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Recast launched! So happy to be part of it! It’s deeply motivating to be building something that helps get more water where it’s needed
I’ve been working primarily on the Texas and New Mexico operations software, and I also get to do physics and stretch my brain. New Mexico’s raw landscapes have a special place in my heart because it was the first US state I stayed in for an extended period. Texas is a world unto itself with a rich story and a track record for invention, engineering, and getting things done. I admire it greatly and look forward to every visit!
Like Texas, Recast is a wonderfully creative project with optimistic, unwavering resolve and a thirst for building things that work
I’ve been working primarily on the Texas and New Mexico operations software, and I also get to do physics and stretch my brain. New Mexico’s raw landscapes have a special place in my heart because it was the first US state I stayed in for an extended period. Texas is a world unto itself with a rich story and a track record for invention, engineering, and getting things done. I admire it greatly and look forward to every visit!
Like Texas, Recast is a wonderfully creative project with optimistic, unwavering resolve and a thirst for building things that work
In the past 6 months we’ve produced a cheaper, more efficient seeding material, trained a hyper-resolution AI weather model, and operated 100+ cloud seeding flights for the governments of Texas and New Mexico.
Recast Systems is coming out of stealth. Here’s some of the research (1/n)
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Stephen Fay retweeted
Attention all companies: I never want to use your AI assistant on your website. I want to use *my* AI assistant on your website
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Stephen Fay retweeted
We’re assembling a team! Join us!
My dear friends, I’ve got 3 pieces of news
First off, I’ve retired from @midjourney after 3.5 years. It’s been an honor; we've pulled off great projects, and a few open-sourced pieces like Pretext & Handwired have been well-received. I’d do it again with the team, but they’re in a grd I planned to take >6 months off
Second, unfortunately the words spread. Life comes at you fast and (this is a crazy story best told in private) I was taken hostage by the good folks at @coreauto. I started last week. Retirement will have to wait for another few years
Third, I’ve figured out a few pieces of technology I wanted to exist for a while now. Some more like Pretext, some more like Handwired, and a mysterious new thing (pic attached. First one to guess right gets a repost). Stay tuned as we start training these at Core Auto.
We’ll show the world what AI can truly achieve in the hands of kind, capable & grounded folks who choose to look up.
P.S. we’re hiring one (1) backend engineer. Only requirement is showing us your previous project’s dependencies list
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Stephen Fay retweeted
Tomer and @recast @DeepGuessr are doing amazing work for this community and the best part is, it’s completely free and for the greater good. I hope all of you in the community show them some love.
Many meteorologists have expressed concerns about losing the NAM ahead of winter when its wheelhouse is cold air damming setups. It’s not clear that the RRFS model, which is now operational, will be as skilled in that area.
Now it seems like we won’t have to worry, at least for now. Note it’s not a perfect replica but close.
I do find it interesting that one person was able to run this model on his GPU for a fraction of a fraction of the cost and storage as NOAA. I think there are lessons to be learned from this.
Many meteorologists have expressed concerns about losing the NAM ahead of winter when its wheelhouse is cold air damming setups. It’s not clear that the RRFS model, which is now operational, will be as skilled in that area.
Now it seems like we won’t have to worry, at least for now. Note it’s not a perfect replica but close.
I do find it interesting that one person was able to run this model on his GPU for a fraction of a fraction of the cost and storage as NOAA. I think there are lessons to be learned from this.
Turns out, more than a few people missed the NAM following its discontinuation.
@recast and @DeepGuessr replicated its configuration, ported it to GPU, and are disseminating its data for free in real time - and it is now live on PolarWx:
polarwx.com/models/?model=…
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Stephen Fay retweeted
Turns out, more than a few people missed the NAM following its discontinuation.
@recast and @DeepGuessr replicated its configuration, ported it to GPU, and are disseminating its data for free in real time - and it is now live on PolarWx:
polarwx.com/models/?model=…
@recast and @DeepGuessr replicated its configuration, ported it to GPU, and are disseminating its data for free in real time - and it is now live on PolarWx:
polarwx.com/models/?model=…
Turns out people really do love the NAM despite its flaws. We @recast have decided to continue to offer our WOOF-NAM 12km for free indefinitely (link below).
It’s also important to understand that we are cold starting from GFS Analysis which naturally does slightly change model outcomes compared to starting from a native NAM analysis.
Because of that, we will be running quite a few hindcasts of both popular and requested dates and model inits so people can compare. If anyone has any examples they’d like to see, I’ll run them and put it on the site.
woof-nam.recastsystems.com/index.html
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Stephen Fay retweeted
my spidey senses are telling me the labs are, as we speak, using unguardrailed versions of their unreleased models to systematically reverse-engineer ALL of the internet’s software, apps, and games, then feeding the reconstructed source code straight into their training pipelines while simultaneously building guardrails to ladder-pull the rest of us
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Stephen Fay retweeted
I told you, they will try eat all industries one by one
Introducing Personal Finance in Claude, in beta in the US.
Connect the accounts you choose, and Claude answers your money questions in everyday language, from your own balances and transactions. Access is read-only, and Claude can't move, manage, or invest your money.
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Stephen Fay retweeted
Turns out people really do love the NAM despite its flaws. We @recast have decided to continue to offer our WOOF-NAM 12km for free indefinitely (link below).
It’s also important to understand that we are cold starting from GFS Analysis which naturally does slightly change model outcomes compared to starting from a native NAM analysis.
Because of that, we will be running quite a few hindcasts of both popular and requested dates and model inits so people can compare. If anyone has any examples they’d like to see, I’ll run them and put it on the site.
woof-nam.recastsystems.com/index.html
It’s also important to understand that we are cold starting from GFS Analysis which naturally does slightly change model outcomes compared to starting from a native NAM analysis.
Because of that, we will be running quite a few hindcasts of both popular and requested dates and model inits so people can compare. If anyone has any examples they’d like to see, I’ll run them and put it on the site.
woof-nam.recastsystems.com/index.html
NOAA retired the NAM this week. We ported it to the GPU and it's back, better than ever: WOOF-NAM, open source.
- 12 km CONUS, all NAM physics, 24 h forecast in ~20 min on a single RTX 5090 (32 GB).
- 8 GPUs: 6 h in 92 s. Multi-card is bitwise to single card.
- 4 km CONUS, 24 h s. 3 km nests anywhere on Earth (Europe, Japan, CONUS): 48 h in ~7 min on one card.
SStarts from the NAM analysis or GFS today, IFS open data in the next release. Beside the operational NAM from the same cycle it's hard to tell them apart (pics).
Today it needs one 32 GB card for the full 12 km CONUS; ~15 GB is the target, coming soon.
github.com/recastsystems/…
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Stephen Fay retweeted
Resurrected NAM-12 km from @recast
Sometimes you can just do things.
Sometimes you can just do things.
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Stephen Fay retweeted
NOAA decommissioned their long-time (decades old) weather model that everyone loved like a family member. A startup in the AI space took the model and ported the code to GPU, and now for $1/day in compute, the NAM-12 km is back @recast
Resurrected NAM-12 km from @recast
Sometimes you can just do things.
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Stephen Fay retweeted
NOAA retired the NAM last week. We thought it deserved to live on, so we ported it to the GPU and open-sourced it.
We’re running the 12 km CONUS NAM ourselves, four times a day (00/06/12/18Z, 84 h, started from GFS), with the hourly files free for anyone: same awphys GRIB2 shape as NOAA’s, so an old NAM fetcher just needs a new host.
woof-nam.recastsystems.com/index.html
The 12 km shape is in the WOOF API today, 5 km and 4 km CONUS this week, so you can run your own cycles any time from GFS or IFS.
We’re running the 12 km CONUS NAM ourselves, four times a day (00/06/12/18Z, 84 h, started from GFS), with the hourly files free for anyone: same awphys GRIB2 shape as NOAA’s, so an old NAM fetcher just needs a new host.
woof-nam.recastsystems.com/index.html
The 12 km shape is in the WOOF API today, 5 km and 4 km CONUS this week, so you can run your own cycles any time from GFS or IFS.
NOAA retired the NAM this week. We ported it to the GPU and it's back, better than ever: WOOF-NAM, open source.
- 12 km CONUS, all NAM physics, 24 h forecast in ~20 min on a single RTX 5090 (32 GB).
- 8 GPUs: 6 h in 92 s. Multi-card is bitwise to single card.
- 4 km CONUS, 24 h s. 3 km nests anywhere on Earth (Europe, Japan, CONUS): 48 h in ~7 min on one card.
SStarts from the NAM analysis or GFS today, IFS open data in the next release. Beside the operational NAM from the same cycle it's hard to tell them apart (pics).
Today it needs one 32 GB card for the full 12 km CONUS; ~15 GB is the target, coming soon.
github.com/recastsystems/…
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Stephen Fay retweeted
NOAA retired the NAM this week. We ported it to the GPU and it's back, better than ever: WOOF-NAM, open source.
- 12 km CONUS, all NAM physics, 24 h forecast in ~20 min on a single RTX 5090 (32 GB).
- 8 GPUs: 6 h in 92 s. Multi-card is bitwise to single card.
- 4 km CONUS, 24 h s. 3 km nests anywhere on Earth (Europe, Japan, CONUS): 48 h in ~7 min on one card.
SStarts from the NAM analysis or GFS today, IFS open data in the next release. Beside the operational NAM from the same cycle it's hard to tell them apart (pics).
Today it needs one 32 GB card for the full 12 km CONUS; ~15 GB is the target, coming soon.
github.com/recastsystems/…
- 12 km CONUS, all NAM physics, 24 h forecast in ~20 min on a single RTX 5090 (32 GB).
- 8 GPUs: 6 h in 92 s. Multi-card is bitwise to single card.
- 4 km CONUS, 24 h s. 3 km nests anywhere on Earth (Europe, Japan, CONUS): 48 h in ~7 min on one card.
SStarts from the NAM analysis or GFS today, IFS open data in the next release. Beside the operational NAM from the same cycle it's hard to tell them apart (pics).
Today it needs one 32 GB card for the full 12 km CONUS; ~15 GB is the target, coming soon.
github.com/recastsystems/…
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Stephen Fay retweeted
hello! launched a new non-profit today. i'm on a mission to feed every canadian child in school, starting in my home province.
schoolfoodalberta.ca/announcing-sch…
schoolfoodalberta.ca/announcing-sch…
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Stephen Fay retweeted
A moment of silence for the NAM forecast model which is retiring tomorrow morning after 20 years.
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wild
We asked GPT-6 Astra to edit Qwen3.5-0.8B weights to improve math.
It directly changed only 0.016% of weights, fixing 0.8B's reasoning loops & improving math up to 6x and even instruction following 3x, without gradients or training.
We call this Weight-Space Programming: fronely read/write neural network weights! 🧵
Blog: rikiyat.github.io/blog/weight-sp…Community noteLLM was given weights explicitly as text in prompt and used code/forward passes (per authors' logs) to ablate Qwen looping direction, a known thinking-mode issue per model card. Primarily fixed repetition in that mode, not general 'natively' improving weights/math.
rikiyat.github.io/blog/weight-sp…
github.com/RikiyaT/lm_und…
huggingface.co/Qwen/Qwen3.5-0…
huggingface.co/RikiyaT/Qwen3.…
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Stephen Fay retweeted
Bacteria should have shared the 2025 chemistry Nobel Prize for metal-organic frameworks!
It’s been known for a while that there are “cable bacteria” that extrude conductive filaments up to 1 cm long, which penetrate sediments on the sea floor and allow them to draw electrons …
It’s been known for a while that there are “cable bacteria” that extrude conductive filaments up to 1 cm long, which penetrate sediments on the sea floor and allow them to draw electrons …
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Stephen Fay retweeted
i think this is real and a big deal. as karpathy said, the ugliest part of the transformer is the tokenizer
I've always believed that intelligence should come from simple, general building blocks that learn their own abstractions directly from raw data; in other words, the bitter lesson. I think we're finally seeing a real step towards AI that can learn from all data.
Language s a microcosm of this ideal, and to me it's a central problem in AI: if we can't build LLMs that learn end-to-end from bytes, how will we handle the rest of the world's data that we understand even less?
Last year we introduced hierarchical networks (H-Nets) as a first step. Our new version finds up to 3-5x efficiency gains in controlled scaling law experiments, and at larger scale matches an open-source model trained on 11T tokens with ~10x less data and compute. The posts below walk through what we found and why we think it works.
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wow! one of @WarnerTeddy's balloons made it all the way to the Iberian peninsula!
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Stephen Fay retweeted
Another Weather + GIS for Friday
All of my weather maps color tables + another 1000 --> forecasteagle.com/ramps
Use, share, have your bot produce beautiful weather maps. Stop the slop.
All of my weather maps color tables + another 1000 --> forecasteagle.com/ramps
Use, share, have your bot produce beautiful weather maps. Stop the slop.
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