Claude Opus 4.7 vs. Claude Sonnet 4.6 for Marketing Operations: Which Model Should Actually Run Your Marketing Stack

For marketing teams that have moved from experimenting with AI to actually building it into their core operations, the question of which Claude model to use isn't theoretical anymore — it's a budget line item with real cost and quality implications every month. Claude Opus 4.7 launched in April 2026 at $5/$25 per million tokens. Claude Sonnet 4.6 sits at $3/$15. Both are capable. Both have legitimate marketing use cases. And the wrong default can leave you spending 40-60% more than you need to without any noticeable lift in output quality. Here's how to actually think through the choice for marketing operations specifically — what each model is best at, where the cost-performance tradeoff lands for the work that actually gets done in modern marketing teams, and how to build a routing strategy that gets the leverage of Opus where it counts and the cost efficiency of Sonnet everywhere else.