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Claude Mythos and misguided open-weight fearmongering

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The *Interconnects.ai* article argues that fears around releasing an open-weight version of Claude Mythos are overstated, noting that closed frontier models still lead open-weight ones in robust, ...

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Come chat with me to dive deeper into the technical weeds on good harness engineering in Westminster!

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Ryan Lopopolo, a Member of Technical Staff at OpenAI, posted this tweet inviting people to discuss harness engineering with him in-person at Westminster — referencing his broader work on the topic....

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9 Apr 2026

Applications

CyberAgent moves faster with ChatGPT Enterprise and Codex

CyberAgent, a major Japanese internet and media company, adopted ChatGPT Enterprise and OpenAI's Codex to accelerate engineering and business workflows across its organization. By integrating these...

applicationsopenai

doors open on first @aidotengineer keynotes coming up on livestream - @cramforce - @RaiaHadsell - @_lopopolo - @steipete join us on YouTube!…

The AI Engineer World's Fair (AIEWF) held its keynote livestream on YouTube, featuring prominent speakers including Malte Ubl (@cramforce, CTO at Vercel), Raia Hadsell (VP of Research at Google) ,...

https://x.com/ben_golub/status/2042079804271313343

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The specific tweet at that URL (status ID 2042079804271313343) could not be directly retrieved. However, based on the available context about Ben Golub's recent X/Twitter activity around Refine.ink...

If you want an example of what this looks like in practice, check out the '/research-docs' skill I created for Claude Code https://x.com/jer…

model-releasesjerry-liu--x

If you want an example of what this looks like in practice, check out the '/research-docs' skill I created for Claude Code https://x.com/jerryjliu0/status/2041564207750246904?s=20 I built a Claude Cod

i'm not gonna lie, this is an emotional moment - when I was coming up in JavaScript, @jsconfeu was incredibly essential to my learning and p…

i'm not gonna lie, this is an emotional moment - when I was coming up in JavaScript, @jsconfeu was incredibly essential to my learning and plugging into the engineering community that became my entire

Introducing Replit AI Interviewer Nail your next interview by prepping with AI

Replit AI Interviewer is a tool announced by Replit product manager Samuel Spitz, designed to help job seekers prepare for interviews using AI. It is part of a broader series of AI-powered producti...

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Just got a nice DM from a big enterprise customer using Claude Code in one of the world's biggest codebases Here's how we made @-mentions 3x…

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The specific tweet (status/2042352720489955539) is not publicly accessible or indexed in search results, but one third-party blog did surface the directly relevant detail about the @-mentions impro...

let's fucking go fam!

I was unable to retrieve the specific content of the post at the provided URL, as X (formerly Twitter) requires JavaScript and user login to display individual posts, and the specific status ID (20...

@_lopopolo AMA for Harness Engineering https://app.sli.do/event/t8CrG7h11UrUkAQ1Amd89L

Ryan Lopopolo ([@_lopopolo](https://x.com/_lopopolo)), a Member of the Technical Staff on OpenAI's Frontier Product Exploration team, hosted an AMA on Slido in conjunction with his appearance on th...

Send all your ClosedClaw questions!

I'm not able to fetch URLs or browse the internet directly. However, I do have access to a web search tool — let me try searching for this content instead. The specific tweet (status ID 20421847775...

So what's the deal with Amazon Nova? They released Nova 2 in December, and even then, the top flight Nova 2 model trailed Sonnet 4.5. And it…

model-releasesethan-mollick--x

Amazon released the Nova 2 model family on December 2, 2025 at AWS re:Invent, comprising Nova 2 Lite, Nova 2 Pro (Preview), Nova 2 Omni, and Nova 2 Sonic, all featuring a 1-million-token context wi...

Hardware

Strength and Destiny Collide: ‘Samson: A Tyndalston Story’ Arrives in the Cloud

A timeless story of grit, faith and rebellion takes center stage as Samson: A Tyndalston Story joins the GeForce NOW library today. The highly anticipated release from Liquid Swords can now be streame

hardwarenvidia-blog

Safety

Tesla V14.3 self-driving review. The point releases will bring polish. V15 will far exceed human levels of safety, even in completely unsupe…

Tesla V14.3 self-driving review. The point releases will bring polish. V15 will far exceed human levels of safety, even in completely unsupervised and complex situations. 600 miles in with FSD v14.3 a

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Tether launches open-source on-device AI framework for developers

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Tether Operations S.A. de C.V., a company best known for operating and issuing the cryptocurrency of the same name, today announced the release of a fully open-source framework for developers to build

Understanding Amazon Bedrock model lifecycle

This post shows you how to manage FM transitions in Amazon Bedrock, so you can make sure your AI applications remain operational as models evolve. We discuss the three lifecycle states, how to plan mi

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Safety

Again, if you care about computer security, read the red team report: https://red.anthropic.com/2026/mythos-preview/

Anthropic's Frontier Red Team report (April 2026) details the cybersecurity capabilities of Claude Mythos Preview, a general-purpose frontier model that performs strongly across the board but is s...

safetyethan-mollick--x

[AINews] Meta Superintelligence Labs announces Muse Spark, first frontier model on their completely new stack

Muse Spark is the first model from Meta's Superintelligence Labs division and the debut entry in the new Muse model family, representing a 'ground-up overhaul' of the company's AI efforts. It is ...

toolslatent-space

An AI cow collar just created a billion-dollar company. Farmers draw boundaries on a phone app, and the collars guide cows using sound and v…

An AI cow collar just created a billion-dollar company. Farmers draw boundaries on a phone app, and the collars guide cows using sound and vibration. It works by collecting over 6,000 data points per

tutorialsrowan-cheung--x

If you’ve encountered garbled output like this while using GLM-5 or GLM-5.1 on our official service, the issue is now resolved. We've patche…

If you’ve encountered garbled output like this while using GLM-5 or GLM-5.1 on our official service, the issue is now resolved. We've patched the underlying inference-side bugs and will be releasing a

i'll be at ai eng london both thursday and friday, come say hi!

Eric Zakariasson posted on X (Twitter) announcing his attendance at AI Engineer London (AI Engineer Europe 2026) on both Thursday and Friday, inviting others to meet up with him. AI Engineer Europe...

Lots of love for Gemma 4! Team just told me it’s already had 10M+ downloads since last week’s launch. Gemma models have now been downloaded …

Google's Gemma 4, launched on April 2, 2026, surpassed 10 million downloads within its first week, according to Google CEO Sundar Pichai, pushing the cumulative total for all Gemma models past 500 ...

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Hardware

New Vultr Identity and Access Management Upgrades

Vultr has upgraded its Identity and Access Management (IAM) framework by replacing legacy ACLs with fine-grained, policy-driven access controls, enabling organizations to assign roles, manage permi...

hardwarevultr

Strong release! GLM-5.1 is a DeepSeek-V3.2-like architecture (including MLA and DeepSeek Sparse Attention) but with more layers. And the ben…

model-releasessebastian-raschka--x

Strong release! GLM-5.1 is a DeepSeek-V3.2-like architecture (including MLA and DeepSeek Sparse Attention) but with more layers. And the benchmarks look better throughout! Looks like THE flagship open

We partnered with @Zai_org to bring GLM-5.1 to Modal. Free to try as an endpoint for the next month. GLM-5.1 further improves upon GLM-5's c…

We partnered with @Zai_org to bring GLM-5.1 to Modal. Free to try as an endpoint for the next month. GLM-5.1 further improves upon GLM-5's coding abilities and long-horizon effectiveness. Introducing

A lot of you are asking about the :cloud tag. Here's the deal: GLM-5.1 is a 744B parameter beast. To hit that 54.9 benchmark score without t…

A lot of you are asking about the :cloud tag. Here's the deal: GLM-5.1 is a 744B parameter beast. To hit that 54.9 benchmark score without turning my M4 Mac Mini into a space heater, I run the cloud e

Anthropic's Project Glasswing - restricting Claude Mythos to security researchers - sounds necessary to me

model-releasessimon-willison

Anthropic didn't release their latest model, Claude Mythos (system card PDF), today. They have instead made it available to a very restricted set of preview partners under their newly announced Projec

Introducing GLM-5.1 for understanding research papers 🚀 Highlight any section of a paper to ask questions and “@” other papers for quick co…

AlphaXiv introduced GLM-5.1 as the underlying model powering its research paper understanding features on the alphaXiv platform, enabling users to highlight any section of a paper to ask contextual...

the current fear is is that AI homogenizes culture and turns humans into passive consumers one counterpoint: in Go, human play showed very l…

tutorialsjeremy-howard--x

the current fear is is that AI homogenizes culture and turns humans into passive consumers one counterpoint: in Go, human play showed very little improvement from 1950 to 2016 until alphago beat lee s