# Hallucination

When a model states something false with complete confidence — an API that does not exist, a function that was never written.

Also called: hallucination, hallucinate.

## Covered in these lessons

- [What Claude Code actually is](https://zero2vibecode.com/learn/claude-code/0-1-what-is-claude-code)

Source: https://zero2vibecode.com/glossary/hallucination