AI vocabulary
A model isn't the same thing as the tool you use it in
A company makes models. People and companies build agents and tools on top of them.
The company
Example models, as of October 2026
Its own tools and agents
Anthropic
OpenAI
Google
Claude Fable, Opus, Sonnet and Haiku
GPT-6, from most capable to most efficient (e.g. Astra, Sol, Luna)
Gemini Argon, Pro and Flash, plus Nano Banana for images
Claude, Claude Code, Claude in Chrome
ChatGPT, Codex
Gemini, Spark, NotebookLM
Model names change often. Independent tools like Lovable and CodeYam (which I build) choose which models to support.