ago
I wonder how many people pay that just for the nostalgia. Do they have the "you have email" voice?
whyenot•8h ago
Wow, $200/month for the privilege of being monetized and tracked even more closely than Chrome does. Sounds like a real winner.
felarof•6h ago
if you want an open-source, privacy-first option -- check out https://news.ycombinator.com/item?id=44523409 :)
phyzome•8h ago
Perplexing indeed.
Havoc•8h ago
Can't say I have much trust in any of these recent AI company launched browsers.

They have a proven track record of not respecting people's data...

rpastuszak•7h ago
I very rarely diss other people’s work, but Arc/Dia is a perfect example of that. It’s a wolf in sheep’s clothes, without any clarity regarding their business model.
dawnofdusk•7h ago
Not sure if it's the perfect example. Pretty sure Arc was shady before it had any AI stuff.
felarof•8h ago
We just launched an open-source alternative -- you can download today; use local LLMs with ollama and not pay $200/month.

https://news.ycombinator.com/item?id=44523409

eGQjxkKF6fif•7h ago
Whats the outlook for Linux with that
felarof•6h ago
this is on our radar, we should have a linux build in 2-3 days!

we have macOS and windows build as of now.

GlitchRider47•8h ago
IMO this is not a true launch, just a beta only available to those who pay top dollar.
rvz•8h ago
Right after the "launch", most of the people that are praising the browser are either employees, paid influencers or fans of the CEO.

I am yet to see a normal "non-tech" person use Perplexity after being a longtime ChatGPT user.

panarchy•3h ago
How do we know it isn't just Vomet making comments about itself?
freedomben•8h ago
Maybe off-topic, but there are lots of rumors flying - will Apple acquire Perplexity?
havaloc•7h ago
Apple should acquire Perplexity - it's a pretty great product and combined with some privacy enhancements it's a win, and they could likely integrate it better than Google could with Gemini.
criddell•7h ago
> it's a pretty great product

Is it?

I was gifted a pro subscription for a year and after trying it for a few weeks I instead signed up for an Anthropic Claude subscription (which I pay $20 / month for) and I use that all the time.

What am I missing about Perplexity?

felarof•6h ago
+1, I bought perplexity pro annual subscription last year, and hardly use it now.

chatGPT+o3 search is much better.

My typical workflow is fire the question to Google AI mode and chatGPT+o3 at the same -- AI mode is fast but meh answer, chatGPT is slower but pretty good answer always.

Agraillo•3h ago
As a cultural synthesizer ("create a sketch...") or translator (i.e., from human to programming) perplexity is as good as the others and maybe worse. But I like it as being an alternative semantic web search engine. Search engine because most of the time the facts are referenced at the end of the paragraphs and when it fails to insert them, I usually ask to expand. It's a new feeling after all those years of PageRank dominance. For example, It sometimes creates a paragraph with a reference to some recent research that according to the PageRank logic should be at the bottom (because almost nobody cites it). It's like the relevance was reborn. Once it was in a primitive sense of the early AltaVista, then Google killed it with PageRank, now when an engine really understands the question, the answers might become relevant in a new sense while being tangential to the reputations of the sources
alwillis•7h ago
Not just Perplexity but Anthropic as well, which would my preference.
dawnofdusk•7h ago
Is Apple supposed to be one of the kind and benevolent megacorporations?
criddell•7h ago
I would assume basic functionality would be included but advanced functionality would require a subscription to Apple One (or whatever it's called now).

So I wouldn't describe them as kind and benevolent, more that they want to make products people will pay for.

tempest_•7h ago
No public company can be "benevolent"

Apple still makes 10s of billions a year letting Google be the default search, they have a vested interest in maintaining that revenue.

Plus whatever "values" they have will go right out the window if the golden iphone shaped Goose ever stumbles.

alwillis•3h ago
To the degree that it matters, I believe Apple and Anthropic values are more in alignment than say, Apple and OpenAI.
alwillis•3h ago
Plus Apple and Anthropic appear to be collaborating [1].

[1]: "Apple Partners With Anthropic for Claude-Powered AI Coding Platform" -- https://www.macrumors.com/2025/05/02/apple-anthropic-ai-codi...

layer8•7h ago
We do not need any more big-tech concentration than we already have, rather less.
okdood64•7h ago
As I understand it they don't even make any competitive foundational models themselves? Isn't that the kind of talent Apple is after?
felarof•6h ago
Even if apple buys, would they kill Safari? I don't think so -- comet will have to die in that case.
symisc_devel•7h ago
Imagine paying $200/mo for this privacy nightmare
lvl155•7h ago
I don’t get it. Didn’t they launch this already a few month ago?
evo_9•7h ago
You’re probably thinking of The Browser Companies Dia Browser (replaced Arc). Came out last month, same AI focus.
senko•7h ago
I see multiple comments decrying the browser price.

Have we collectively forgotten how to read?

The browser is not $200/mo. It's available for free to those on the Max plan now, and will be rolling out to other plans.

I imagine users on all those plans get some value out of Perplexity other than the browser.

glimshe•3h ago
So... The main feature is the homepage setting and an AI tag that everyone else has had doe months?