# DSPy: Build and Optimize Agentic Apps

**URL:** https://community.deeplearning.ai/c/short-course-q-a/dspy-build-and-optimize-agentic-apps/527.md

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## [DSPy MIPRO optimized ReAct instruction did not improve](https://community.deeplearning.ai/t/dspy-mipro-optimized-react-instruction-did-not-improve/883746)

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**Author:** [@David\_Farago](https://community.deeplearning.ai/u/David_Farago)\
**Replies:** 2\
**Last updated:** [November 21, 2025, 11:24am UTC](https://community.deeplearning.ai/t/dspy-mipro-optimized-react-instruction-did-not-improve/883746 "2025-11-21T11:24:47Z")

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In section 4, Optimizing Agents with DSPy Optimizer, inspecting both \`react.react.signature\` and \`optimized\_react.react.signature\` shows the same instructions. Does that mean the optimizer improved the performance from a…