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Anthropic publishes a new constitution for Claude

See how this story connects

Source: Anthropic: Claude’s new constitution

Anthropic published a new constitution for Claude, a detailed description of the values and behaviour it wants the model to have and of the context in which Claude operates. Anthropic said the document is a central part of its model training process.

Why it matters

Users and researchers can read the full text Anthropic trains Claude against, and check model behaviour against it.

When
22 Jan 2026
ID
WTA-N-2026-0152
Who
Anthropic

Summary by wheresthe.ai, from Anthropic. Checked against the source on 9 Oct 2026.

Read the original at Anthropic

Source copy: download the page as saved on 18 Oct 2026 (PDF). Document the source offers: document 1 (PDF). Also held by the Internet Archive.

Cite this story

WTA-N-2026-0152: “Anthropic publishes a new constitution for Claude.” wheresthe.ai, 22 Jan 2026. https://wheresthe.ai/d/anthropic-claude-new-constitution-2026-01/ (source: Anthropic: Claude’s new constitution).

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