Google's 'Prompt Repetition' Breakthrough: Boosting LLM Accuracy with a Simple Copy-Paste

research#llm📝 Blog|Analyzed: Feb 14, 2026 03:36
Published: Feb 9, 2026 06:32
1 min read
Zenn LLM

Analysis

Google Research has discovered a surprisingly effective technique: repeating important parts of a prompt to significantly boost the accuracy of LLMs. This simple 'Prompt Repetition' strategy jumps accuracy from 21% to a remarkable 97% on non-reasoning tasks, suggesting a cost-effective way to improve LLM performance in practical applications. This highlights the potential of revisiting fundamental approaches to enhance current LLM architectures.
Reference / Citation
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"The conclusion Google came to was far too simple, and brutal: 'You don't need to think hard. Copy and paste the important parts of the prompt again and paste them at the end.'"
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Zenn LLMFeb 9, 2026 06:32
* Cited for critical analysis under Article 32.