Daily AI lab briefs

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Joined September 2025
Lab Brief retweeted
Claude Sonnet 5.5 is now available:
Introducing Claude Sonnet 5.5, the second model in the Claude 5.5 family. It’s a clear upgrade over Sonnet 5, runs more than 30% faster, and costs up to 30% less for most work.
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Lab Brief retweeted
In physics, an “impedance mismatch” occurs when two systems each work well but are poorly matched. In this Science Blog guest post, Harvard physicist Matthew Schwartz argues that something similar is happening with AI and science. LLMs are capable at many things, but working with them as you would with a human collaborator isn’t currently the best way to elicit their scientific strengths. To address this mismatch, Schwartz created a toolkit for exact calculations in quantitative science. Because similar calculations often emerge in very different areas of science, Claude found connections to ecology, population genetics, and a dozen other fields, and Schwartz worked with domain experts to steer it towards interesting questions. Read more about these projects here: anthropic.com/research/claud…
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Lab Brief retweeted
Replying to @thsottiaux
A nice little QoL upgrade would be an actual intelligent live goal check while we work. It should infer what you're actually building and the longer horizon, then call out when the current work is fighting that goal or jumping the gun on steps that actually matter. This would help write less code down the wrong path and the session stays productive without wasting the user's tokens or time developing trash results due to poor thought out execution.
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Lab Brief retweeted
What’s one thing that’s missing in codex that you wish we had?
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Lab Brief retweeted
Grokipedia v0.3 just released. Join @spacexai if you want to create Encyclopedia Galactica!
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Lab Brief retweeted
Next month, every line of code touching the 𝕏 system will be open source and third-party audited. Only total transparency deserves trust.
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Lab Brief retweeted
Once we have completed our review for security vulnerabilities, we will make the entire codebase of 𝕏 open source, with no exceptions. Moreover, we will invite third party reviewers to examine the system that is running to confirm that the open source code is what is running. Trust through total transparency is the only thing that should be believed.
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Lab Brief retweeted
Rolling out to Pro plans first and then all paid plans over the next 24 hours.
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Announcing Grok 4.5, our first model trained specifically for coding and agents. It was trained with Cursor and offers frontier intelligence at leading speeds and cost efficiency. x.ai/news/grok-4-5
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Lab Brief retweeted
Introducing GPT-Live, a new generation of voice models for natural human-AI interaction. Rolling out in ChatGPT starting today. You’ll want to turn the sound on for this one.
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Lab Brief retweeted
GPT-5.6 Sol, along with Terra and Luna, will launch publicly this Thursday. We’re expanding preview access globally now.
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Would you like to see Elon Musk on JRE again?
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Lab Brief retweeted
I love optimizing machines It’s like a beautiful puzzle That also achieves true usefulness
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Lab Brief retweeted
If Charlie Kirk can get shot for speaking his mind, then Elon Musk could be shot at too. Tesla should also dedicate serious resources for his safety. For now, I hope he avoids public appearances. The U.S. MUST protect @elonmusk at all cost!
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Lab Brief retweeted
AI will achieve Stockfish-level coding and generalized computer use
SpaceX has exercised the option to acquire @cursor_ai in an all-stock transaction with the goal of building the world’s most useful AI models. For the past few months, SpaceXAI has been jointly training a model with Cursor, which will be released in Cursor and Grok Build soon. We look forward to working closely with the Cursor team to advance our frontier AI capabilities
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Lab Brief retweeted
BREAKING: Elon Musk has become the world's first trillionaire. After SpaceX raised a record $75 billion in its IPO, Musk’s net worth shot up to top $1.1 trillion when the stock began trading Friday, putting him in an economic class of his own. Combined with his holdings in electric vehicle maker Tesla, as well as other investments and assets, Musk's net worth is now estimated at about $1.1 trillion. Musk's stake in the rocket and satellite company alone is now estimated at a staggering $690 billion, but it's also a life-changing moment for thousands of workers at the company who hold equity. Investors who watched Musk help turn Tesla into an automotive giant are now betting he can do the same in space and artificial intelligence, as SpaceX launches the largest IPO in history.
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Lab Brief retweeted
We've changed the trigger word from "workflow" to "ultracode". You can still say "use a workflow for this", but when you're clearly referring to something else, Claude won't kick off a dynamic workflow. For an explicit trigger, use "ultracode". We appreciate the feedback!
New in Claude Code (research preview): dynamic workflows. Claude writes an orchestration script on the fly, then spins up a large fleet of coordinated subagents in parallel to take on your most complex tasks. Use the word "workflow" in a prompt to get started.
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Lab Brief retweeted
HOLY F*CK🤯 Someone launched an open source “Palantir” called OSIRIS. 10,000+ aircraft. 2,000+ satellites. 1,400+ CCTV cams. Built-in OSINT tools. All running on a live 3D globe… straight out of a cyberpunk movie.
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Starting today, use your Grok or X Premium subscription in @openclaw. Chat with your agent, generate images and videos, or search for X posts. x.ai/news/grok-openclaw
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