# VoiceSessionCost

> Tracon documentation. Tracon is a .NET package family that adds a control
> plane on Microsoft Agent Framework, published as NuGet packages that run
> inside your own ASP.NET Core application.
>
> Page: https://tracon.dev/http-api/schemas/voicesessioncost/
> Summary: OpenAPI request or response schema for VoiceSessionCost, including required fields, defaults, constraints, and linked nested types.

[← All HTTP schemas](/http-api/schemas/)

What one voice conversation cost.

**Shape:** `object`

| Property | Required | Type | Description | Rules |
|---|---|---|---|---|
| `durationCost` | no | `number (double)` | What the session's duration cost. | pattern `^-?(?:0\\|[1-9]\d*)(?:\.\d+)?$` |
| `characterCost` | no | `number (double)` | What the synthesized characters cost. | pattern `^-?(?:0\\|[1-9]\d*)(?:\.\d+)?$` |
| `currency` | no | `string` | The currency the amounts are in. | — |