Speak, a language-learning app supported by OpenAI’s Startup Fund, rapidly expanded into 11 markets within a year, leveraging PromptLayer to enhance AI feature development without over-relying on engineering resources. This tool empowered Speak's non-technical teams, especially in content and product development, to efficiently create and iterate on AI-driven content and features. For instance, PromptLayer enabled the product team to scale curriculum content creation from months to a single week and facilitated the development of the "Magic Wand" feature by allowing product managers to test and refine prompts independently. In terms of international expansion, PromptLayer helped localize customer support responses, significantly reducing time and costs associated with entering new markets. Overall, PromptLayer provided substantial time savings, reduced engineering dependency, and allowed for more agile iterations, leading to a more efficient and scalable business operation for Speak.