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

# Billing

LithosAI inference service is prepaid. Each request is metered to the token and debited
from your organization's balance.

## Rates

Each model carries three rates per million tokens: input, cached input and output. Cached
input is a subset of input rather than an addition to it, so a request is charged the input
rate for `prompt_tokens - cached_tokens`, the cached rate for `cached_tokens`, and the
output rate for `completion_tokens`.

## Running out

At a zero balance, requests return 402 with code `insufficient_quota` and `x-should-retry: false`. Top up from the [Billing](https://console.lithosai.cloud/billing) page, between \$5 and \$5,000 a purchase.

## Automatic reload

The platform supports automatic reload. Set a threshold, a target and a monthly cap: when
the balance falls below the threshold we charge your saved card enough to restore the
target, and never more than the cap in one calendar month. If a charge fails, reload
disarms itself and your organization's admins are emailed rather than the card being
retried indefinitely.

## Reporting

Spend and token counts are broken down by day, model and API key on the
[Billing](https://console.lithosai.cloud/billing) and
[Analytics](https://console.lithosai.cloud/analytics) pages.