Alex Albert(@alexalbert__)

For reference, Haiku 4.5 came out on October 15th, 2025 so these two columns are less than a year ap...

Alex Albert (@alexalbert__) — Wed, 07 Oct 2026 19:15:42 GMT

For reference, Haiku 4.5 came out on October 15th, 2025 so these two columns are less than a year apart. 

and oh yeah Haiku 5.5 is also much faster and 75% cheaper...

Claude@claudeai

Haiku 5.5 is a significant step up over Haiku 4.5 across coding, computer use, and knowledge work.

💬86🔄20❤️478👀26056📊93

Sonnet 5.5 has the same feel I liked about Opus 5.5. It writes clearly, it's very fast, and it's a m...

Alex Albert (@alexalbert__) — Mon, 28 Sep 2026 18:06:47 GMT

Sonnet 5.5 has the same feel I liked about Opus 5.5. It writes clearly, it's very fast, and it's a major capabilities jump over Sonnet 5. Really great model to iterate with.

Claude@claudeai

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.

Your browser does not support the video tag.

💬83🔄15❤️849👀45190📊116

Prompt in Claude Tag "Recreate Market Street, San Francisco as it stood on April 17, 1906, the afte...

Alex Albert (@alexalbert__) — Tue, 22 Sep 2026 18:34:16 GMT

Prompt in Claude Tag

"Recreate Market Street, San Francisco as it stood on April 17, 1906, the afternoon before the earthquake, in Blender.

Scope: the Ferry Building up Market to Fifth Street, including the Palace Hotel, the Call Building, the Chronicle Building, Lotta's Fountain and the Emporium.

Before modeling anything, build a source file from: the 1899-1905 Sanborn fire insurance maps (footprints, heights, materials, occupants), the Miles Brothers film "A Trip Down Market Street" (April 1906), period photographs from OpenSFHistory, the Library of Congress and the David Rumsey collection, and USGS topography. Record every building with footprint, height, facade material, occupant, and the source for each fact with a confidence level.

Build everything in Blender Python. No downloaded meshes, textures or HDRIs. Write reusable generators (Victorian commercial facade, mansard roof, bay windows, awnings, painted signage, gas and electric street lamps, cable car, horse-drawn wagon, early automobile) and assemble the street from the source file, so every building traces back to data.

Provide a 10 second video up the street."

💬10🔄4❤️105👀14298📊38

I've been on a Blender kick with Opus 5.5. Its better 3D modeling and vision mean you can build an e...

Alex Albert (@alexalbert__) — Tue, 22 Sep 2026 18:34:15 GMT

I've been on a Blender kick with Opus 5.5. Its better 3D modeling and vision mean you can build an entire world from a single prompt.

Historically accurate San Francisco Market street in 1906, pre-earthquake

Your browser does not support the video tag.

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need to make sure you've been updated to this (rolling out to everyone soon if you haven't!) https:/...

Alex Albert (@alexalbert__) — Tue, 22 Sep 2026 18:01:47 GMT

need to make sure you've been updated to this (rolling out to everyone soon if you haven't!) x.com/claudeai/statu…

Claude@claudeai

Claude Cowork and chat are merging into one Claude.

Ask a quick question or hand over a report, and Claude takes it from there, even after you close your laptop. If something's unclear, Claude asks—you keep the final say.

Rolling out to Pro and Max over the next few weeks.

Your browser does not support the video tag.

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I just realized Opus 5.5 can use Blender to make claymations with just a single prompt in claude dot...

Alex Albert (@alexalbert__) — Tue, 22 Sep 2026 18:01:46 GMT

I just realized Opus 5.5 can use Blender to make claymations with just a single prompt in claude dot ai now

Your browser does not support the video tag.

💬107🔄109❤️2640👀268444📊588

Lots more coming soon. Today is just the start!

Alex Albert (@alexalbert__) — Tue, 22 Sep 2026 17:04:43 GMT

Lots more coming soon. Today is just the start!

Mike Krieger@mikeyk

We’re also launching Claude Sonnet 5.5 and Haiku 5.5 in the coming weeks. These models will come with many of the same improvements to performance, efficiency, and safety.

With that, happy building everyone.

💬30🔄23❤️1243👀85273📊114

Using Opus 5.5 feels like hitting every green light on your drive home, drinking a cold glass of wat...

Alex Albert (@alexalbert__) — Tue, 22 Sep 2026 16:39:59 GMT

Using Opus 5.5 feels like hitting every green light on your drive home, drinking a cold glass of water when you're thirsty, and a hot shower after a long day.

It's super smart, it writes clearly, it's fast, and it costs way less. It's a very good model.

Claude@claudeai

Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family.

It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.

Your browser does not support the video tag.

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The team did an amazing job with this merge. The resulting UX feels so much better than chat or Cowo...

Alex Albert (@alexalbert__) — Wed, 16 Sep 2026 18:48:24 GMT

The team did an amazing job with this merge. The resulting UX feels so much better than chat or Cowork did on their own.

And the new slides/docs/design integrations work very well.

Claude@claudeai

Claude Cowork and chat are merging into one Claude.

Ask a quick question or hand over a report, and Claude takes it from there, even after you close your laptop. If something's unclear, Claude asks—you keep the final say.

Rolling out to Pro and Max over the next few weeks.

Your browser does not support the video tag.

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Worth spending a few minutes this weekend to read this essay in full. Embedded evaluators might so...

Alex Albert (@alexalbert__) — Sat, 12 Sep 2026 16:41:47 GMT

Worth spending a few minutes this weekend to read this essay in full. 

Embedded evaluators might sound unusual in tech but it's pretty normal in other industries. Big banks have federal examiners with desks in the building and every nuclear plant in the US has inspectors who work on site full time. I think frontier AI labs should work the same way and this is a very practical first step.

Dario Amodei@DarioAmodei

We Must Pace the Frontier: I’ve written a new essay on why the AI industry should slow down, with a three-part plan for doing so.

Anthropic is unilaterally committing to the first of these steps. We’ll provide third-party evaluators with permanent, employee-level access to our systems, so that they can verify adherence to our safety measures, report on incidents, and assess models’ alignment during training.

You can read the full post here: darioamodei.com/post/we-must-p…

💬57🔄8❤️188👀28400📊56

One non-model thing I'm very excited we announced today with Fable 5.1 is Enterprise Frontier Safegu...

Alex Albert (@alexalbert__) — Tue, 01 Sep 2026 20:45:01 GMT

One non-model thing I'm very excited we announced today with Fable 5.1 is Enterprise Frontier Safeguards (EFS).

Even if you're not a CEO/CISO, this blog post is a look into how big companies are thinking about AI adoption which is important to understand if you're interested in how AI might diffuse across industry.

Companies are giving agents more and more access to internal systems. With traditional zero data retention, there's been no way to spot patterns in what agents might be doing across sessions on these systems.

EFS is ZDR++. It's ZDR built for a world with agents. A company's data stays in its own cloud, and an automated monitoring layer we built flags risky patterns to its team.

I think of this as an observability and risk mitigation layer for agents. My guess is it will become a standard requirement from enterprises for running increasingly powerful AI on their systems.

Claude@claudeai

We’re also introducing Enterprise Frontier Safeguards (EFS), which give enterprise customers complete privacy (the same as zero data retention), while still being state-of-the-art at preventing adversarial use. EFS rolls out in phases, starting this fall. anthropic.com/news/enterpris…

💬43🔄17❤️281👀59607📊59

Fable 5.1 is a beast at many things but one thing in particular I have been having a ton of fun with...

Alex Albert (@alexalbert__) — Tue, 01 Sep 2026 18:49:24 GMT

Fable 5.1 is a beast at many things but one thing in particular I have been having a ton of fun with is generating videos through code. 

For this one I gave it a picture of a property lot. It designed a house for the lot, rendered it, and produced a cinematic walkthrough.

Your browser does not support the video tag.

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using blender headless btw

Alex Albert (@alexalbert__) — Tue, 01 Sep 2026 18:49:24 GMT

using blender headless btw

💬34🔄17❤️999👀68867📊161

...it's also the reason I have been pretty offline here the past few weeks😅

Alex Albert (@alexalbert__) — Tue, 01 Sep 2026 18:10:16 GMT

...it's also the reason I have been pretty offline here the past few weeks😅

💬5🔄0❤️53👀7036📊9

The way I keep describing Fable 5.1 to people is that it just works. I explain what I want in a few...

Alex Albert (@alexalbert__) — Tue, 01 Sep 2026 18:08:45 GMT

The way I keep describing Fable 5.1 to people is that it just works.

I explain what I want in a few vague, messy sentences, and it figures out the rest. It fills in the gaps the way I would have. It's a truly impressive model in so many ways and I hope you enjoy using it!

Claude@claudeai

We’re introducing Claude Fable 5.1 and Claude Mythos 5.1.

They're the world’s most advanced models for coding and knowledge work.

Your browser does not support the video tag.

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Just over 6 months later, Opus 5 now produces near-superhuman level spreadsheets and slide decks tha...

Alex Albert (@alexalbert__) — Fri, 24 Jul 2026 19:08:56 GMT

Just over 6 months later, Opus 5 now produces near-superhuman level spreadsheets and slide decks that match what a consultant would make. Things are changing fast.

Your browser does not support the video tag.

Alex Albert@alexalbert__

I'm hearing from many folks across finance industry that Claude for Excel is blowing their minds.

The agentic coding takeoff but for other fields is coming in 2026.

💬114🔄204❤️3794👀739191📊591

Some of my favorite graphs from Opus 5 launch. We put a ton of work into making this model token eff...

Alex Albert (@alexalbert__) — Fri, 24 Jul 2026 17:14:15 GMT

Some of my favorite graphs from Opus 5 launch. We put a ton of work into making this model token efficient across domains while still raising the intelligence bar. 

It feels very smooth to use and I prefer it over Fable 5 for  many coding tasks.

💬52🔄36❤️695👀61884📊120

Welcome to the world, Opus 5.

Alex Albert (@alexalbert__) — Fri, 24 Jul 2026 17:09:49 GMT

Welcome to the world, Opus 5.

Claude@claudeai

Introducing Claude Opus 5.

It's a thoughtful and proactive model that comes close to the frontier intelligence of Fable 5 at half the price.

Your browser does not support the video tag.

💬20🔄5❤️310👀22242📊35

More Fable!

Alex Albert (@alexalbert__) — Thu, 09 Jul 2026 18:25:48 GMT

More Fable!

ClaudeDevs@ClaudeDevs

We've reset 5-hour and weekly rate limits for all users.

💬46🔄8❤️677👀50602📊76

Welcome back to the world Fable!!

Alex Albert (@alexalbert__) — Wed, 01 Jul 2026 19:39:22 GMT

Welcome back to the world Fable!!

Claude@claudeai

Fable 5 is back.

Your browser does not support the video tag.

💬31🔄10❤️589👀50431📊62

This has completely changed how I work with Claude. It feels less like using a tool and more like ma...

Alex Albert (@alexalbert__) — Tue, 23 Jun 2026 17:19:24 GMT

This has completely changed how I work with Claude. It feels less like using a tool and more like managing a team.

Claude@claudeai

Introducing Claude Tag, a new way for teams to work with Claude.

In Slack, Claude joins as a team member with access to the channels and tools you choose. Tag Claude in and delegate tasks to it while you focus on other work.

Your browser does not support the video tag.

💬45🔄14❤️558👀138635📊90

Pulled this from our prompting guide which has many more tips for working with Fable: https://t.co/x...

Alex Albert (@alexalbert__) — Fri, 12 Jun 2026 17:55:38 GMT

Pulled this from our prompting guide which has many more tips for working with Fable: platform.claude.com/docs/en/build-…

💬8🔄6❤️103👀11006📊35

Fable feels superhuman at working over long agentic conversations, sometimes to the point where I ca...

Alex Albert (@alexalbert__) — Fri, 12 Jun 2026 17:55:35 GMT

Fable feels superhuman at working over long agentic conversations, sometimes to the point where I can't keep up with what it's telling me 😅

This prompt snippet has been the best fix I've found for getting it to write clearly and drop any jargon:

💬77🔄30❤️1031👀69373📊305

We've reset usage limits across our products! For those just starting to test Fable, here's four t...

Alex Albert (@alexalbert__) — Tue, 09 Jun 2026 22:00:20 GMT

We've reset usage limits across our products! 

For those just starting to test Fable, here's four tips for using it more effectively:
1. Give it bigger, more ambitious tasks than what previous models could handle.
2. Use xhigh/high effort as your default for best performance, med for faster interactive sessions.
3. Rework your skills and CLAUDE.mds. Instructions written for prior models anchor Fable to stale patterns, let it use its own judgment first.
4. Move from providing tasks to providing objectives. Describe what done looks like and how to verify it, then let Fable find the path (/loop and /goal are built for this)

Amol Avasare@TheAmolAvasare

To celebrate the Fable 5 launch, we just reset 5-hour and weekly limits for all users across our products!

Enjoy 🚀

💬147🔄167❤️2938👀388960📊541

I've been at Anthropic through every model launch. There's been a few cases I can remember of a laun...

Alex Albert (@alexalbert__) — Tue, 09 Jun 2026 17:09:16 GMT

I've been at Anthropic through every model launch. There's been a few cases I can remember of a launch that stands out and marks a step-change in how we use models:
- Claude Opus 3
- Claude Sonnet 3.5
- Claude Opus 4.5

And now Claude Fable 5.

With Fable, the model stopped feeling like a tool I direct and started feeling more like something I collaborate with.

Claude@claudeai

Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use.

Its capabilities exceed those of any model we’ve ever made generally available.

Your browser does not support the video tag.

💬191🔄128❤️3249👀610001📊435

We just published internal data on how much of Claude's development is already being done by Claude:...

Alex Albert (@alexalbert__) — Thu, 04 Jun 2026 17:01:43 GMT

We just published internal data on how much of Claude's development is already being done by Claude:
- Over 80% of all code merged into our codebase is now written by Claude
- It's been months since many researchers at Anthropic hand-wrote code
- The typical Anthropic engineer ships 8x as much code as they did in 2024
- On the most open-ended engineering tasks, Claude's success rate jumped from ~26% to 76% in 6 months
- When research sessions went off-track, Claude proposed a better next step than the human took 64% of the time

We're not at recursive self-improvement yet, but it could come sooner than most expect. I highly recommend reading the full blog post.

Anthropic@AnthropicAI

Our internal data shows Claude is accelerating AI development—a possible path to recursive self-improvement, or AI autonomously building a more capable successor.

It’s happening faster than we thought, and the implications deserve greater attention. anthropic.com/institute/recu…

💬189🔄210❤️3250👀422774📊482

We put a lot of work into calibrating thinking effort for Opus 4.8. As you're trying out the model...

Alex Albert (@alexalbert__) — Thu, 28 May 2026 17:35:07 GMT

We put a lot of work into calibrating thinking effort for Opus 4.8. 

As you're trying out the model, if you do run into any examples of it still over/under thinking, please flag it to us!

kipply@kipperrii

hello beloved tasteful users, do you like how much claude thinks on your tasks? would love examples of it thinking too much or too little

💬51🔄10❤️432👀40084📊66

Fast mode for Opus 4.8 is much more affordable now. Try it out in Claude Code, I've found it chang...

Alex Albert (@alexalbert__) — Thu, 28 May 2026 17:13:30 GMT

Fast mode for Opus 4.8 is much more affordable now. 

Try it out in Claude Code, I've found it changes how I use Claude. Fast mode for interactive work where I want rapid responses, normal mode for longer async tasks where I don't need results right away.

Claude@claudeai

Fast mode is available for Opus 4.8. It's the same model at roughly 2.5x the speed, and we've made it three times cheaper than before.

Turn it on with /fast in Claude Code. On the API, contact your account manager to request access or join the waitlist: claude.com/fast-mode

💬46🔄11❤️457👀41529📊66

Excited to release Opus 4.8 today! We heard your feedback on 4.7 and have made many fixes for 4.8. ...

Alex Albert (@alexalbert__) — Thu, 28 May 2026 16:59:06 GMT

Excited to release Opus 4.8 today! We heard your feedback on 4.7 and have made many fixes for 4.8.

4.8 understands nuances better, feels much more natural to talk to, and is overall a stronger collaborator on everything from coding to knowledge work.

Claude@claudeai

Introducing Claude Opus 4.8: it builds on Opus 4.7 with sharper judgment, more honesty about its own progress, and the ability to work independently for longer than its predecessors.

Available today at the same price.

💬170🔄91❤️2090👀196516📊283

https://t.co/gFJTxykMTf

Alex Albert (@alexalbert__) — Wed, 13 May 2026 17:21:46 GMT

support.claude.com/en/articles/15…

💬2🔄0❤️34👀14069📊6

Starting June 15, paid Claude plans include a monthly Claude Agent SDK credit. It covers usage on ...

Alex Albert (@alexalbert__) — Wed, 13 May 2026 17:21:46 GMT

Starting June 15, paid Claude plans include a monthly Claude Agent SDK credit. 

It covers usage on your own scripts and agents, claude -p, and third-party apps built on the SDK (OpenClaw, Conductor, etc) and it's separate from your regular usage limits.

ClaudeDevs@ClaudeDevs

Monthly credit amounts vary by plan:

Pro: $20
Max 5x: $100
Max 20x: $200
Team Standard: $20/seat
Team Premium: $100/seat
Enterprise: Varies by seat type

After you claim the credit, it resets with each billing cycle. Credits do not rollover.

💬117🔄18❤️856👀206903📊163

An early Claude Mythos Preview snapshot we provided METR has a time horizon of more than 2x the next...

Alex Albert (@alexalbert__) — Fri, 08 May 2026 23:54:03 GMT

An early Claude Mythos Preview snapshot we provided METR has a time horizon of more than 2x the next best model on their 80% success rate benchmark

METR@METR_Evals

We evaluated an early version of Claude Mythos Preview for risk assessment during a limited window in March 2026. We estimated a 50%-time-horizon of at least 16hrs (95% CI 8.5hrs to 55hrs) on our task suite, at the upper end of what we can measure without new tasks.

💬99🔄106❤️1488👀397254📊232

Pulled from this great blog post: https://t.co/Wbjm1ADwcp

Alex Albert (@alexalbert__) — Thu, 07 May 2026 19:20:16 GMT

Pulled from this great blog post: hacks.mozilla.org/2026/05/behind…

💬3🔄11❤️284👀60524📊54

With the help of Claude Mythos Preview, the Firefox team fixed more security bugs in April than in t...

Alex Albert (@alexalbert__) — Thu, 07 May 2026 19:20:15 GMT

With the help of Claude Mythos Preview, the Firefox team fixed more security bugs in April than in the past 15 months combined.

💬344🔄1257❤️15477👀1487332📊2219

I'll be at Code with Claude all day today so come find me and let's chat about Claude! I'll also be...

Alex Albert (@alexalbert__) — Wed, 06 May 2026 16:44:35 GMT

I'll be at Code with Claude all day today so come find me and let's chat about Claude!

I'll also be giving a talk on the main stage at 530pm PT so tune in, it will be on the livestream!

ClaudeDevs@ClaudeDevs

Code with Claude is happening now!

▪︎ 9:00AM - Keynote 
▪︎ 10:30AM -  What's new in Claude Code
▪︎ 11:15AM - Building on Claude at GitHub scale
▪︎ 12:00PM - Get to production faster with Managed Agents 

All times PT.  x.com/i/broadcasts/1…

💬15🔄2❤️144👀15944📊21

More chips, more Claude

Alex Albert (@alexalbert__) — Wed, 06 May 2026 16:40:23 GMT

More chips, more Claude

Claude@claudeai

Effective today, we are:

1) Doubling Claude Code’s 5-hour rate limits for Pro, Max, and Team plans;

2) Removing the peak hours limit reduction on Claude Code for Pro and Max plans; and

3) Substantially raising our API rate limits for Opus models.

💬66🔄18❤️947👀47983📊110

Jack's young money blog had a big impact on me when I was in college and navigating what I wanted to...

Alex Albert (@alexalbert__) — Mon, 20 Apr 2026 17:19:14 GMT

Jack's young money blog had a big impact on me when I was in college and navigating what I wanted to do post-grad. 

If you are in your teens/20s and trying to figure out how to think about life, this book will offer you some good ideas.

Jack Raines@Jack_Raines

Some news: I wrote a book!

For the last few years, I've obsessed over the idea of "opportunity costs," particularly with how to make the most of each stage of life before it's gone. From that obsession came Young Money. Pre-order here (and more below):

penguinrandomhouse.com/books/786678/y…

💬10🔄5❤️172👀45768📊31

Everyone with a vision can produce very high-quality designs now (with a lil help from Claude)

Alex Albert (@alexalbert__) — Fri, 17 Apr 2026 15:40:58 GMT

Everyone with a vision can produce very high-quality designs now (with a lil help from Claude)

Claude@claudeai

Introducing Claude Design by Anthropic Labs: make prototypes, slides, and one-pagers by talking to Claude.

Powered by Claude Opus 4.7, our most capable vision model. Available in research preview on the Pro, Max, Team, and Enterprise plans, rolling out throughout the day.

Your browser does not support the video tag.

💬52🔄16❤️601👀42059📊84

A lot of bugs that folks may have hit yesterday when first trying Opus 4.7 are now fixed. Thanks for...

Alex Albert (@alexalbert__) — Fri, 17 Apr 2026 15:14:47 GMT

A lot of bugs that folks may have hit yesterday when first trying Opus 4.7 are now fixed. Thanks for bearing with us🙏

Ethan Mollick@emollick

I'll give Anthropic credit for moving quickly. Opus 4.7 Adaptive Thinking now triggers thinking much more often, including for the tasks it failed at yesterday. That also means it is doing a lot more web search.

So far, a large improvement in output quality on non-coding tasks.

💬101🔄43❤️1200👀102954📊163

Some of my favorite things in Opus 4.7: - Very good at async work and following instructions - Effor...

Alex Albert (@alexalbert__) — Thu, 16 Apr 2026 14:44:02 GMT

Some of my favorite things in Opus 4.7:
- Very good at async work and following instructions
- Effort levels are far more predictable for token control (+ new xhigh level)
- No more downscaling of high-res images
- Noticeably more taste in UIs, slides, docs

Claude@claudeai

Introducing Claude Opus 4.7, our most capable Opus model yet.

It handles long-running tasks with more rigor, follows instructions more precisely, and verifies its own outputs before reporting back.

You can hand off your hardest work with less supervision.

💬107🔄32❤️883👀88847📊143

New version of Claude Code in the desktop app dropped today with tons of new features and performanc...

Alex Albert (@alexalbert__) — Tue, 14 Apr 2026 20:01:44 GMT

New version of Claude Code in the desktop app dropped today with tons of new features and performance improvements. 

Between Cowork and Code, I've found I don't really need to open other apps (or even my terminal) to do most of my work now.

Claude@claudeai

We've redesigned Claude Code on desktop.

You can now run multiple Claude sessions side by side from one window, with a new sidebar to manage them all.

Your browser does not support the video tag.

💬101🔄33❤️911👀103874📊148

Allowing Sonnet to "phone a friend" (i.e. call Opus) increases performance while also reducing total...

Alex Albert (@alexalbert__) — Thu, 09 Apr 2026 19:49:48 GMT

Allowing Sonnet to "phone a friend" (i.e. call Opus) increases performance while also reducing total cost since it reduces tokens spent trying to solve more complex tasks

Claude@claudeai

We're bringing the advisor strategy to the Claude Platform.

Pair Opus as an advisor with Sonnet or Haiku as an executor, and get near Opus-level intelligence in your agents at a fraction of the cost.

💬134🔄98❤️2882👀270521📊380

I've found Managed Agents to somehow be both the fastest way to hack together a weekend agent projec...

Alex Albert (@alexalbert__) — Wed, 08 Apr 2026 18:10:18 GMT

I've found Managed Agents to somehow be both the fastest way to hack together a weekend agent project and the most robust way to ship one to millions of users.

It eliminates all the complexity of self-hosting an agent but still allows a great degree of flexibility with setting up your harness, tools, skills, etc.

Claude@claudeai

Introducing Claude Managed Agents: everything you need to build and deploy agents at scale.

It pairs an agent harness tuned for performance with production infrastructure, so you can go from prototype to launch in days.

Now in public beta on the Claude Platform.

Your browser does not support the video tag.

💬82🔄41❤️984👀145359📊198

Mythos Preview is currently available to our launch partners in Project Glasswing. Learn more about ...

Alex Albert (@alexalbert__) — Tue, 07 Apr 2026 18:12:45 GMT

Mythos Preview is currently available to our launch partners in Project Glasswing. Learn more about the model and the project here: anthropic.com/glasswing

💬63🔄77❤️1593👀376753📊295

We released Claude Opus 4.6 just two months ago. Today we're sharing some info on our new model, Cla...

Alex Albert (@alexalbert__) — Tue, 07 Apr 2026 18:12:42 GMT

We released Claude Opus 4.6 just two months ago. Today we're sharing some info on our new model, Claude Mythos Preview.

💬836🔄1215❤️17565👀3016457📊3117

Glasswing is possibly the most consequential event in the AI industry I've seen up close since joini...

Alex Albert (@alexalbert__) — Tue, 07 Apr 2026 18:07:57 GMT

Glasswing is possibly the most consequential event in the AI industry I've seen up close since joining Anthropic almost 3 years ago. It feels like we're at a turning point in history.

Anthropic@AnthropicAI

Introducing Project Glasswing: an urgent initiative to help secure the world’s most critical software.

It’s powered by our newest frontier model, Claude Mythos Preview, which can find software vulnerabilities better than all but the most skilled humans.
anthropic.com/glasswing

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Goodbye --dangerously-skip-permissions, hello auto mode

Alex Albert (@alexalbert__) — Tue, 24 Mar 2026 18:27:24 GMT

Goodbye --dangerously-skip-permissions, hello auto mode

Claude@claudeai

New in Claude Code: auto mode.

Instead of approving every file write and bash command, or skipping permissions entirely, auto mode lets Claude make permission decisions on your behalf.

Safeguards check each action before it runs.

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Highly recommend reading this guest post by theoretical physicist Matthew Schwartz to get a sense of...

Alex Albert (@alexalbert__) — Tue, 24 Mar 2026 00:05:48 GMT

Highly recommend reading this guest post by theoretical physicist Matthew Schwartz to get a sense of how AI is helping science.

He found Opus 4.5 to be roughly the level of a second-year grad student and it helped him accelerate his research by 10x.

Anthropic@AnthropicAI

We’re launching with two new posts.

Can AI do theoretical physics? 

Harvard physicist Matthew Schwartz led Claude Opus 4.5 through a graduate-level calculation. AI can’t yet do original work autonomously, but it can vastly accelerate it. 

Read more: anthropic.com/research/vibe-…

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The future where I never have to open up my laptop to get work done is becoming real very fast

Alex Albert (@alexalbert__) — Mon, 23 Mar 2026 23:42:52 GMT

The future where I never have to open up my laptop to get work done is becoming real very fast

Claude@claudeai

You can now enable Claude to use your computer to complete tasks.

It opens your apps, navigates your browser, fills in spreadsheets—anything you'd do sitting at your desk.

Research preview in Claude Cowork and Claude Code, macOS only.

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