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Field notes from the AI frontier

LLMs trained on synthetic data

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Now that some very strong LLMs like DeepSeek-R1 are out as open source, a new phase is taking shape: training the next LLMs on high-quality datasets that are… synthetic.

A startup called Prime Intellect used DeepSeek-R1 to generate 1.4M reasoning examples in math, code and science, domains where answers are easy to verify. The dataset is meant for training even better reasoning models.

It’s a fascinating development:

  • LLMs no longer depend solely on humans to produce high-quality training data.
  • Human-annotated data is slow to produce. Needing less of it speeds up model improvement.
  • This “recursive” development of AI should mean faster iteration cycles.

Like robots building robots.