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📝 The Character AI Blog

Ideas, updates &
stories worth reading

Product news, creator spotlights, AI research, and reflections from the team building Character AI.

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Research May 28, 2025

How we teach AI personas to understand subtext — not just text

Most language models respond to what you say. Our personas respond to what you mean. Here's the training approach that makes that possible.

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Creator Story May 15, 2025

I built a persona of my novel's protagonist. Half a million people have talked to her.

Rafael Torres explains how creating an AI version of his book character Isabelle changed the way he writes — and the way readers experience fiction.

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Safety May 3, 2025

Our approach to safe messaging: evidence, iteration, and humility

Designing AI that handles sensitive topics responsibly is one of the hardest problems in our field. Here's how we've approached it — and what we've learned.

Product April 22, 2025

Scenes: the new way to enter immersive collaborative worlds on Character AI

Scenes lets creators build shared narrative environments where users choose which persona to interact with inside a rich, pre-set fictional world.

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Research April 9, 2025

Measuring emotional resonance: can we quantify what makes a conversation feel real?

We developed an internal benchmark called EQ-Score to evaluate the emotional quality of AI responses. Here's what it measures and why we built it.

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Company March 30, 2025

Character AI reaches 100 million users — and what that means to us

We crossed a milestone this month that once felt impossible. Here's an honest reflection on what we got right, what we got wrong, and where we're headed.

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Creator Story March 14, 2025

Teaching emotional intelligence to an anime character: one creator's process

Keiko Yamamoto's persona "Hana" has had over 20 million conversations. She shares the painstaking process of writing her personality, backstory, and voice.

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Safety February 28, 2025

Transparency report: Q1 2025 content moderation statistics

We're publishing our quarterly transparency report covering reports received, actions taken, and what we learned from edge cases our systems didn't handle well.

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Product February 10, 2025

Charms: a new way to customize how your AI persona feels and responds

Charms are micro-personality modifiers that creators and users can apply to personas to fine-tune tone, communication style, and interaction tendencies.