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Bookend Key Instructions in Long Prompts

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Alex Prompter
Contributed byAlex PrompterXSource

Apr 15, 2025

Bookend Key Instructions in Long Prompts A prompt engineering tip to repeat critical instructions at both the start and end of a prompt to ensure they are not lost in long contexts.

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Put important instructions TWICE - at the beginning AND end of your prompt. GPT-4.1 has a 1M token context (4x larger than before), but this means your key instructions can get lost. Bookend them! "I need a formal tone... [rest of request]... Remember, keep it formal."

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References

Categories:productivity| twitter| prompt-engineering| instruction-placement

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