Choose which model drafts, which one reviews, and the Anthropic key the reviewer uses. Anything you leave unset falls back to the Vercel environment variables, then to the built-in defaults.
Used by Claude models (the reviewer by default). The key is tested before it is saved, stored encrypted, and never shown again: only its last four characters. Remove it to go back to ANTHROPIC_API_KEY from Vercel.
When this is off, nothing a chemist enters is stored on the server: work stays in their browser and in the Excel copies they download. When it is on, each session is also saved on the server, compressed and encrypted, so it is not lost when a browser is cleared and can be opened on another computer. Everyone with the access code sees the team's saved sessions. Turn it on only once ITW has agreed to their work being stored.