Anthropic

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. https://t.co/8P9PSrWPi3

Last month we launched Project Glasswing, our collaborative AI cybersecurity initiative. Since then, we and our partners have found more than ten thousand high- or critical-severity vulnerabilities in essential software.

AI is advancing at a pace our policymaking institutions were never built for—and the gap between the two is becoming the central challenge of the technology. In his latest essay, our CEO Dario Amodei lays out how to close it. We're launching three new initiatives to support the https://t.co/8KguMgV4dP

We’re launching Claude Corps, a national fellowship program matching people early in their careers with US nonprofits. We'll teach 1,000 people to use Claude, and pay them to use AI to advance their hosts’ missions. https://t.co/QI6JmlAdSr

Today, we're introducing Claude Fable 5 and Mythos 5, two configurations of our next major language model. I'd normally highlight the numbers: It's SOTA on nearly all benchmarks. I want to talk about something else, because with Fable 5 out in the world, I think a third era

📣 Claude Fable 5, the first in @AnthropicAI's Mythos model class, is now generally available and rolling out in GitHub Copilot. It is designed for long-horizon, autonomous coding and knowledge-work tasks. Try it out in @code or the GitHub Copilot app. ⬇️ https://t.co/jJTqh35jjY https://t.co/tM3L1znxV2

Today we're introducing Claude for Hardware. Just enter your hardware idea and Blueprint gives you an entire hardware plan for your build. What becomes possible now is insane. https://t.co/HCvFFdGnun

🆕 @AnthropicAI's Claude Opus 4.8 is now generally available and rolling out in GitHub Copilot. Early testing shows: • It demonstrates a clear step forward in code understanding and generation across a range of real-world coding tasks. • It handles complex problem-solving and https://t.co/dMkLFeEtNp

Since launching our AI for Science program, we’ve been working with scientists to understand how AI is accelerating progress. We spoke with 3 labs where Claude is reshaping research—and starting to point towards novel scientific insights and discoveries. https://t.co/WAvghBlbsC

We’re donating Petri, our open-source alignment tool, to @meridianlabs_ai, so its development can continue independently. Working with Meridian Labs, we’ve also released a major update that improves the adaptability, realism, and depth of Petri’s tests. https://t.co/CyicsIScJi

And tomorrow, we’ll launch a $150 million national fellowship program designed to help people early in their careers extend the benefits of AI to communities across America.

🏎️ Fast mode for @AnthropicAI’s Claude Opus 4.6 is rolling out in research preview on GitHub Copilot. Get 2.5x faster token speeds with the same frontier intelligence—now at promotional price of 9 premium requests through Feb 16. This release is early and experimental. Try it

📣 @AnthropicAI's Claude Sonnet 5 is now generally available and rolling out in GitHub Copilot. Early testing for Claude Sonnet 5 showed: • strong results across a range of coding scenarios, particularly for performance on CLI-style tasks. • excellent prompt-cache utilization https://t.co/KTLpnOggXP

Today we're launching Brand Skills in Claude. This is a set of skills /gooseworks that gives Claude full context on your brand — logo, colors, voice, positioning — so anyone can make on-brand ads and content directly in Claude, Claude Code, Cowork, or Codex. Here's how it https://t.co/ilXfDQXF5f

Claude Fable 5 is now available in Computer as an orchestrator model. This is Anthropic's state-of-the-art model for long, complex tasks. Available only to Pro and Max subscribers in Computer. https://t.co/TvpfwDkxG4

To support other researchers getting hands-on experience with NLAs, we’ve partnered with Neuronpedia to release NLAs on open models. Try them out here: https://t.co/8duHfPR1Jy

To truly understand AI’s economic impact, we’ll need to collect much more qualitative data like this. That’s why we’re launching the Anthropic Economic Index Survey. Each month, we’ll ask Claude users how AI is changing their work. For more details, see: https://t.co/kRdvr5Ohe4

Introducing value-prop ads in Claude We made a skill /goose-video that teaches Claude to one-shot the cleanest ad format there is: your product, your value props, one at a time. Great marketing is easy to understand. This format is nothing but the reasons to buy — each one https://t.co/3xZotpHGAd

Today we're introducing Claude for Founding. Just enter your prompt and Shipper oneshots a full business making you money in one click. This is truly insane. https://t.co/nU26icPGcS

We tested @claudeai Opus 4.8 (High) on APEX-SWE ahead of today's release. It's the new #1 at 45.3% Pass@1, nearly 4 points ahead of GPT-5.3 Codex (41.5%). Congrats @AnthropicAI on the release and having three models in the top 5! https://t.co/oIcn5wNvTN

Today, we're introducing Claude for business building. Just enter your website and it will code, design, launch and translate a mobile app inspired by the original website. This is just insane. https://t.co/GubnNgetLv

May means more models. Today we're introducing Anthropic's Claude Opus 4.8, available now in Copilot Cowork (Frontier) and rolling out to Copilot Chat, Excel, PowerPoint, and Copilot Studio early release cycle environments.