> What I'm saying is, Anthropic should create a versioning system for prompts, because they are the true "source code". Given the same prompt and the same sequence of random numbers, LLM will generate exactly the same code, which sounds awfully close to how compilers work. Once in a while put the generated code as a point of reference+ caching and presto.

Bad analogy, cause this is not how tooling works. Tools beget more tools - there's value in specifying "these are the sets of tools we need to make", but unlocking new capabilities doesn't happen unless you... make the tools. And use them. And keep them stable. And watch them break, or become obsolete, and build on top of that. The world has state and path dependent.