Every workspace has a plan with an included credit allowance. One credit is charged per rendered file:

• A single-page png/jpeg/pdf render charges 1 credit.
• An allPages png/jpeg render charges once per page produced.
• An allPages pdf render charges 1 credit total — it's one output file, regardless of page count.
• A repeat render that reuses an existing file (see idempotencyKey) charges 0.

Current usage and your plan's limits are always available from GET /v1/me:

"plan": {
  "type": "scale",
  "title": "Scale",
  "credits": { "used": 120, "limit": 2000 },
  "limits": { "members": 10, "workspaces": 3, "rate_per_minute": 600 }
}