Which agent, which account
Claude Code, Codex or Gemini: how each one signs in, what you need, and where to change the choice.
The agent is the program that does the work on your computer (or in a Codespace): it reads code, writes files and runs commands. Coden supports three. You change the choice in Settings → Agent. It applies to the next tasks.
Claude Code
Sign in with a Claude subscription, or with an API key from the Anthropic console. The model and effort level are chosen in the app and apply to all later turns until you change them.
Codex
Sign in with a ChatGPT account, or with an API key from OpenAI. Sign-in uses a device code that you confirm in a browser.
Gemini
Sign in with a Google account, or with a Google AI API key. The key is kept once per device, not in every project.
Each provider has its own terms and prices. The account or subscription is a contract between you and the provider, not with us. See the Terms of Use, section 6.
Stuck somewhere other than what is here? Write to support@coden-app.com.