Rigorous evaluation of medical AI is good for everyone, and we welcome it. Counter to a half-dozen independent studies from institutions such as the Mayo Clinic that were highly positive on OpenEvidence—a lone paper now purports to show that generalized AI beats specialized clinical AI (@UpToDate, @EvidenceOpen). The paper has a massive undisclosed conflict of interest and irredeemable methodological flaws. Behind the scenes: The study authors run a competing in-house medical AI at their hospital, and asked OpenEvidence for an API to power it — including rights to build a "competing product" with OpenEvidence's own API. OpenEvidence declined. Then, this paper coincidentally appeared. Point-by-point, looking closely at the datasets used in the study, the disingenuous and fatal flaws become immediately apparent 🧵.

https://t.co/X30nL2NSpH

Anthropic Claude Builder Day. Fancy way to say hackathon in San Francisco. If it wasn’t for the pulling of Fable last night this was also to be a celebration of Anthropic’s launch. In talking with builders a few told me they were disappointed because they loved Fable in the few days they had to build. All had stories about how much better Fable is than other models they have tried. People came from all over the world to participate and so there was a bummed undertone that they couldn’t use Fable but other than that I was impressed by the breadth of what people were building and had great conversations with lots of builders about the state of the art of AI and various companies being built. The Anthropic employees I talked with obviously stayed away from commenting on the news. The ones I talked with, who ran the event, are on the startup relationship team, and reminded me of doing that kind of work at Microsoft and Rackspace earlier in my career. It is impressive to see hundreds of builders all working with AI building different things. This picture is just of one of the rooms, which is at the Ferry building, one of San Francisco’s most famous and historic buildings with a glorious view of the bay. Held at @SHACK15sf. In replies are the top seven teams presenting. I didn’t meet anyone else who wasn’t building other than the judges. Feel very blessed to be able to hang out with people building the future. And came away much more impressed with the love of Anthropic and the quality of people working there, who are just as head spun by last night’s events as we all are. Those of us who mouth off here on X often forget about all of them in times like this. So tip of my hat to them.

SITUATION DETECTED: The city of Rio de Janerio has post-trained a model. Based on Qwen 7/2, Rio 3.5 Open 397B adds SwiReasoning on top of the base Qwen model — a framework that dynamically switches between standard chain-of-thought and latent-space reasoning, guided by entropy-based confidence signals, so the model only "thinks out loud" when it needs to and otherwise reasons silently in hidden space for better token efficiency.

Today we're releasing ZONOS2, our next-generation real-time TTS model with high-fidelity voice cloning. ZONOS2 is the most expressive open-source TTS model, released under Apache 2.0 and available on Zyphra Cloud on @AMD. 🧵 https://t.co/WvI7PXS80M

I'm seeing a lot of angry people lately... remember, you can always run your coding agent locally ;) llama.cpp + OpenCode = fast, reliable and private inference. This is @UnslothAI North-Mini-Code-1.0-GGUF running at ~50 tokens/s on my Macbook https://t.co/rRtwuAA2kY

Released last week, and already more than 4M downloads on HuggingFace alone 😊 This makes Gemma 4 12B the most popular encoderfree VLM by a large margin. In addition to being the first-ever general purpose LLM with encoderfree audio input! https://t.co/qT0noJtMSD

Loss convergence is up 3-1. https://t.co/sZiEaOWhtn

Alibaba Qwen3.7 slowly fading into irrelevance at the frontier due to proprietary stance. In it's place we have Minimax M3 and... *checks notes* Rio 3.5 397b, made by the municipal IT company of Rio de Janeiro's city government. https://t.co/JgIJYVhoEi https://t.co/lVR83aAvPD

Interesting article with new details on the lead up to the export controls. Both sides are telling very different stories. Anthropic says they were given a 90 minute hard deadline to pull both models. The administration says their concerns were not taken seriously. https://t.co/ewuTzYtzwA

The AI race is becoming a national security race. The reported role of Amazon’s discussions with US officials in restricting access to Anthropic’s most advanced models highlights how strategic AI has become. The next battleground in AI may not be model performance. It may be who gets access to the most powerful systems.

@tunguz you gotta elaborate what "something really big happened" means otherwise i'm hitting you with a vagueposting meme 😄 https://t.co/LZAgKo8ZLi

One full-size 3D brain. Every voxel, no lossy latent. Generated in 1s. That's WaveDiT, 𝗲𝗮𝗿𝗹𝘆 𝗮𝗰𝗰𝗲𝗽𝘁 at #MICCAI2026 (top 9% of submissions). Now we can finally unveil it. 🧠 Try it live in your browser, no install: 🤗 https://t.co/FdjlMBTsOa 🌐 https://t.co/5bPpMoZfSZ

At Stability AI, I contributed to HDiT (invented by my colleague @RiversHaveWings) as a side project to explore some diffusion research outside of the medical AI work I was doing. What's interesting to see is how this project has also been used in medical AI research as well! In this paper, the authors use HDiT directly applied to the wavelet domain to train a diffusion model to generate 3D brain MRI scans.

Crunching hard at Claude Build Day (@cerebral_valley @ClaudeDevs 🔥) Model’s down… but the vibe is still UP!!! Hope Fable comes back to me soon @mochipomsky ✨ https://t.co/R7xE2PPOIS

+2 more

I haven’t stopped scrolling this European content. They love America. Can we trade the liberals and keep them? https://t.co/73AImUby5H

Thank you, Rio! 🇧🇷 Spoke at @WebSummit, ate papaya every day for breakfast, got chased by a monkey, drank my first Guaraná, celebrated Brazilian Valentine’s Day, got meat sweats, rode a bike from Ipanema to Copacabana, bought some Samba records. https://t.co/R32hxVimk8

+1 more

Thinking about learning CAD? @sendcutsend Community College is our free CAD education program designed to take you from the fundamentals to designing real parts for manufacturing. Two semesters: Sheet Metal + CNC Check it out 👇 https://t.co/dlqIJiLSPG

If she wasn’t working for Elon Gwynne Shotwell would be hailed as an incredible success story and the most powerful woman in aerospace. Instead it’s radio silence from the media https://t.co/huLwUY31rx

In the several days I've had Siri AI, it has blown away my expectations. It has handled every task and question I've given it, even complex multi-step ones across Photos, Notes, Calendar, and context from my Safari web history. Apple is redeeming itself. https://t.co/gMiywijIKV

Follow robot, It may look like a loyal little robot dog carrying your stuff and following you around, but it's actually an industrial-grade logistics transport robot. https://t.co/MfaaLOhfYU

@sarahzorah A room of builders! https://t.co/VtBoeS6rhN

@Dan_Jeffries1 Tapestry. https://t.co/5MOgouVplV

Like when there was an export control on computers above 1 GFLOPS and when the Sony PlayStation-2 came out in 2000, it was above the limit 😅 https://t.co/MapuQUvMsw

In San Francisco and met @simulatedLiam. His system cloned my voice in a few seconds. His service does this so you can talk to yourself about what is going on in your day. A mini me. We talk about what it means and get a demo. You can try it at https://t.co/XTb8mbixHy He said doing this wasn’t possible a few months ago. Mine sounds just like me. Uncannily like me. Voice tech is getting nuts.

Everyone can see Anthropic's hypocrisy in pushing toward RSI while warning that doing so creates catastrophic risk. These All-In guys might not know the insiders' party line, the galaxy-brained “someone else will build it if we don't” logic. But they're still right: It's crazy. https://t.co/K7XC5Mob9L

Very cool work!! Modality Forcing gets SOTA on 4 out of 5 monocular depth estimation benchmarks. 🏆 Explore the paper and evals here: https://t.co/i9WcxlpIdY https://t.co/eKNlbOUqWu

Instead of discussing how Elon Musk is now the world's first trillionaire, we should talk about how he killed hundreds of thousands of people through his dismantling of food and medical aid to poor countries https://t.co/8kY171r5w1 https://t.co/XSz87T4hHE

@ItsAditya_xyz @durov https://t.co/vJC2Hj5nq4

@durov Already in Hermes Agent, enjoy! https://t.co/vJC2Hj5nq4

Hey @OpenAI where on the merch store can I get this table. https://t.co/uYRa84NOyt

@MatterTurbulent @robdubparker @Jeff9James @rabbit_hmi You can run `hermes skills config` to disable them, or delete them. We also have this coming soon: https://t.co/Ie1JPmttC6