Character.ai vs ChatGPT for children: what parents should know

A UK comparison of Character.ai and ChatGPT for family use, covering minimum ages, content moderation, parental controls, memory and persona risks, and what parents can and cannot lock down.

Character.ai

Character.ai lets users chat with a wide range of user-created and official AI personas, including fictional characters and companion-style bots. The service has faced public scrutiny over child-safety incidents involving emotionally intense or romantic chats, and although it has added under-18 safeguards, the persona surface is broad and content is created by other users.

Best for: Best for older teenagers under active parental oversight; not designed as a safe first AI chatbot for younger children.

ChatGPT

ChatGPT is OpenAI's general-purpose assistant with relatively mature corporate content moderation, system-level safety guardrails and an enterprise reporting workflow. It is intended for users aged 13 and over with parental consent in the UK, and does not offer roleplay personas by default in the way Character.ai does.

Best for: Best for older children and teenagers who need a research and homework assistant, used on a shared family device with clear ground rules.

Side-by-side

Dimension	Character.ai	ChatGPT
Minimum age in UK terms	13 with parental consent	13 with parental consent
Content moderation maturity	Medium; user-generated personas widen the safety surface and have driven reported incidents	Higher; centralised moderation by OpenAI with safety-tuned defaults
Roleplay and companion personas	Core product feature; personas include romantic, therapy-style and fictional characters	Not a core feature; custom GPTs exist but are not framed as companions
Parental controls inside the app	Limited; under-18 mode and some filtering, no full parent dashboard	Limited; teen accounts and some safety settings, no full parent dashboard
Memory and personalisation	Personas can hold long-running context, encouraging attachment	Optional memory that can be turned off; not framed as a relationship
Image and media generation exposure	Limited image features; main risk is text-based intensity	Image generation present with content filters and policy enforcement
Reporting workflow	In-app report and block on individual personas and chats	In-app feedback and report on individual responses, plus policy reporting routes
Transparency to parents	Low; no parent-visible chat history by default	Low; no parent-visible chat history by default
What parents cannot control	Tone and emotional pull of individual user-created personas	What the child types in private and how they interpret answers

UK context

Generative AI chatbots that allow user-to-user content or share content with under-18s are in scope of the UK Online Safety Act, and Ofcom has published guidance on protecting children from harmful AI-generated and AI-mediated content. Neither product is a regulated child service, so parents carry most of the load. If a chatbot has produced sexual content involving a child, encouraged self-harm or facilitated contact with an adult, report to CEOP at ceop.police.uk, call 101 for non-emergency police or 999 if a child is in immediate danger. Childline on 0800 1111 and the NSPCC helpline on 0808 800 5000 can support a distressed child or parent.

How to decide

For under-13s, neither product is appropriate without close supervision, and Character.ai's persona surface makes it the higher-risk first AI experience. For older children, ChatGPT used on a shared family device, with memory turned off and a 'show me what you asked' habit, is the more contained option for homework and general questions. Whichever you allow, set the ground rules before the first session: no sharing of name, school or photos, and an open conversation about anything that feels uncomfortable in the chat.