Opus 5.5 destroys GPT-6 Astra for marketing (7 real use cases)

24 Sept 2026 · 22 min
21:35

Eric Siu tests Claude Opus 5.5 against GPT-6 Astra on seven marketing tasks. Opus 5.5 wins six of seven, producing clearer ad concepts, better funnel analysis, and more actionable proposals despite higher cost. GPT-6 Astra only wins on video editing.

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