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Anthropic· Released Sep 22

Claude Opus 5.5

First model in Anthropic's Claude 5.5 family. Positioned for agentic coding, knowledge work and long tasks; priced at $4/$20 per million input/output tokens, about 30% faster output than Opus 5, and top scores on Anthropic's behavioral alignment audit.

Warehouse management software styled like a strategy gameOct 3

Entries

Jayden Davis

@JaydenDavisNC · Sep 25

A paint-shooter inspired by Splatoon built by Opus 5.5, shared with gameplay footage and a link to play it.

Higgsfield AI 🧩

@higgsfield · Sep 28

Using Computer Use and the Higgsfield MCP, the model divided work among twelve machines to make visuals, animation and a finished launch video from one prompt.

Andrew Jiang

@andrewjiang · Sep 24

Andrew Jiang had Opus 5.5 produce a short film forecasting the coming five decades, optimistic about the destination and wary of the transition.

athemeroy

@athemeroy · Oct 3

Bilingual catalogue of 168 reviewed Claude 5.5 video cases with sampled frames, source-post links, production-path guidance and CSV data.

soyukke

@soyukke_game · Sep 23

A Japanese developer asked Opus 5.5 to make a game around the idea that the trolley problem is not a real dilemma, and shared the playable result.

josh

@eudaemonea · Sep 23

After Anthropic published its Functional Emotions paper, the creator had Claude write a song and then Opus 5.5 build the video for it.

Claude Opus 5.5: quick answers

What can you build with Claude Opus 5.5?
People have published 201 public builds made with Claude Opus 5.5. The most common uses are animation videos (58), games (45), 3d graphics (22), design (14) and education (13).
What are the best Claude Opus 5.5 GitHub repos?
The most-starred open-source Claude Opus 5.5 projects in the index are "I'm Upping My P(doom)" music video, full source, Awesome Opus 5.5 Videos (prompt gallery) and LiveNerf: daily check for Opus 5.5 degradation.
Are there Claude Opus 5.5 demo videos?
Yes: 1 video show Claude Opus 5.5 in use, each linked to the original post.
Where do people share Claude Opus 5.5 projects?
Mostly on X, Reddit and GitHub, from 186 creators between Sep 22 and Oct 7.