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iOS 27, iPadOS 27, and macOS 27

https://www.apple.com/newsroom/2026/09/major-updates-for-apples-software-platforms-are-now-availa...
430•throw0101d•9h ago•484 comments

Pion, an agent designed to run any company autonomously

https://andonlabs.com/blog/why-we-built-pion
309•lukaspetersson•10h ago•344 comments

Charts built for Chat

https://dbtcharts.com/blog/charts-built-for-chat/
125•thingsilearned•5h ago•39 comments

4,400-Year-Old Tomb of Egyptian Judge Found at Saqqara with Colors on Walls

https://arkeonews.net/4400-year-old-tomb-of-an-egyptian-judge-found-at-saqqara-with-colors-still-...
38•arunbahl•2d ago•5 comments

Show HN: Macros with a Behringer FCB1010 MIDI Pedalboard in macOS

https://github.com/JamesRyanATX/fcbnerd
44•fretlessjazz•4h ago•7 comments

Dropping eBPF CPU Cost by About 90% with Memoization (Not AI Gen)

https://nathannaveen.dev/posts/dropping-ebpf-cpu-cost-by-90/
48•nathannaveen•12h ago•14 comments

XCancel service is suspended until further notice

https://xcancel.com/#
494•gaganyaan•17h ago•793 comments

Distributed Systems Classics (2017)

https://nvartolomei.com/dist-sys-classics/
247•grep_it•11h ago•56 comments

OpenAI bots knew about the RubyGems caching vulnerability

https://tenderlovemaking.com/2026/09/11/what-a-time-to-be-alive/
389•gregnavis•14h ago•329 comments

Compressing a Flag to 11 Bits

https://read.vantezzen.io/miniflags
85•bennett_dev•2d ago•38 comments

The biggest dinosaurs couldn't sit on their eggs

https://www.cbc.ca/news/science/titanosaur-eggs-9.7336841
17•BiraIgnacio•1d ago•1 comments

Principles for Fast Tokio Applications

https://dial9-rs.github.io/blog/principles-for-fast-tokio-applications/
173•carllerche•11h ago•44 comments

How my e-reader lost its stripes

https://www.serpentine.com/posts/2026/x3-stripes/
161•simonmic•10h ago•25 comments

Steam Frame starts at $1059

https://store.steampowered.com/hardware/steamframe
541•bsimpson•9h ago•418 comments

Why don't machine learning research agents overfit?

https://www.amazon.science/blog/why-dont-machine-learning-research-agents-overfit
111•Betelbuddy•10h ago•61 comments

Optimizing a Spin-Lock

https://david.alvarezrosa.com/posts/optimizing-a-spin-lock/
47•signa11•2d ago•23 comments

Cloudflare AKE cuts origin HelloRetryRequests from 52% to 3.7%

https://blog.cloudflare.com/automatic-key-exchange-for-origins/
94•iamsyr•10h ago•26 comments

Amazon vs. Perplexity – U.S. Court of Appeals for the Ninth Circuit

https://law.justia.com/cases/federal/appellate-courts/ca9/26-1444/26-1444-2026-08-04.html
180•neom•6h ago•185 comments

Ask HN: What are you working on? (September 2026)

304•david927•1d ago•957 comments

People who can't picture anything are rewriting the science of imagination

https://dailyneuron.com/aphantasia-mental-imagery-brain-network/
106•giuliomagnifico•13h ago•176 comments

A Beginning for Mathematics

https://www.daniellitt.com/blog/2026/9/13/a-beginning-for-mathematics/
175•robinhouston•11h ago•103 comments

Backprop Alternative: Augmented Lagrangian Predictive Coding

https://pub.sakana.ai/pc-alm/
50•guld•9h ago•11 comments

Show HN: Redis City – Explore how Redis works in an interactive 3D model

https://poltora.dev/redis
5•poltora•2d ago•1 comments

Notes on gotchas while migrating 35kb preprompts from Opus to self-hosted Ollama

https://patrickmccanna.net/notes-on-migrating-large-prompts-away-from-anthropic-openai-to-self-ho...
119•0o_MrPatrick_o0•13h ago•66 comments

Dario, Please

https://pop.rdi.sh/dario-please/
318•0x5FC3•12h ago•156 comments

Cua (YC P25) Is Hiring a Founding Technical GTM Lead

https://www.ycombinator.com/companies/cua/jobs/1IWEKVH-founding-technical-gtm-lead
1•frabonacci•10h ago

GPT-5.6 Luna vs. GPT-6 Astra: Is a $1.20 Model Good Enough for Code Review?

https://entelligence.ai/blogs/gpt-5.6-luna-vs-gpt-6-astra-is-a-1.20-model-good-enough-for-code-re...
119•theanonymousone•7h ago•114 comments

Ex-FTC boss Khan: break out the handcuffs for AI CEOs, citing 1934 precedent

https://www.theregister.com/ai-and-ml/2026/09/14/ex-ftc-boss-khan-urges-uncle-sam-to-break-out-th...
47•throwworhtthrow•2h ago•21 comments

Show HN: Neobrutalism.dev – Just added Base UI support and added new color theme

https://www.neobrutalism.dev/
146•samke-•11h ago•68 comments

Ubuntu 26.10 completes transition to Rust-based coreutils

https://www.omgubuntu.co.uk/2026/09/ubuntu-2610-rust-coreutils-complete
87•theanonymousone•13h ago•87 comments
Open in hackernews

Show HN: Sunk Cost – How long until a local LLM rig pays for itself?

https://sunkcost.ai/
38•rlindsey123•1h ago
I kept hearing "just buy a Mac and run models locally, it pays for itself" and wanted to check. Sunk Cost takes a machine, a model and how many tokens you use a day, and works out how long the hardware takes to pay back against renting the same model by the token.

Obviously there are other reasons to buy your own hardware aside from just saving money on llms but this is just looking at it from a raw cost saving perspective.

If you have any ideas on how I can make this more helpful lmk!

Comments

hyperhello•46m ago
I doubt it will ever be cost effective for the foreseeable future. The AI companies have astonishing amounts of compute and they’re effectively dumping it on the market.
gruez•37m ago
"If they are selling it for less than it cost to make, buy as much as you can."

-- Warren Buffett

taraindara•24m ago
Only caveat is you’re buying time. Not a physical good. It’s only worth what you’re able to get out of it in that time.
rlindsey123•24m ago
Is that a real quote? Golden if true
tyre•18m ago
For their current models, served directly from their infrastructure, they are profitable after training (which all present models are.)

I don't know when we'll have an open equivalent to Fable, let alone whatever (insane) hardware you'd need to run it locally.

cle•7m ago
It's not a simple transaction like that.

They're willing to sell it at a loss b/c users are generating training data for them which they hope to use to commoditize their intelligence, skills, and expertise.

epistasis•7m ago
More than that, running hundreds of conversation streams at once is essentially the same cost as running a single conversation. And then you add on the secondary benefit of having the GPUs running nearly all the time rather than mostly idle...

Local inference makes sense for speciality needs, or very small models. But if your model is bug enough to span GPUs its excessively wasteful to hoard those GPUs for yourself without piggybacking hundreds of other conversations on top of all that memory bandwidth and matrix multiplies.

jrflo•45m ago
43 years to break even on Qwen 3.8 at 25% the speed of the API, lol. I like the idea of local models for really small tasks like automation/toolcalling, but it will probably never make sense for coding. I tried them and it was just excruciating compared to what you get for $100 a month from a subscription.
rlindsey123•21m ago
Yeah it's surprising how long it would take to get back on those local models!
itake•45m ago
I have a home server running vibed applications. VPS host would cost $25/mo or $300/yr.

Mac mini can also build iOS applications. I think if you’re a mobile dev, you can have concurrent builds for your agents instead of everyone waiting on a single machine to finish.

rlindsey123•26m ago
What models are you running on it? I'm also an iOS dev but I find I need more frontier models to get good quality code from it.
ProjectArcturis•42m ago
Local LLMs are not really about saving money, they're about autonomy. Choose the exact model you want, fine-tune it if you want, and no one can take it away from you.
rlindsey123•13m ago
True - definitely agree!
mcone•41m ago
The idea that you need a new machine is pretty ridiculous. I bought a used HP Omen with a 3090 last month for $2k. 57t/s with Qwen 3.8.
rlindsey123•25m ago
I've not heard of others running HP with it. Hows much RAM do you have?
mcone•19m ago
This particular machine has 64GB, but the model is on the RTX 3090 with 24gb. Context is 156k with Pi mono.
usernomdeguerre•17m ago
Agreed, I was also annoyed that the only params on the site were mac products. I run qwen 3.8 on a 12 year old asus and a 3090, 50tok/s. It's not even the only guest running on the box. For my usage profile (not running it 24/7) it's actually less expensive per-month than claude subscriptions.
redox99•3m ago
I'm so happy for the two used 3090s I bought for $500 each after Ethereum mining ended. I even saw them for like $430 at some point lol.
txrx0000•40m ago
It pays off instantly, because OpenAI/Anthropic can no longer see what I'm doing and that's worth a lot of money to me. If I am offloading some of my thought processes to a machine, I want to own that machine. And if I finetune the model, I can gain access to parts of thought space that are cordoned off by OpenAI/Anthropic/Alibaba/whomever due to their "alignment" efforts (i.e. alignment to the AI company rather than me). Otherwise, it's like if someone else owns a part of my mind and has a backdoor into my mind.
no-name-here•33m ago
You can't run recent openAI/Anthropic models locally anyway, so wouldn't a better comparison be a different provider running Qwen or similar model? As then you can also compare against the exact model you'd have locally and any different data privacy of that particular provider?
txrx0000•29m ago
Technically true, but the delay between local and closed frontier is only a few months. And individual sovereignty / digital bodily integrity is almost priceless.
selectodude•25m ago
Local frontier costs a half million dollars to run locally in anything higher than basically ternary.
txrx0000•13m ago
Okay, that's technically true again, but local mid-tier like Qwen3.8-27B is only a year behind the closed frontier. I'm personally willing to be behind by a year if it gives me mental sovereignty against the big AI companies. They are extremely misaligned with me.
shadowpho•36m ago
I like this calculator but it’s really wrong at least for dgx spark. I have one and I get 4x the tokens/s .
rlindsey123•27m ago
Aw very interesting! This is great feedback - what model are you running? I'm keen to do more crowdsourced data as time goes on.
chasd00•34m ago
Not a fair comparison really. If you can run a model locally then you can somewhat train out the guardrails, censorship, and brand-safety. That has value a subscription does not.

Idk about the quality of this setup but just pasting it here as an example. https://explainx.ai/blog/heretic-llm-abliteration-guide-2026

ChickeNES•29m ago
> If you can run a model locally then you can somewhat train out the guardrails, censorship, and brand-safety.

When does the average person actually need to do that?

jerf•22m ago
We've already seen frontier models refuse to answer almost any question that touches on computer security and be very likely to kick out biology and chemistry questions even if they aren't all that close to breeding dangerous viruses or making explosives.

I expect this is only going to get worse. "Censorship" isn't just going to be about who you vote for and which political party the model will say nice things about and which it is more likely to say bad things about. It's going to become about whether the hoi polloi are allowed to have effective AIs at all. Like the 1990s internet, AI has outrun a lot of power structures but that is not going to continue indefinitely.

ChickeNES•16m ago
So you want to remove valid safeguards? And stop misusing the word censorship.
jerf•9m ago
ThunderSizzle•33m ago
Claude Code is $100+ or else be constantly throttled. My usage on GHCP was gonna be $300+ a month.

I paid $1350 and threw an R9700 in an existing machine. That's a 4 month pay off or so.

Plus, I can feed it sensitive data all day and not be worried where it's going.

no-name-here•29m ago
An R9700 has 32 GB RAM. Is your comparison against a similar size model? Or shouldn't you be comparing it against the cost of a hosted model matching the one you’re using locally?
bix6•31m ago
Fun feature: can you show some sort of list of the best combos? Eg shortest payoff time for best capability in various situations.
QwenGlazer9000•30m ago
Yeah no it does not pay for itself just comparing to cloud. Not at these prices at least, people far richer than you or I buy these things wholesale, no scalper, bought a significant amount at cheaper prices, and are wired up the ass with VC money.

The premium is not having your million dollar prize and career stolen by billionaires.

rlindsey123•25m ago
haha 100%. We used to just rent our homes. Now we have to rent our intelligence
monksy•26m ago
I wish you could put different setups on here. I have a couple of A6000s on an AM5.
rlindsey123•22m ago
I'm keen to add a way for people to add community based reporting which would allow this. Would you want to see anything else on the dropdowns to be able to enter your data on?
bpbp-mango•23m ago
can you add RTX cards too please? 5090 and 6000
gfody•22m ago
should throw in a tt-quietbox
serial_dev•21m ago
In the “The small print that isn't small” you describe all the disadvantages of running your models locally, but none of the advantages (just check the rest of the comment section for inspiration on that).
01HNNWZ0MV43FF•21m ago
I was just gonna throw a beefy Ryzen into an ATX chassis. I don't want to pay Mac prices
harhargange•20m ago
Also, i also use my gpu for rendering and learning and playing games.
Zetaphor•18m ago
This tells me that the max throughput for the models I'm running on my hardware is lower than it actually is. Please allow us to tweak all the variables instead of locking me in to whatever rate you found by searching
v3ss0n•15m ago
Besides from privacy: I already making twice now.you own the hardware and the price had doubled since i bought. Almost tripled. You missed the opportunity and i have 4 of those awesome machines. Cry on.

I sell those to business who need local air gapped requirments and I make a lot more money!

I can run the alliterated models where none of the service prvoider even dare to provide.

THose benefits outweights a few K.

And show me an api provider that allows me to run 10x agents concurrently for 5 days straights .

ChickeNES•7m ago
> And show me an api provider that allows me to run 10x agents concurrently for 5 days straights .

Any of them on a Max/Pro plan as long as you are smart about model selection? That's my main objection to local inference, I'd need a whole rack of GPUs to do as many things in parallel that I can do for $400 a month. I do plan on setting up some local inference hardware, but...RAM and GPU prices alone are $$$$

0xbadcafebee•12m ago
It pays for itself very quickly if you do 24/7 generation. Use an AI agent that orchestrates other agents working on many things at once constantly. If speed is a factor, you'd not buy a Macbook, you'd buy dual 24GB RTX 3090s. About the same price, but at least 6x as fast as a M5 Max.

The big benefit of constant generation is you can do a lot more research, coding sub-agents, experiments, etc in parallel when you're not "at work". You end up getting a lot more work done than if you only sit there babysitting sessions.

redox99•8m ago
The math is wrong, the tok/s is at least 2x that, at least with MTP and Q8 KV which you should always use. And the default tokens a day is ridiculously low at least for coding.

Having said that, it will never pay for itself. A simpler more absolute math is, if I buy a Mac and use it to sell tokens on OpenRouter, will I make a profit? And the answer is no.

afarviral•3m ago
I want the autonomy but local models of the size I would have the means to host wouldn't be capable enough. What usecases tend to suit these smaller models that tend to produce incorrect or otherwise flawed responses often? Could they work for anomaly detection and what would a rough architecture look like?
koito17•23m ago
GP's point is about "sending tokens to someone else's computer" versus "keeping the tokens locally". I think model capabilities are secondary.

In May of this year, I was running qwen3.6:35b-a3b on my MacBook (bought in 2024). Obviously not as fast as, say, running a model on Cerebras, but a year ago it wasn't really feasible to have a local model running on my 2024 laptop with vision support. (Concretely, I was passing apartment diagram pictures to Qwen and making it compare different apartments for which ones would feel the most spacious while optimizing for initial moving costs and other factors.)

This was back in May and I wouldn't be surprised if there have been significant improvements since then.

Overall, I think it's fair to compare a workflow like "use llama.cpp locally to upload some pictures and ask questions" to "open the ChatGPT app, upload pictures from your phone, and ask questions". Sure, you can't run a model like GPT-5.4 locally, but the model is mostly an implementation detail here. What a user will care about is: "when I go with the llama.cpp option, am I getting useful information from my conversations?"

no-name-here•16m ago
Wouldn't the better comparison still be against an AI provider with better privacy controls, especially if that's what someone cares about (even if they don't care about whether they're comparing a 35 billion param model vs a x trillion param model)?
koito17•13m ago
Even OpenAI and Anthropic fit the definition of "AI provider with privacy controls" if you trust that they uphold their side of the terms of service.

The thing with "sending tokens to someone else's computer" is that we, as users, have no way to audit or verify that a third-party provider, even if they advertise themselves as privacy-focused, will adhere to their own terms. This is similar to the issue of privacy-focused VPN providers that claim to not log user activity (and then end up leaking user activity in data breaches). You can get proof of ~P, but rarely proof of P, and often times the proof of ~P is due to police raids, data breaches, etc., not something of the provider's volition.

What you can possibly audit, is probably data sovereignty. For instance, I would not be surprised if Mistral's customers actually demand concrete evidence that their data is held within the European Union. But that is a distinct issue from training on input tokens.

v3ss0n•4m ago
Deepseek 4 flash can run locally , and qwen 3.8-next-flash , they are already gpt 5.6 tier.
v3ss0n•13m ago
You haven't tried DeekSeek v4 or GLM 5.3 or Qwen 3.8 Next?

You are missing out a lot.

Try that with Hermes or Opencode or Deekseek Harness , even Qwen 3.8 27b works really well for that kind of that.

I just ask it to install windows as a vm on my linux and install vs Community 2019 on it , and then build a legacy vb 2019 project on it. and sleep

When i wake up :

It installs Qemu , setup a vm , inside vm download and install windows 10 on its own , clicking next next next as needed , typing in things , writing powershell , python scripts , that run automatically after install by baking into CD that includes ssh server , reboot , it logins into ssh , trigger pythons script that continue installation of vs 2019 community , which includes a driver that click the installation steps , installs nuget , install all depedencies and then build the project into exe after i woke up.

That is with 100% pure local AI .

tyre•26m ago
I'm curious what people are sending to Claude that is so secret. Claude knows about my interior decorating, questions about light bulbs, curiosity about what the Galactic Empire was even trying to do, unpacking SCOTUS decisions, shoe trees, Fed inflation history, etc.

What part of my brain is contained here? Sure, the conversations have back and forth (some have dozens of exchanges), but, like, that's not the secret to me. I don't think it can replicate me, and even if it could… okay?

Are you worried they're going to target ads? That the government will steal something? What?

Claude Code has information about my home server, but google or DDG would also have the broad strokes (torrents). I don't know. Maybe others are working on more sensitive things at home.

poincareball•25m ago
Tristan Buckmaster found out the hard way.
octoberfranklin•23m ago
I'm curious what people are sending to Claude that is so secret.

The proof to the Navier-Stokes problem.

utopcell•6m ago
I'm pretty sure they were sending a prompt for Claude to _find_ the Navier-Stokes proof, using ideas that have been publicly shared before online, but not necessarily used for the problem.
truncate•22m ago
>> what people are sending to Claude that is so secret

Its the same point used against privacy. What's so secret you are doing that you need privacy. I think in the end, its about privacy and not trusting these model companies with your data. Facebook manipulated people behaviors with all the data they had, no reason AI companies wont someday decide to do that same, and they have far more intimate knowledge.

When it comes to coding, I also don't like the idea of them taking my money and potentially at same time potentially using as dataset generator.

jrecyclebin•25m ago
This was my thought as well. I have a local model monitoring my finances and personal wiki - things I wouldn't want Claude to touch - and the Qwen 3.5 9b handles it all just perfectly.

I also needed a new device anyway - and having this much system memory to run virtual machines has been amazing.

Am paying subscriptions as well tho lol.

catchnear4321•19m ago
Your last line is what drives the point home, though.

Local isn’t strictly about NOT lab. It’s rapidly becoming apples (though not just macs) to oranges to compare the to.

Which is why the premise is silly. To be underwater it would need to be a real comparison. It’s not, and the claude fartifact doesn’t make it so.

throwaway894345•24m ago
I’m very sympathetic to this point of view but I also can’t remotely afford the hardware required to get in the ballpark of Fable.
ChickeNES•17m ago
For me, I'm glad they train on my stuff if it improves the model. Hell, I've been using tons of muse-spark-1.3-contributor for this very reason (and because it's a decent model for a bargain basement price)
You asked a question. I gave you an answer. I seriously doubt that if you and I sat down together at a table and banged on this for an hour that we would come to the same definition of "valid". Ask 10 people, get 12 answers to that question. There's going to be a lot of motte & bailey in the next couple of years, where I just want an AI to answer questions about whether my code is vulnerable and people like you will be "Oh so you want an AI that can hack the Pentagon do you?" and it doesn't look like we're going to be seeing eye to eye on that one.
beachy•21m ago
I just got some kind of cyber alert from Claude and was forced back down to Opus while I was trying to connect to a battery I own via bluetooth.

So I can certainly understand why someone would want the guardrails gone.

ChickeNES•14m ago
Well I just applied to their cyber program, got accepted in two hours, haven't had that issue since. Ditto OpenAI. Why people treat these companies like sports teams instead of compute providers I have no idea, when I see underpriced compute, I take advantage of it.
kees99•16m ago
"Need" might be a bit too strong, but I do want overly obnoxious guardrails not to stand in the way.

Case in point, last week I was poking Opus 5 into writing me some RPi-pico firmware for driving a small e-paper screen. Font was built in right into C code as hex constants. Space being tight, I asked if there is some clever compression that could be applied. Claude thought for good 10 minutes, then guardrail kicked in telling me that was "cyber", and refused to continue.

ChickeNES•12m ago
Just apply to the cyber program? I got in in around 2 hours, and I'm just some hobby hacker, not some paid security consultant. It is a valid point though, I'm doing tons of systems and embedded stuff and was hitting the safe guards with Claude and Codex before getting into their cyber programs (hex REALLY triggered Claude in particular, which was amusing).