Automated Prompt Optimization in Production: Signatures, Teleprompters, and Metric-Driven Compilation with DSPy
Manual prompt engineering remains one of the largest sources of technical debt in modern LLM applications. Teams routinely spend weeks hand-crafting multi-paragraph system prompts, hardcoding few-shot examples, and tweaking phrasing to extract reliable outputs from specific model checkpoints. When the underlying model is upgraded, migrated to an open-weight alternative, or integrated into a multi-step pipeline, these hand-crafted strings break, requiring another cycle of trial-and-error adjustme
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