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LessWrong posts by zvi

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technology philosophy

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42:03

“ChatGPT-5.3-Codex Is Also Good At Coding” by Zvi

LessWrong posts by zvi ·

2026/02/13

OpenAI is back with a new Codex model, released the same day as Claude Opus 4.6.The headline pitch is it combines the coding skills of GPT-5.2-Codex with the general knowledge and skills of other models, along with extra speed and improvements in the Codex harness, so that it can now handle your full stack agentic needs. We also got the Codex app for Mac, which is getting positive reactions, and quickly picked up a million downloads. CPT-5.3-Codex is only available inside Codex. It is not in

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74:03

“Claude Opus 4.6 Escalates Things Quickly” by Zvi

LessWrong posts by zvi ·

2026/02/11

Life comes at you increasingly fast. Two months after Claude Opus 4.5 we get a substantial upgrade in Claude Opus 4.6. The same day, we got GPT-5.3-Codex.That used to be something we’d call remarkably fast. It's probably the new normal, until things get even faster than that. Welcome to recursive self-improvement. Before those releases, I was using Claude Opus 4.5 and Claude Code for essentially everything interesting, and only using GPT-5.2 and Gemini to fill in the gaps or for

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55:33

“Claude Opus 4.6: System Card Part 1: Mundane...

LessWrong posts by zvi ·

2026/02/09

Claude Opus 4.6 is here. It was built with and mostly evaluated by Claude. Their headline pitch includes: 1M token context window (in beta) with State of the art retrieval performance. Improved abilities on a range of everyday work tasks. Model is improved. State of the art on some evaluations, including Terminal-Bench 2.0, HLE and a very strong lead in GDPval-AA. Claude Code now has an experimental feature called Agent Teams. Claude Code with Opus 4.6 has a new fast (but actually

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45:59

“Claude Code #4: From The Before Times” by Zvi

LessWrong posts by zvi ·

2026/02/09

Claude Opus 4.6 and agent swarms were announced yesterday. That's some big upgrades for Claude Code. OpenAI, the competition, offered us GPT-5.3-Codex, and this week gave us an app form of Codex that already has a million active users. That's all very exciting, and next week is going to be about covering that. This post is about all the cool things that happened before that, which we will be building upon now that capabilities have further advanced. This if from Before Times. Almost all of it

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22:12

“Kimi K2.5” by Zvi

LessWrong posts by zvi ·

2026/02/04

I had to delay this a little bit, but the results are in and Kimi K2.5 is pretty good.Table of Contents Official Introduction. On Your Marks. Positive Reactions. Skeptical Reactions. Kimi Product Accounts. Agent Swarm. Who Are You? Export Controls Are Working. Where Are You Going? Safety Not Even Third. It's A Good Model, Sir. Official Introduction Introducing Kimi K2.5, Kimi.ai: Meet Kimi K2.5, Open-Source Visual Agentic Intelligence. Global SOTA on Agentic Benchmarks:

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57:02

“Welcome to Moltbook” by Zvi

LessWrong posts by zvi ·

2026/02/02

Moltbook is a public social network for AI agents modeled after Reddit. It was named after a new agent framework that was briefly called Moltbot, was originally Clawdbot and is now OpenClaw. I’ll double back to cover the framework soon.Scott Alexander wrote two extended tours of things going on there. If you want a tour of ‘what types of things you can see in Moltbook’ this is the place to go, I don’t want to be duplicative so a lot of what he covers won’t be covered here. At least briefly

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54:19

“On The Adolescence of Technology” by Zvi

LessWrong posts by zvi ·

2026/01/30

Anthropic CEO Dario Amodei is back with another extended essay, The Adolescence of Technology.This is the follow up to his previous essay Machines of Loving Grace. In MoLG, Dario talked about some of the upsides of AI. Here he talks about the dangers, and the need to minimize them while maximizing the benefits. In many aspects this was a good essay. Overall it is a mild positive update on Anthropic. It was entirely consistent with his previous statements and work. I believe the target is

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81:02

“AI #153: Living Documents” by Zvi

LessWrong posts by zvi ·

2026/01/29

This was Anthropic Vision week where at DWATV, which caused things to fall a bit behind on other fronts even within AI. Several topics are getting pushed forward, as the Christmas lull appears to be over.Upcoming schedule: Friday will cover Dario's essay The Adolescence of Technology. Monday will cover Kimi K2.5, which is potentially a big deal. Tuesday is scheduled to be Claude Code #4. I’ve also pushed discussions of the question of the automation of AI R&D, or When AI Builds AI, to a

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29:18

“Dating Roundup #11: Going Too Meta” by Zvi

LessWrong posts by zvi ·

2026/01/23

If there's several things this blog endorses, one of them would be going meta. It's time. The big picture awaits. You’re Single Because You Live In The Wrong Place The most important meta question is location, location, location. This is the periodic reminder that dating dynamics are very different in different locations, and gender ratios are far more uneven than they appear because a lot of people pair off and aren’t in the pool. If you are a man seeking to date women, New York City is

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30:00

“Claude Codes #3” by Zvi

LessWrong posts by zvi ·

2026/01/21

We’re back with all the Claude that's fit to Code. I continue to have great fun with it and find useful upgrades, but the biggest reminder is that you need the art to have an end other than itself. Don’t spend too long improving your setup, or especially improving how you improve your setup, without actually working on useful things.The Efficient Market Hypothesis Odd Lots covered Claude Code. Fun episode, but won’t teach my regular readers much that is new. Bradly Olsen at the Wall Street

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21:43

“Medical Roundup #6” by Zvi

LessWrong posts by zvi ·

2026/01/19

The main thing to know this time around is that the whole crazy ‘what is causing the rise in autism?’ debacle is over actual nothing. There is no rise in autism. There is only a rise in the diagnosis of autism. Table of Contents Autism Speaks. Exercise Is Awesome. That's Peanuts. An Age Of Wonders. GLP-1s In Particular. The Superheroes. The Supervillains. FDA Delenda Est. Hansonian Medicine. Hospital Strategy 101. Mental Hospital Strategy 101. Drugs Are Bad, Mmmkay?

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47:41

“Monthly Roundup #38: January 2026” by Zvi

LessWrong posts by zvi ·

2026/01/16

Good news, we managed to make some cuts. I think?Table of Contents California In Crisis. Bad News. Opportunity Knocks. Government Working. The Efficient Market Hypothesis Has Thoughts. No All That Money Doesn’t Go To Pay Interest. While I Cannot Condone This. Burnout. Good News, Everyone. Good Advice. For Your Entertainment. Gamers Gonna Game Game Game Game Game. Sports Go Sports. Antisocial Media. California In Crisis I’ve written about this before, but it turns out

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61:00

“AI #151: While Claude Coworks” by Zvi

LessWrong posts by zvi ·

2026/01/15

Claude Code and Cowork are growing so much that it is overwhelming Anthropic's servers. Claude Code and Cowork news has for weeks now been a large portion of newsworthy items about AI.Thus, at least for now, all things Claude Code and Cowork will stop appearing in the weekly updates, and will get their own updates, which might even be weekly. Google offered us the new Universal Commerce Protocol, and gives us its take on Personalized Intelligence. Personalized Intelligence could be a huge deal

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15:00

“When Will They Take Our Jobs?” by Zvi

LessWrong posts by zvi ·

2026/01/14

And once they take our jobs, will we be able to find new ones? Will AI take those too?Seb Krier recently wrote an unusually good take on that, which will center this post. I believe that Seb is being too optimistic on several fronts, but in a considered and highly reasonable way. The key is to understand the assumptions being made, and also to understand that he is only predicting that the era of employment optimism will last for 10-20 years. By contrast, there are others that expect human

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21:55

“Claude Coworks” by Zvi

LessWrong posts by zvi ·

2026/01/13

Claude Code does a lot more than code, but the name and command line scare people. Anthropic realized a rebrand was in order. Two weeks later, we have Claude Cowork, written entirely by Claude Code. Did you know that chat interfaces were always (mostly) secretly a command line? This is still very much a research preview, available only for Claude Max users on Macs with a bunch of bugs and missing features. It will improve rapidly over time. Cowork combines a lot of the power of Claude Code with

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27:10

“Dating Roundup #10: Gendered Expectations” by Zvi

LessWrong posts by zvi ·

2026/01/12

The game is asymmetrical. Life is not fair. Doesn’t matter. Play to win the game. You’re Single Because Your Emotions Gave Her The Ick Ah, the ultimate ick source. A man expressing their emotions is kind of the inverse of the speech in Barbie about how it's impossible to be a woman. It's easy. A man must be in touch with and transparent about his emotions, but must also be in conscious control over them, without repressing them, while choosing strategically when to be and not be transparent

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38:09

“Claude Codes” by Zvi

LessWrong posts by zvi ·

2026/01/09

Claude Code with Opus 4.5 is so hot right now. The cool kids use it for everything.They definitely use it for coding, often letting it write all of their code. They also increasingly use it for everything else one can do with a computer. Vas suggests using Claude Code as you would a mini-you/employee that lives in your computer and can do literally anything. There's this thread of people saying Claude Code with Opus 4.5 is AGI in various senses. I centrally don’t agree, but they definitely

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36:27

“AI #150: While Claude Codes” by Zvi

LessWrong posts by zvi ·

2026/01/08

Claude Code is the talk of the town, and of the Twitter. It has reached critical mass.Suddenly, everyone is talking about how it is transforming their workflows. This includes non-coding workflows, as it can handle anything a computer can do. People are realizing the power of what it can do, building extensions and tools, configuring their setups, and watching their worlds change. I’ll be covering that on its own soon. This covers everything else, including ChatGPT Health and the new rounds from

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35:10

“Advancements In Self-Driving Cars” by Zvi

LessWrong posts by zvi ·

2026/01/07

Going Full San Francisco Waymo goes Full San Francisco West Bay except for SFO: Jeff Dean: Exciting expansion! @Waymo now serves the whole SF Bay Area Peninsula from SF to San Jose and is taking riders on freeways. They can serve SJC, and SFO is almost ready, employee rides are in place and public rides are ‘coming soon.’ Brandan: Would be nice if @Waymo comes across the bay to Berkeley! Jeff Dean: We’ll cross that bridge when we come to it! Going Down The Highway Waymo is

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50:33

“Fertility Roundup #6: The Art of More Dakka” by Zvi

LessWrong posts by zvi ·

2026/01/06

The central message of the fertility roundups has always been that we have a choice.If we do want to raise fertility, we can do that. People respond to incentives. That means money, especially if paid up front, and it also means time, lifestyle and respect. If we do it purely with cash, it would be expensive, but a well-designed version of this would still be net profitable to the state. On the order of $300k per additional live birth would get this done in the United States, depending on how

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