# AiUsageDay

object type

One UTC day of YOUR group's AI usage.

## Fields

| Field | Type | Notes |
| --- | --- | --- |
| `day` | [String](/types/#scalars) `String!` | The UTC day (YYYY-MM-DD). |
| `calls` | [Int](/types/#scalars) `Int!` | No further notes. |
| `tokensInput` | [Int](/types/#scalars) `Int!` | No further notes. |
| `tokensOutput` | [Int](/types/#scalars) `Int!` | No further notes. |
| `costUsd` | [String](/types/#scalars) `String!` | The day's platform-key spend — a DECIMAL STRING in USD (nano-dollar exact; the money-string law — never a float). |
| `surfaces` | [AiUsageSurfaceCalls](/types/AiUsageSurfaceCalls/) `[AiUsageSurfaceCalls!]!` | The per-surface split where the day carries it (days that predate the split answer honestly — totals stay whole). |