Estimate tokens before sending (usage preview and confirmation gate)

Large notes, long conversations, or many attachments can use a lot of tokens (cost) in a single send. This feature estimates that before you send and, if needed, asks you to confirm (off by default).

Enable it: Settings (⚙) → AI → "Estimate tokens before sending". When off, nothing is computed (no badge, no confirmation — zero friction, as before).

Live badge: when on, the estimated input tokens appear to the left of the send button (e.g. "~1.2k") and update as you type. This is an approximation on the same scale as the pre-send confirmation: it includes the fixed overhead (instructions, tool definitions, etc.). Right after opening it may briefly show a smaller number until that overhead arrives.

Confirmation gate: on send, if the estimate exceeds your threshold, a prompt appears — "This request will use about N tokens (~$X). Send it?" — with Send / Cancel. Below the threshold it sends without asking (no friction for small requests).

Change the threshold: in the same settings spot, set "Confirmation threshold (tokens)" (default 15000). Lower asks more often; higher asks less.

Cost estimate: when the selected model’s price is known, "~$X" is also shown (input tokens on your own API key; output is not included because it is not known before sending). For models with unknown pricing, only the token count is shown.

Actual tokens consumed after sending are shown below each reply (see "Using chat").