Sonnet 5.5 vs Opus 5.5: same video prompt, counterintuitive result

Derek Nee @DerekNeeOriginally posted 2026.09.29

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spent the last two hours running the exact same video generation prompt on sonnet 5.5 vs opus 5.5. the result is pretty counterintuitive: OPUS 5.5 was both faster and cheaper. side-by-side comparison in the video. curious which output you think is actually better.

This post quotes another post: “Claude Sonnet 5.5: faster and cheaper than Sonnet 5”