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Research Frontiers

Prompt engineering evolution and historical techniques (2020-2026)

OpenAI's first prompt engineer Andrew Mayne documents historical prompting techniques from 2020 onward, tracking evolution of prompt optimization patterns and their continued relevance to modern inference practices.

2 posts · First seen 2026-02-23 · Last activity 2026-02-23
TimeAuthorPost
2026-02-23T19:51 @Dorialexander i guess it's also against the law, but claude is mostly my dspy now. close recursive loop of prompt design => data check => feedback => reprompt etc.
2026-02-23T19:26 @AndrewMayne I've collected my notes on prompting going all the way back to 2020 when I started at OpenAI as their first prompt engineer @ Andrew Mayne Prompts Some seem silly now. Some are still very relevant. It was fun to go through the history of it all. https://t.co/tkga5Twnrh
@Dorialexander 2026-02-23T19:51
i guess it's also against the law, but claude is mostly my dspy now. close recursive loop of prompt design => data check => feedback => reprompt etc.
@AndrewMayne 2026-02-23T19:26
I've collected my notes on prompting going all the way back to 2020 when I started at OpenAI as their first prompt engineer @ Andrew Mayne Prompts Some seem silly now. Some are still very relevant. It was fun to go through the history of it all. https://t.co/tkga5Twnrh

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