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Claude @claudeai

Claude is an AI assistant built by @anthropicai to be safe, accurate, and secure. Talk to Claude on claude.ai or download the app.

Joined July 2025
  • Posts 566
  • Following 2
  • Followers 1,575,962
246 Photos and videos
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Claude
 @claudeai
Jul 1
Fable 5 is back.
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Squidsoup is a collective of artists and designers who make immersive experiences with sound, light and space. We caught up with them before one of their largest projects to date: a live performance with an orchestra at the Southbank Centre in London.
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A conversation with Boris Cherny and Cat Wu on the path from Claude Code to Claude Tag, and how it spread from engineering to the rest of Anthropic. Claude Fable 5 is now available in Claude Tag.
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The hackathon will run July 7-13. Apply by Sunday: cerebralvalley.ai/e/built-wi…

Built with Claude: Life Sciences

Join us for Built with Claude: Life Sciences, a global virtual hackathon in partnership with Gladstone Institutes, a biomedical research organization in San ... | Tuesday, July 7, 2026 • Remote

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Announcing Built with Claude: Life Sciences, a global virtual hackathon. Join us and @GladstoneInst for a week of researching and building with Claude Science and Claude Code, with a prize pool of $100k in credits.
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Read the Fable 5 blog post here: anthropic.com/news/claude-fa…

Claude Fable 5 and Claude Mythos 5

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

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If one of your requests is mistakenly flagged in Claude Code, run /feedback to file a report. On Claude.ai and Cowork, you can share feedback through the thumbs buttons. This feedback helps us further tune these classifiers and reduce false positives over time.
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All paid plans with usage included can access Fable 5 through July 7. You can use Fable 5 up to 50% of your weekly usage limit, after which you can switch to another model for the remainder of your usage. You can also continue using Fable via usage credits. More here: support.claude.com/en/articl…

Claude Fable 5 promotional access | Claude Help Center

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Following conversations with the US government, we’ve updated our cybersecurity safeguards. The vast majority of coding work is unaffected. In the near term, the new safeguards will flag a slightly higher fraction of harmless requests than the previous Fable safeguards; we’re working to refine these over the coming weeks. Users will be clearly notified when a request is flagged, and they’ll instead receive a response from Opus 4.8. Our biology and chemistry classifiers are unchanged from our initial launch. These are still broader than we would like; they trigger fallbacks to Opus 4.8 on basic biology-adjacent questions. Improvements to these classifiers are landing soon.
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Claude reposted
Anthropic
 @AnthropicAI
Jun 30
We’ve received notice that the Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5. We'll begin restoring access tomorrow, and will share an update soon. We’re grateful to our users for their patience, and to everyone who worked with us on redeploying the models.
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Sonnet 5 is now the default on Free and Pro, and available to Max, Team, and Enterprise users. It's live across all Claude apps and the Claude Platform today, with introductory pricing through August 31: anthropic.com/news/claude-so…

Introducing Claude Sonnet 5

Our most agentic Sonnet yet, with top-tier intelligence for coding and everyday professional work.

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Early access partners found Sonnet 5 finishes complex tasks where previous Sonnets stopped short, checks its own output without being asked, and does all its agentic work at an attractive price point.
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Sonnet 5 is a substantial improvement over Sonnet 4.6 on reasoning, tool use, coding, and knowledge work. Its performance is close to Opus 4.8, at lower prices.
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Introducing Claude Sonnet 5, our most agentic Sonnet yet. It makes plans, uses tools like browsers and terminals, and runs autonomously at a level that just a few months ago required larger and more expensive models.
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More on Claude Science: anthropic.com/news/claude-sc…

Claude Science, an AI workbench for scientists

Claude Science is a customizable app that integrates the tools and packages researchers most often use, produces auditable artifacts, and provides flexible access to computing resources.

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Learn more: claude.com/science
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Introducing Claude Science, a new app designed with every stage of research in mind. Artifacts traced to their code, environments managed on demand, and 60 optional scientific databases that you can connect. Available now in beta.
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Inference runs on Azure infrastructure, operated by Anthropic. Prompt caching and extended thinking are supported today, with more capabilities on the way. Read more: claude.com/blog/claude-in-mi…

Claude in Microsoft Foundry is now generally available | Claude by Anthropic

Starting today, Claude models are generally available in Microsoft Foundry, hosted on Azure.

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Claude in Microsoft Foundry is now generally available, hosted on Azure. Azure customers get Claude Opus 4.8 and Claude Haiku 4.5, with Azure authentication, billing, and commitment retirement.
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Claude Tag is available in beta today on Slack for Claude Enterprise and Team plans. We plan to expand it more widely in the future. Read more: anthropic.com/news/introduci…

Introducing Claude Tag

Claude Tag is a new way for teams to work with Claude.

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