PromptLayer in this channel In the captured material, PromptLayer appears as the company behind the prompt-engineering platform explored in How to Win With Prompt Engineering (Ep. 38). Its co-founder and CEO, Jared Zoneraich, presents PromptLayer as a home for the prompt engineering workflow: iterating on the “source code” of an LLM application through three core primitives — the prompt, the eval, and the data set [^d351f8cb-2125-5ece-8488-6f6ee66c9ee2@120]. Why it matters The episode argues that prompt engineering endures because its real job is putting domain knowledge into your LLM system — the pleasantries may be automated away, but the core primitives remain [^d351f8cb-2125-5ece-8488-6f6ee66c9ee2@151]. PromptLayer, as presented here, is the platform that houses that workflow: encoding domain knowledge into reusable artifacts and correcting the system when it misses, rather than relying on one-off trial and error. <KeyPoint>PromptLayer is the prompt-engineering platform founded by Jared Zoneraich, featured in Ep. 38.</KeyPoint><KeyPoint>Its workflow is built on three primitives: the prompt, the eval, and the data set.</KeyPoint><KeyPoint>The platform treats prompts as the “source code” of an LLM application to be iterated on deliberately.</KeyPoint>