---
title: "Pricing Calculations"
url: https://docs.catalyst.zoho.com/en/deployment-and-billing/billing/pricing-calculations/
description: "The Billing documentation covers information on the payment models and plans available in Catalyst, as well as steps to set up your payment method, access billing and transaction reports, configure budgets, and more."
last_updated: 2026-08-28T06:26:16Z
service: All Services
type: general
---

# Pricing Calculations

The [**Catalyst Pricing page**](https://catalyst.zoho.com/pricing1.html) contains the latest pricing calculations of each action in a feature or component in every Catalyst service.

Depending on the operation in a specific component, the unit of pricing will vary. For most components, the pricing calculations mentioned in the Pricing Page are self-explanatory. 

For example, the unit of pricing for Circuits in Serverless is *amount/state* transition, which indicates that each transition occurring in every circuit is billed at the specified price. Similarly, the unit of pricing for operations such as a Data Store Insertion, or Cache Get is *amount/request*, which indicates that each request or API call made will be billed at the specified price. Components such as Mail, Push Notifications, or Search are priced in the units of *amount/email* sent, *amount/notifications* sent, *amount/query* executed respectively.

The units of pricing for Serverless [Functions](https://docs.catalyst.zoho.com/en/serverless/help/functions/introduction/) and [AppSail](https://docs.catalyst.zoho.com/en/serverless/help/appsail/introduction/) are **GB-Second** and **GB-Minute** respectively, which are not as straightforward as the other units. Let's discuss these units with an example. Consider the pricing for these units as given below.

#### Functions

**Unit: Executions Per Second**

<table class="content-table">
<thead>
<tr>
<th><strong>Memory</strong></th>
<th><strong>USD Per Second</strong></th>
</tr>
</thead>

<tbody>
<tr>
<td>128 MB</td>
<td>0.000002</td>
</tr>
<tr>
<td>256 MB</td>
<td>0.000004</td>
</tr>
<tr>
<td>512 MB</td>
<td>0.000008</td>
</tr>
</tbody>
</table>

#### AppSail

**Unit: Instances Per Minute**

<table class="content-table">
<thead>
<tr>
<th><strong>Memory</strong></th>
<th><strong>USD Per Minute</strong></th>
</tr>
</thead>

<tbody>

<tr>
<td>256 MB</td>
<td>0.000325</td>
</tr>
<tr>
<td>512 MB</td>
<td>0.00065</td>
</tr>
<tr>
<td>1GB</td>
<td>0.0013</td>
</tr>
<tr>
<td>2GB</td>
<td>0.0026</td>
</tr>
</tbody>
</table>

The table indicates that the cost of a function's execution varies based on the function's configured memory size. For example, a 128 MB function's execution will incur a cost of $0.000002 per second. A single unit of this is considered as 1 GB-Second. That is, USD 0.000002 worth of usage per second for a function execution is 1 GB-Second, for a function of memory size 128 MB.

> **Note:** The hard limits in the free tier allowance specified in terms of GB-Seconds and GB-Minutes units of pricing for functions and AppSail are not cumulative. That is, if 25,000 GB-Seconds are provided for free, it is split overall across all function executions of all memory sizes. It does not indicate that Catalyst provides 25,000 GB-Seconds for 128 MB functions, another 25,000 GB-Seconds for 256 MB functions, and so on.