Exploring Claude's Constitutional Mechanism and Open Source Potential
gerardsans · x · 2026-07-19
The discussion highlights that after base model training, the post-training and RLHF phases are the true determinants of model behavior, and this data is typically undisclosed.
This stage is driven by a so-called "Constitution." If Claude is viewed as a persona defined by a public "Claude Constitution" rather than just model weights, it is theoretically possible for non-Anthropic labs to train models exhibiting Claude's characteristics based on these specifications.
Related event: Claude's Constitutional AI: Post-Training Dictates Model Behavior(2 posts)→
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