Langchains prompts abstraction is definitely a bit wonky. However, their more general patterns for things are pretty good for prototyping and getting something

Langchains prompts abstraction is definitely a bit wonky. However, their more general patterns for things are pretty good for prototyping and getting something working fast. And things like caching + retries is nice to have. Imo start with langchain but once you get an idea of where you are going build it yourself.