Billing

Billing is per workspace: each workspace has its own plan, seats, and usage, shown under Settings → Billing. If you belong to several workspaces, each is billed independently.

Plans

	Free	Team	Business	Enterprise
Price	$0	per seat	per seat	contract
Seats	up to 3	unlimited	unlimited	unlimited
Storage (pooled)	5 GB	30 GB / seat	100 GB / seat	negotiated
@Web runs / month	50	2,000	10,000	negotiated
AI usage / month	starter cap	high cap	highest cap	negotiated
Custom domain	—	✓	✓	✓

Every workspace starts on Free — no credit card, live immediately on its your-team.knobs.io subdomain.
Team is trial-eligible: full Team entitlements during the trial, and a downgrade back to Free if it ends without payment — nothing is deleted.
Business adds headroom: more storage and AI, priority @Web, higher rate limits.

Seats

A seat is an active workspace member.

On Free, invites beyond 3 members are declined until you upgrade — see Members & invites.
On paid plans, seats adjust automatically: inviting someone adds a prorated seat, removing someone frees it. There’s nothing to reconcile by hand.

Storage

Storage is pooled across the workspace — seats × the per-seat allowance, shared by everyone. It covers Drive files, mail attachments, and doc content.

Approaching the limit is graceful:

At the soft cap, admins see a warning — everything keeps working.
At the hard cap, new uploads and incoming attachments are declined until you free space or upgrade. Existing data always stays readable.

AI and @Web usage

AI features — mail summaries and reply suggestions, @Web research runs, voice — draw from monthly workspace quotas. When a quota is reached, those features pause until the period resets or the plan changes; the rest of the suite is unaffected.

If a payment fails

There’s a grace period while the card is retried. If it still fails, the workspace becomes read-only until the invoice clears — your team can read and export everything, but writes pause. Data is never deleted for non-payment.