This is a much-needed abstraction for the Java ecosystem. Python devs have had clean LLM client libraries for a while, but Java teams often end up writing boilerplate HTTP wrappers that are painful to maintain. The fluent API pattern makes a huge difference for readability, especially when you're chaining prompts with function calling or RAG retrieval steps. I'm curious how Spring AI handles streaming responses and backpressure — that's usually where fluent APIs start to get tricky with LLMs.