> ## Documentation Index
> Fetch the complete documentation index at: https://docs.aiybiz.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Subscription & billing

> Managing your subscription and understanding charges.

## How billing works

Aiybiz uses a **per-seat subscription** model. Your company pays a monthly or annual fee per user seat. Sessions are included — there are no per-hour charges or wallet top-ups.

## Plans

Each plan defines:

* **Price per seat** — monthly or annual
* **Concurrent session limit** — how many sessions can run simultaneously per seat (`maxActiveSessions`)

## Managing your subscription

<Steps>
  <Step title="Go to Subscription">
    Navigate to **Settings → Subscription** (admin members only).
  </Step>

  <Step title="Choose a plan or change seats">
    Select a plan or adjust your seat count. Changes are prorated by Stripe.
  </Step>

  <Step title="Complete payment">
    A Stripe payment form opens. Enter your card details and confirm.
  </Step>
</Steps>

## Seat count

Your current seat count and plan are shown in **Settings → Subscription**. Only company admins can add or remove seats.

## Session limit

The concurrent session limit is `plan.maxActiveSessions × seats`. When you reach the limit, start a new session by ending an active one.

## Invoices

Stripe generates an invoice for each billing cycle. These are accessible directly from Stripe's customer portal, linked from **Settings → Subscription**.

## Cancellation

Cancel anytime from **Settings → Subscription**. Your subscription remains active until the end of the current billing period.

<Tip>
  Downgrade before cancelling if you want to reduce costs but keep access.
</Tip>