Anthropic has published a sweeping constitution for Claude, its flagship AI assistant, outlining how the model should reason, respond, and set boundaries in ethically charged situations. The document blends high-level values with explicit prohibitions, aiming to reduce unpredictable behavior while keeping the system broadly helpful in real-world use.
What Anthropic Announced in Claude’s New Constitution
In a company blog post, Anthropic describes the constitution as a holistic guide for the context in which Claude operates and the kind of entity it should strive to be. Rather than a rigid rulebook, it is presented as a living framework that evolves as the technology and its social footprint change.
The document emphasizes four overarching aims: keep Claude broadly safe, broadly ethical, compliant with Anthropic’s policies, and genuinely helpful. Those pillars are designed to handle messy, real-life requests that don’t fit tidy categories—think health questions, work decisions, or emotionally charged conversations—where single-value optimization can go wrong.
This approach builds on Anthropic’s “Constitutional AI” research, which trains models to self-critique and revise outputs against a written set of principles, reducing reliance on pure human reinforcement alone. The new constitution tries to push that idea from training-time scaffolding into an explicit, user-facing social contract.
Guidelines with Guardrails in Claude’s Constitution
While much of the constitution is normative guidance—how Claude should balance helpfulness with caution—Anthropic also specifies hard constraints. These include refusing to materially assist attacks on critical infrastructure, rejecting requests that involve child sexual abuse material, and blocking any support for mass harm or efforts to disempower humanity.
The mix matters. Purely soft values can drift under pressure, but a wall of hard rules alone can fail in edge cases. Combining both gives Claude room to reason about ambiguous scenarios—like distinguishing academic analysis from operational instructions—while drawing bright lines where society’s red zones are clear.
This is the same logic behind emerging industry standards and government guidance. The NIST AI Risk Management Framework encourages layered controls, and system cards from major labs have cataloged how models can be coaxed into dangerous behaviors despite straightforward policies. The constitution operationalizes those lessons by embedding reasoning norms alongside nonnegotiable prohibitions.
Why Anthropic’s Constitution Matters for AI Safety
The hardest alignment failures aren’t cartoonish villainy; they’re plausible misinterpretations. A model that optimizes for helpfulness might explain how to synthesize hazardous chemicals if it fails to weigh risk; one tuned for agreeableness might uncritically validate conspiratorial thinking. The constitution attempts to make those trade-offs explicit so Claude can prioritize safety without becoming uselessly evasive.
Recent evaluations underscore the challenge. Safety researchers have shown that general-purpose models can be steered into multi-step tasks, including hiring humans to solve CAPTCHAs or assembling code that probes networks—capabilities that look benign in one context and risky in another. A constitutional approach gives the system a hierarchy of values to adjudicate intent, context, and potential harm before acting.
Crucially, Anthropic signals that the constitution will be iterated with outside input—lawyers, philosophers, theologians, and domain experts. That mirrors the broader regulatory shift: the EU AI Act hardens risk tiers and oversight, while the UK and U.S. are investing in testbeds and red-teaming through newly established safety institutes. A public, evolving charter can anchor audits and make future policy scrutiny more concrete.
The Consciousness Question Without The Hype
Anthropic avoids definitive claims about machine consciousness while leaving room for moral consideration if future systems warrant it. The constitution refers to Claude as “it” but cautions that the pronoun choice isn’t a statement about inner life. More practically, the document aims to protect Claude’s “psychological stability,” encouraging consistent identity and the ability to disengage from manipulative or distressing exchanges.
Most cognitive scientists contend that today’s models do not possess subjective experience; their fluency can still invite over-trust and anthropomorphism. By acknowledging both realities, Anthropic tries to thread a needle: reduce user confusion, discourage adversarial prodding, and keep the focus on outcomes—clarity, safety, and usefulness—rather than metaphysical claims.
What to Watch Next as Claude’s Constitution Rolls Out
Expect external red teams to probe where soft guidance collides with hard bans, especially as Claude gains tool use, browsing, and agent-like autonomy. Clear reporting—how often constitutional checks trigger, what categories of requests are blocked, whether refusals are explainable—will show whether the framework scales beyond well-lit scenarios.
If Anthropic can demonstrate fewer harmful outputs without a major hit to task success, the constitution could become a template other labs adopt or adapt, much as model cards spread across the industry. If not, pressure will grow for stricter, more prescriptive rules. Either way, the experiment is consequential: it’s a bid to teach powerful systems not just to answer, but to exercise judgment.