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Cortex is built by the Cortex Foundation, a research-first lab. The products share one account, one domain, and one set of models. Use Chat for conversation and research, Code for a repository, Bot for an always-on teammate with its own computer, Design for persistable canvases, and the CLI to drive Code from a terminal.
About Cortex — Making AI systems worthy of reliance; the Foundation builds Cortex Chat, Cortex Code, and Cortex Bot

cortex.foundation/about — the Foundation builds Cortex Chat, Cortex Code, and Cortex Bot.

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The products

Chat works unsigned. Everything else needs an account, so that a guest session can never create a grant, a bot, or a session it could not come back to revoke.

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When to use which

Chat does not run Code’s workspace shell or Bot’s computer. Code sessions are a timeline of work, not a chat transcript. Design canvases are not Chat markdown sidecars. Each product keeps its own shape on purpose — see How Chat works, How Code works, and How Bot works.

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Models

Every product runs on Cortex models. In Chat you pick per conversation from the composer chip: The CLI shows models under English product names — Cortex Mini 1, Cortex 1, Cortex Max 1 — and lets you tune reasoning effort per session. Details: Chat models and CLI modes.

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Language

English is the source of truth for interface copy. The web app is localized into French, Spanish, German, Japanese, Simplified Chinese, Brazilian Portuguese, and Korean; switch under Settings → General → Language. Model prompts stay in English. Product names are never translated.
Cortex Chat home in French — Bonjour, Nouveau chat, Projets, Artefacts, Personnaliser

The same Chat home in French. Product names — Chat, Code, Bot — stay untranslated.

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Hostnames

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Next

  1. Quickstart — a first Chat, then the other surfaces.
  2. Accounts — guest versus member.
  3. Plans — what each plan includes and how quotas behave.
  4. Settings — theme, language, shortcuts, models, privacy.