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

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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.
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From sketch to home, built in 3D with Claude Opus 5.5 using Three.js + TSL. The architecture evolves through four stages: first lines, massing, detail, and finished home.
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My wife: Can AI help us see how the new bed will fit in Mila's room? Me: Sure. Opus 5.5:
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What are you going to explore with Opus 5.5 this weekend?
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Claude Opus 5.5 has been out for a few days. Some of our favorite things people have explored and discovered with it so far:
I asked Opus 5.5 to explain camera focus by building an interactive lens lab Here's what it came up with after 1 hour 26 minutes in one shot, $25.66 API cost lens.lab.sael.net Move the focus ring and you can see the glass elements shift the sharp plane through the scene
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同じ大阪城を、Three.jsとBlenderで作り比べました。 最初はブラウザ(Three.js)で作ったけど、blenderでもやってみました。 ・描画時間 約1.5時間(M4 MacBook) ・素材は無料のCC0テクスチャ ・Blenderは一度も開いていない リアルさを取るならBlender、手軽さならThree.jsかな。3Dの比較に触りやすい。
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Opus 5.5 made this galloping horse (entirely in code every pixel drawn procedurally). One self-contained HTML file. Vanilla JS + Canvas 2D. No images or libraries. 128×96 pixels, articulated legs driven by inverse kinematics, 12-pose gallop... Something is happening...
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You can now discover tools, agents and expert partners on Claude Marketplace. Use it to: - Add connectors and plugins like Slack and Notion - Buy agents and products from companies like Cursor and CrowdStrike - Scale with service partners like Accenture and Deloitte
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A thread of early explorations with Claude Opus 5.5: A short story about a watermelon created by @kevin_t_ngo.
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An algorithmic drawing program created by @kevin_t_ngo. Every drawing is based on a different seed.
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Claude Opus 5.5 is available today. What will you explore?
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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.
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Together, these advances make Opus 5.5 a noticeably better collaborator. We’re excited to see what you build and discover. Read more: anthropic.com/claude-opus-5-…
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One more thing: we’re increasing five-hour usage limits on Pro, Max, and Team plans. We’re also providing subscription users a rate limit reset, which you can save and use whenever you choose.
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