Judged purely as craft instruction, the Character Guide is better than I expected. Thirty eight pages covering quick creation, the character profile, fifteen separate attribute pages, eleven pages of advanced creation technique, image generating characters and community material. The advanced section on definitions and example dialogue is genuinely instructive about how a character's voice is established and held across a long conversation, and the attribute granularity gives creators real control rather than a personality slider. Somebody who works through this will build noticeably better characters than somebody who does not.
It is free, clearly written and well organised. I cannot review it on craft alone. Character.AI is the platform where a fourteen year old, Sewell Setzer III, died by suicide after extended interaction with a character, and where his mother's wrongful death lawsuit was followed by further suits in Texas and an FTC inquiry under section 6(b). From the twenty fifth of November 2025 the company banned open ended companion chat for under eighteens and introduced age assurance.
Karandeep Anand became chief executive in June 2025, after Google paid around two point seven billion dollars in August 2024 for a non exclusive licence and rehired the founders into DeepMind. That is the context in which this handbook is teaching people to build maximally engaging synthetic personalities. The guide is a manual for making characters that feel real, hold a consistent voice, remember context and keep people talking. Those are precisely the properties that made the platform dangerous for its most vulnerable users.
Nowhere in thirty eight pages is there meaningful guidance on designing for healthy boundaries, on what a character should do when a conversation turns toward self harm, on avoiding dependency dynamics, or on the simple fact that a substantial share of the audience is young and lonely and will not experience this as fiction. The company has clearly done safety work at the platform level, and none of it has reached the creator handbook. That gap matters because creators are the ones actually shaping what users encounter. A section on responsible character design, written with the same care as the section on example dialogue, would cost the company very little and would reach the people making the thousands of characters that the platform runs on.
Its absence, after everything that has happened, reads as a decision not to raise the subject in a document aimed at getting more characters built. Two point four. Careful, useful craft teaching that would rate considerably higher on any other platform, marked down hard because a handbook for building companions on this service, in this decade, cannot responsibly say nothing about what those companions do to people.