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spruce_tipson On the Navier–Stokes Millennium Prize Problem

what counts as discounted rate plans? if i pay for a year in advance (and get the yearly discount) and have train on my data set to off.. are you saying that is still being trained on?

spruce_tipson MIT Technology Review has confirmed that posts on Moltbook were fake

Yea I knew embeddings I just didn’t quite understand it in OPs context. Makes sense, thanks

spruce_tipson MIT Technology Review has confirmed that posts on Moltbook were fake

sorry - what do you mean by embeddings in your last sentence?

spruce_tipson Vouch

https://github.com/JoeBerg8/tollbooth

this was part of a little saas tool i was building (since retired it) so spent some time today having an LLM help me pull it into a headless service. far from perfect but sharing anyway. details in readme!

spruce_tipson Vouch

https://github.com/JoeBerg8/tollbooth

spruce_tipson Vouch

https://github.com/JoeBerg8/tollbooth

spruce_tipson Vouch

no one paid me but didnt really have this running for very long on my inbox. was really just a poc. and you're right - the human side is weird. surprisingly hard to solve the "real human, not spam, that's also an email address you see for the first time" scenarios, which there are many of - even with LLMs

spruce_tipson Vouch

I built a side project to solve this for myself that’s basically an inbox toll system. It funnels emails from unknown senders into a hidden mailbox and auto replies to the sender with a payment link. After the sender pays, the email gets released to recipient’s main inbox. Recipient can set custom toll amounts, whitelist, etc.

Would be happy to share the code, just lmk!

spruce_tipson Claude Opus 4.6

Opus is a superior brand line to Sonnet because historically it’s been a more powerful model. I think the thinking behind a rebrand is that people wouldn’t have as willingly switched their usage over from opus 4.5 since that model has been so popular since December 2025.

Calling it part of the Sonnet line would not provide the same level of blind buy in as calling it part of the Opus line does

spruce_tipson Claude Opus 4.6

Ah yes, explains why it takes 3 seconds for a new chat to load after I click new chat in the macOS app.

spruce_tipson The Codex App

Tried it, not impressed. Terrible UX and generally just confusing. Didn't really intuitively know where to go and why. The thing that made me most mad was the clunkiness around pulling specific files into the chat input as context. Like wtf, bad, bad, bad!

spruce_tipson Will Google Become Our AI-Powered Central Planner?

https://read-faster.com/read/SgIcbUqJ

spruce_tipson Eat Real Food

wow, it's almost like this makes sense

spruce_tipson Graphite is joining Cursor

composer 1 has been my most used model the past few months. but i only use it to execute plans that i write with the help of larger, more intelligent models like opus 4.5. composer 1 is great at following plan instructions so after some careful time providing the right context and building a plan, it basically never messes up the implementation. sometimes requires a few small tweaks around the edges but overall a fantastic workflow that's so delightfully fast

spruce_tipson GPT-5.2

it took me a lot of tinkering to get this feeling seamless in my own apps that use the api under the hood. i ended up buffering every token into a redis stream (with a final db save at the end of streaming) and building a mechanism to let clients reconnect to the stream on demand. no websocket necessary.

works great for kicking off a request and closing tab or navigating away to another page in my app to do something.

i dont understand why model providers dont build this resilient token streaming into all of their APIs. would be a great feature

spruce_tipson Anthropic acquires Bun

try java 25, and update your priors :)

spruce_tipson Building more with GPT-5.1-Codex-Max

it's in cursor only

spruce_tipson Google, Nvidia, and OpenAI

no, i dont think it's a heavier lift to test different model families. my point was that swapping models, whether that's to different model families or to new versions in the same model family, isn't straightforward. i'm reluctant to both upgrade model versions AND to swap model families, and that in itself is a type of stickiness that multiple model providers have.

maybe another way of saying the same thing is that there is still a lot of work to make eval tooling a lot better!

spruce_tipson Google, Nvidia, and OpenAI

I agree there is no moat to the mechanics of switching models i.e. what openrouter does. But it's not as straightforward as everyone says to switch out the model powering a workflow that's been tuned around said model, whether that tuning was purposeful or accidental. It takes time to re-evaluate that new model works the same or better than old model.

That said, I don't believe oai's models consistently produce the best results.

spruce_tipson Building more with GPT-5.1-Codex-Max

100% agree. composer-1 really has been the sweet spot for me of capability, reliability, and speed. i dont ask it to do too much at once, and this approach + its speed, materially speeds my work up. i generally find i get the most out of models when i feel like im slightly underutilizing their capabilities. the term i use for this is "staying in the pocket"

spruce_tipson MIT Study Finds AI Use Reprograms the Brain, Leading to Cognitive Decline

yes, in a software engineering context, always use ask mode instead of agent mode unless youre truly doing dumb, tedious work that youve done many times before

spruce_tipson GPT-5

lol

spruce_tipson GPT-5

Wonder if deprecating direct access means the gpt5 can still route to those behind the scenes?

spruce_tipson GPT-5

These presenters all give off such a “sterile” vibe

spruce_tipson Ask HN: What are you working on? (July 2025)

Building low cost tools to give email owner's their attention back.

1. Inbox Toll - solves the "real human, still spam" problem by making the sender pay a fee before the email actually lands in your inbox. Set your toll as low as $0.01.

2. Auto Label - automatically label (+ optionally archive) all non-human messages into logical categories like newsletters, receipts, promotions, etc.

3. Inbox Cleaner - time-based inbox scan that bulk deletes non-essential emails.

---

junkmailcleaner.com

spruce_tipson Asyncio: A library with too many sharp corners

checkout java 23. it has come a long way

spruce_tipson Tell HN: Help restore the tax deduction for software dev in the US (Section 174)

honest question - why dont companies just hire software engineers under the guise of some other title like "researcher"? would that allow them to get around the 5 year depreciation? how is it even enforced?

spruce_tipson OpenAI to buy AI startup from Jony Ive

interesting, but not surprising

spruce_tipson OpenAI to buy AI startup from Jony Ive

doesnt mean the video isnt ai generated

spruce_tipson OpenAI to buy AI startup from Jony Ive

i thought so too. way too weird looking. there's a reason they zoomed on their faces whenever they were talking - to hide the unnatural hand movement