How is it different than DSPy?

I haven't used DSPy this much, but as I understand it: this lang is more like an orchestration DSL for writing and running LLM conversations and tools, whereas DSPy is a framework that compiles and optimizes LLM programs into better-performing prompts...like DSPy has automatic improvement of pipelines using its compilers/optimizers. With DSPy you deal with modules and signatures.