Claude Opus 5.5 single-shots a riso-style train journey in ~45 minutes

mshort3 · reddit · 2026-09-23

A user found Claude Opus 5.5 shows a clear step-up in riso art and animation, single-shotting a JavaScript train journey animation in 45 minutes. The full repo is open-sourced (sevenevesai/riso-windowseat) and music uses open-source Salamander Grand Piano V3 samples — with the tip of having Claude source better instrument recordings for its scores.

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