gpt-js-animations: motion graphics engine and skill for GPT models

Sol gets one hour, a Remotion project and a $5 OpenRouter budget to produce a video.

Coding tests of Sol released two days after Sonnet 5.5, noting the odd behaviours seen while building with it.

Official summary of the Intelligence Index result, with pricing and cache-read changes.

Follow-up head-to-head with the creator reporting a clear winner after repeated trials.