DSPy 3.0 in Python: Programming (Not Prompting) LLMs in 2026
DSPy 3.0 turns prompt engineering into a compile step. Build typed LLM programs in Python, then let MIPROv2 optimize prompts against a metric on your data.
DSPy 3.0 turns prompt engineering into a compile step. Build typed LLM programs in Python, then let MIPROv2 optimize prompts against a metric on your data.
Instructor, Outlines, and Pydantic AI each solve structured LLM outputs a different way. Here is how to choose in 2026, with working code and FastAPI patterns.