ChatGPT
OpenAI's consumer chat product (Nov 2022), built on the GPT family of models.
- Text, voice, image, file inputs; Custom GPTs, Canvas, Memory.
- Tiers: Free, Plus, Pro, Team, Enterprise.
- Defined the modern AI assistant category.
When to use: For general-purpose chat, creative work, and casual coding.
Example: ChatGPT Plus ($20/mo) includes GPT-5, voice, image gen, browsing, and Canvas.