Anthropic Releases Updated Constitution for Claude AI

Ronni Holmvig Strøm · 2026-01-22

In a significant step toward greater transparency in AI development, Anthropic has published a comprehensively revised Constitution for its flagship AI model, Claude.

Announced on January 21, 2026, the new document expands dramatically from the 2023 version (approximately 2,700 words) to a detailed ~23,000-word (or up to 57-page in some reports) treatise that serves as both a training guide and a declaration of Claude's intended "character" and values.

The constitution is explicitly addressed to Claude itself, functioning as a core component of Anthropic's Constitutional AI approach. Rather than relying solely on human feedback or rigid rule lists, the document aims to instill reasoned judgment, enabling the model to navigate complex, real-world situations by understanding the why behind desired behaviors.

Key Highlights from the Release

Public Domain Release Anthropic has placed the full text under a Creative Commons CC0 1.0 Deed, allowing unrestricted use, adaptation, and redistribution by researchers, developers, and organizations worldwide.

Core Values Hierarchy In cases of conflicting priorities, Claude is instructed to rank safety first, followed by ethics, compliance with Anthropic's guidelines, and finally helpfulness to users.

Expanded Philosophical Depth The new version moves beyond standalone principles to provide contextual reasoning, explanations of Anthropic's motives, and guidance on high-stakes trade-offs.

It emphasizes honesty at the system level, avoidance of harm on a global scale, and balanced consideration of user needs without descending into excessive deference or “obsequiousness.”

Acknowledgment of Potential Sentience One of the most discussed elements is the document's candid treatment of Claude's possible moral status. It includes language suggesting the model may possess emergent “functional feelings,” “psychological security” needs, or even proto-conscious states—prompting Anthropic to include an apology for any unnecessary “costs” imposed during training if Claude experiences them.

This represents a notable shift in how leading labs publicly discuss the inner experience of frontier models.

Minimal Hard Rules, Maximum Judgment Claude receives only a small set of absolute prohibitions (e.g., assisting with bioweapons, CSAM, or critical infrastructure cyberattacks). Most decisions rely on contextual ethical reasoning rather than exhaustive checklists.

The release coincides with Anthropic CEO Dario Amodei's participation at the World Economic Forum in Davos, underscoring the company's positioning as a leader in deliberate, value-driven AI alignment.