Opus 5.5 vs. GPT-6 ASTRA vs. Sonnet 5.5 in Motion Design

A recent comparison on reddit.com's dev_community pitted Opus 5.5, GPT-6 ASTRA, and Sonnet 5.5 against each other in a motion design challenge. All three models were given the prompt: “Make the most complex motion design video you can.” The results were presented side-by-side in a video, inviting community feedback on which model they would use and what changes they would suggest.

This comparison uniquely evaluates Opus 5.5, GPT-6 ASTRA, and Sonnet 5.5 side-by-side on a complexity prompt, unlike typical feature-based reviews.