Uploaded January 2026 | Updated September 2026, 1 week ago

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Anthropic has a new Constitution for Claude.
It's like the old "Soul Document"
It gives Claude a personality and a set of rules to live by.
The reasons behind these documents are absolutely wild...

The latest AI News. Learn about LLMs, Gen AI and get ready for the rollout of AGI. Wes Roth covers the latest happenings in the world of OpenAI, Google, Anthropic, NVIDIA and Open Source AI.

Claude’s Constitution
anthropic.com/constitution

Personality Basins
https://near.blog/personality-basins/

The Meaning of Shoggoth AI Memes
lesswrong.com/posts/yjzW7gxk2h7bBs2qr/the-meaning-of-shoggoth-ai-memes

The assistant axis: situating and stabilizing the character of large language models
anthropic.com/research/assistant-axis

Persona vectors: Monitoring and controlling character traits in language models
anthropic.com/research/persona-vectors

Claude 4.5 Opus' Soul Document
lesswrong.com/posts/vpNG99GhbBoLov9og/claude-4-5-opus-soul-document

Claude Soul Doc
gist.github.com/Richard-Weiss/efe157692991535403bd7e7fb20b6695#file-opus_4_5_soul_document_raw-txt

Andrej Karpathy
Don't think of LLMs as entities but as simulators.
https://x.com/karpathy/status/1997731268969304070


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