Character.AI is the largest product of its kind by an enormous margin — over 50 million Android installs, millions of user-created characters, and roughly 6.4 million searches a month for its name worldwide. It is also the platform this entire category defines itself against: almost every competitor sells itself as the thing Character.AI will not let you do. Set the expectation first — this is not an NSFW platform, and its filter is not going to loosen. What it offers instead is the biggest character catalogue on the internet, excellent creation tools and proper voice calls. This review covers all of that, plus the 2026 ad rollout that sent its Android rating to 2.2, the under-18 ban and the lawsuits behind it, and whether c.ai+ is worth paying for.
- Millions of user-generated characters — a catalogue no competitor is within an order of magnitude of
- Excellent creation tools: custom personality, backstory, greeting, example dialogue and voice, with no technical knowledge needed
- Live voice calls are a first-class feature, unlimited on the paid tier, not a novelty bolt-on
- Strict content filter blocks sexual content and has stayed strict for years despite sustained user pressure
- Google Play rating has collapsed to 2.2 stars across 2.44 million ratings, against 4.3 on the App Store — a 2.1-point gap on the same app
- Full-screen ads interrupt chats on the free tier by default; the company confirms this publicly and points users to the subscription
