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Large Language ModelsOpen-Source AIHacker NewsPublished: Aug 23, 2026, 10:00 JST1 min read

535B LLM open training begins

535B LLM open training begins

Key takeaway

  • A 535B parameter LLM is being trained openly.

  • Percy Liang announced it.

  • It uses 23B activated parameters.

3 Key Points

  1. What happened

    A new 535B parameter LLM with 23B activated parameters is being trained openly, as announced by Percy Liang.

  2. Why it matters

    Open training allows public visibility into the model's development, which could inform future AI research and adoption.

  3. What to watch

    The training progress and how the model's performance compares with existing large models.

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Context & Analysis

Open training of large language models is rare because of the high compute and data costs. This initiative makes the process transparent, potentially allowing the research community to observe how a 535B parameter model develops. The use of 23B activated parameters suggests a sparse architecture, which could reduce inference costs. Observing this training may provide insights into model scaling and efficiency, though the outcome is still uncertain.

FAQ

What is the size of the model being trained?
The model has 535B total parameters and 23B activated parameters.
Who announced the open training?
Percy Liang announced it via a tweet.

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