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Sweep 09 Oct 2026 · 17:27Z Build v2.1.296 517 read Stable v2.1.287 Latest v2.1.296 Next v2.1.296 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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develop-tests changedtest-and-evaluate/develop-tests

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77Building a successful LLM-based application starts with clearly defining your success criteria and then designing evaluations to measure performance against them. This cycle is central to prompt engineering.
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9![Flowchart of prompt engineering: test cases, preliminary prompt, iterative testing and refinement, final validation, ship](https://platform.claude.com/docs/images/how-to-prompt-eng.png)
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10 ![Flowchart of prompt engineering: test cases, preliminary prompt, iterative testing and refinement, final validation, ship](https://platform.claude.com/docs/images/how-to-prompt-eng.svg)
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1113## Define your success criteria
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