More on-brand Meta creative at speed, with 90% less copywriter time for C4.

Breaking through on Meta now takes more creative, more variety and a steady pace of new ideas. For C4, that meant producing paid ads across products, flavors and offers at a scale that put constant pressure on the copy team. Every variation needed both image and post copy that sounded like C4, while each round of drafting and approval took time. C4’s risk and legal teams also required a private, sandboxed model environment before proprietary product information could be used in the workflow.

We built C4 a social copy writer within a private environment, rather than sending its briefs and proprietary information to public models. The team could enter a brief and receive multiple options for image and post copy, shaped by C4’s brand guidelines, style guides, product information, flavor profiles and previously approved work.

Writers chose the strongest ideas, sharpened the language and checked product claims before anything went forward. As C4 gave feedback, we updated the inputs so future drafts better reflected what the team would approve. Allowing us to get faster, smarter and better copy quickly.

We created a unique, sandboxed workflow that brought multiple LLM models together while meeting C4’s compliance requirements. Structured fields gave the models the context needed to write for C4, including proprietary formula information, without relying on public model workflows. Each brief produced paired image and post copy options for the team to review and refine.

Within four weeks, copy revision time fell from four hours to 1.5 hours. The team produced more than 25 deliverables a week with a 24-hour turnaround, while reducing copywriter time by 90%.