How difficult would it be to recreate GPT-4

Reddit r/artificial / 6/6/2026

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Key Points

  • The article is a Reddit-style question asking how difficult and costly it would be for a company to recreate GPT-4 or an equivalent model.
  • It references an earlier example from 2024 where GPT-2 was reportedly run inside an Excel spreadsheet, suggesting that model capabilities can be adapted to unusual environments.
  • The question considers that GPT-4 was released in 2023 and argues that since then improved hardware and chips may reduce the effort needed.
  • It asks whether a competent S&P 500 company could undertake the work independently (implying the need for talent, compute, data, and engineering).
  • Overall, the piece frames the challenge as a tradeoff among compute cost, time, and technical ability rather than a single definitive method.

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