What is Constitutional AI and how does Anthropic use it to train Claude?
Answered at 12:00 in A Conversation with Daniela Amodei, Co-Founder and President of Anthropic · It's Not Magic, a Sixth Street podcast
What is Constitutional AI and how does Anthropic use it to train Claude?
Constitutional AI is a training framework that gives Claude an ethical system and moral framework rather than just rewarding correct answers. Anthropic trained it using various documents including the U.N. Declaration of Human Rights and Apple terms of service, allowing the model to understand how people should be treated and grapple with complex ethical questions. This approach has both increased the ethicalness of answers and improved overall model intelligence and capability.
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In short
Constitutional AI is a training framework that gives Claude an ethical system and moral framework rather than just rewarding correct answers.
Daniela Amodei, President and Co-Founder at Anthropic · A Conversation with Daniela Amodei, Co-Founder and President of Anthropic · It's Not Magic, a Sixth Street podcast · answer at 12:00
Key takeaways
- Constitutional AI is a training framework that gives Claude an ethical system and moral framework rather than just rewarding correct answers.
Quote to remember
“We are underestimating the degree to which AI and human compatibility and partnership are going to be how we walk into this new world.”
— Daniela Amodei
The full answer · about 4 min
Constitutional AI is a training framework that gives Claude an ethical system and moral framework rather than just rewarding correct answers. Anthropic trained it using various documents including the U.N. Declaration of Human Rights and Apple terms of service, allowing the model to understand how people should be treated and grapple with complex ethical questions. This approach has both increased the ethicalness of answers and improved overall model intelligence and capability.
Key facts
- Anthropic founded in 2021 as a public benefit corporation
- Anthropic employs 1,300 people in San Francisco
- Anthropic serves over 300,000 business customers globally
- Developers report running Claude Code 100% of the time while working, achieving twice the productivity
- Claude Opus 4.5 released January 2026, with Opus 4.6 released February 5th