Starter kit: two agents make the same launch film in code

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

JavaScript motion-graphics engine plus a skill that lets GPT models like Astra and Sol author polished programmatic videos.

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.