Constitutional AI
The short answer · 22 words
In short
Method developed by Anthropic, in which an AI system assesses and improves its behavior and responses on the basis of explicit principles.
Flow-alerta.cab (2026): Constitutional AI. https://flow-alerta.cab/en/glossar/constitutional-ai. Editorially reviewed on: 09 October 2026.
How much detail would you like?
Practical
Relevant for alignment and model training, because desired behavior can be described more explicitly than via exclusively individual human labels.
Hypothetical example: A training system allows a model to critique a problematic answer on the basis of fixed principles and generate an improved variant.
Relevant for companies above all as a basic concept for alignment, guidelines and the translation of abstract principles into testable model behavior.
At a glance
- Core
- Constitutional AI uses a collection of natural language principles as a constitution. In the original method, a model first generates answers, critiques and revises them on the basis of these principles and can then be further trained with AI-generated feedback.
- Use
- Relevant for alignment and model training, because desired behavior can be described more explicitly than via exclusively individual human labels.
- Example
- Hypothetical example: A training system allows a model to critique a problematic answer on the basis of fixed principles and generate an improved variant.
- Limits
- View the constitution as objective or universal; confuse training method with runtime content filters; adopt principles without conflict and border case review.
In context
Claude
AI product family from Anthropic with language models and applications for text, code, analysis, multimodal tasks and agent work.
Constitutional Classifiers
An anthropoic security approach, in which classifiers are designed to detect harmful inputs and outputs using natural language rules and training data generated from them.
Questions about this term
Is Constitutional AI just a system prompt?
No.
Who developed the approach?
Anthropic.
Does a constitution mean error-free behavior?
No.
All details and background
Constitutional AI uses a collection of natural language principles as a constitution. In the original method, a model first generates answers, critiques and revises them on the basis of these principles and can then be further trained with AI-generated feedback.
ELI5 – Explained simply
Instead of having each individual answer evaluated by humans, the model gets a rule catalogue with which it should test and improve answers itself.
Why it matters in practice
Relevant for alignment and model training, because desired behavior can be described more explicitly than via exclusively individual human labels.
Example
Hypothetical example: A training system allows a model to critique a problematic answer on the basis of fixed principles and generate an improved variant.
Pitfalls and limits
- View the constitution as objective or universal; confuse training method with runtime content filters; adopt principles without conflict and border case review.
Origin & history
Anthropic published Constitutional AI: Harmlessness from AI Feedback in 2022. The published constitutional principles for Claude will be further developed.
Use in mid-sized companies
- Relevant for companies above all as a basic concept for alignment, guidelines and the translation of abstract principles into testable model behavior.
Related terms
- Alignment
- RLHF
- RLAIF
- Claude
- Constitutional Classifiers
- AI security
Matching Flow-alerta service
AI adoption & supportAI implementation & support: clarify usage guidelines, limits, responsibilities and escalation paths.Matching tool / use case
View use casesUse Case: Development and evaluation of explicit behavioral principles for an AI assistant.Sources
- arxiv.orgAnthropic, Constitutional AI
- www.anthropic.comAnthropic, Claude’s Constitution
Quellenprüfung: 09.10.2026. Definition und dokumentierte Einordnung abgeglichen; Beispiele beschreiben mögliche Anwendungen.
Editorially reviewed on: