---
title: "Billing and usage"
description: "How TIR GenAI API measures and bills a call, and where to see your usage and pricing in the portal."
content_type: "concept"
product: "genai-api"
platform: "TIR"
url: "/tir/genai-api/concepts/billing-and-usage/"
---

# Billing and usage

GenAI API bills you for what you use, measured from what you send and receive. You pay nothing
upfront: there is no setup charge, reserved capacity, or long-term commitment.

## How a call is billed

Each model is billed by a unit that suits its task, rather than a flat amount per request:

- A text or embedding model is billed on its input and output tokens rather than the number of
  requests. A single request can use many tokens.
- An image-generation model is billed on its inference steps.
- A speech model is billed on its output tokens or its audio duration.

Each model sets its own rate for its billable unit. A model with no billable unit set shows
**Pricing not available** in place of a price. No model is labelled **Free**.

## See your usage and pricing in the portal

Open a model's page and select **Usage** to see its total tokens used, its input and output tokens
separately, and the estimated cost for each. You can filter it by the current month or a custom
date range. **Check Pricing** opens the model's **Pricing** tab on the same page.

For current rates, see [E2E Networks pricing](https://www.e2enetworks.com/pricing).

To choose a model and how to call it, see
[Models and calling methods](/tir/genai-api/concepts/models-and-calling-methods/). For short
answers on specific charges, see the [TIR GenAI API FAQ](/tir/genai-api/faq/).