### Not sure how many credits you need?

We understand it can be hard to estimate how many iTwin Platform credits you will need as you are getting started. We can assist you in estimating your iTwin Platform credit usage or answering any questions you may have. Click **Contact us**, fill out the contact form and we'll be happy to help.


**When do I need a paid subscription?** 
You need a paid subscription when you want to exceed the usage limits of the Trial. You also need a paid subscription for any application you want to use in production.

**How many apps and end users can I have?** 
There is no limit to the number of applications you can register or the number of end users for your applications.

**Does my iTwin Platform subscription auto-renew?** 
Yes, the subscription will automatically renew based on your invoicing period. Please see your subscription agreement for details on cancelling your subscription.

**What happens if I exceed my monthly credit allocation?** 
Not to worry, you will still be able to access the iTwin Platform services even if you exceed your monthly credit allocation (and you won't get a surprise bill in the mail for the additional usage). We will contact you to discuss future usage and ensure you have a subscription that is aligned with your evolving needs.

**What happens if I do not use all the iTwin Platform credits in my monthly subscription?** 
The iTwin Platform credits do not roll over at this time and any unused credits will no longer be available. If you have a balance left at the end of each month, we can work with you to find a subscription that better suits your needs.

**What does premium / enterprise support mean?** 
Premium and enterprise support are provided to help you scale your business. Premium support includes access to our Developer Success team who can assist with design sessions and architectural reviews to help you optimize your use of the iTwin Platform. Enterprise support adds to premium support and includes a dedicated Development Success Manager and hackathons.

**Can I use iTwin Platform credits to pay for other Bentley software and services?** 
No, not at this time.

**What happens if I use a partial credit?** 
At the end of each invoicing period, your total iTwin Platform credit usage (for all applications registered under your subscription) will be totaled and rounded up to a whole credit. In the case that you have a total that includes a partial credit (for example 1,983.45 credits) we will round up to the nearest credit (for example 1,984 credits).

**How is file storage consumption calculated?** 
Consumption of file storage for the Storage and Reality Management APIs is based on the peak usage for the month. Your consumption value may not be reflected accurately when running reports for a partial month.

Manage Access Controls for your iTwin member using iTwin roles and permissions.

access-control-v2

itwins

Interact with your projects.

View, update, create, and delete projects.


projects

users

iModelHub is the control center for iModels. It is responsible for coordinating concurrent access to iModels as well as changes made to them in a form of [Changesets](https://www.itwinjs.org/learning/glossary/#changeset).

Overview of [iModelHub](https://www.itwinjs.org/learning/imodelhub/) and [iModels](https://www.itwinjs.org/learning/imodels/).

These APIs lets you retrieve metadata about the iModels pushed to iModelHub. To view, create or update your iModels use [iTwin.js](https://www.itwinjs.org/) client libraries.


imodels-v2

Digital Library to manage digital components

Digital component library and catalog management service.  It allows users to efficiently manage and distribute their digital component libraries, providing their designers with approved, proprietary components as well as approved manufacturer's content. 


library

Interact with your reality data.

View, update, create, and delete reality data.


reality-data


The Saved Views API provides a central place to store view information so it can be retrieved or shared across applications.


savedviews

The Sensor Data Service (SDS) provides a unified method for retrieving time series sensor data (and related metadata) within iTwin and other platforms. The SDS simplifies the process of connecting sensor data from sources including IoT Devices, IaaS IoT Hubs, Enterprise Systems, and other generic repositories. Availability of this data enables developers, vendors, and users to develop OT workflows to create new use cases for digital twins in their products.


sensor-data

Storage API allowing quick files managing

storage

The Webhooks API allows you to subscribe to events happening in iTwin Platform.

### Supported event sources

- iModels events


webhooks

# Changed Elements

The Changed Elements API provides consumers with the elements that have changed in an iModel between two changesets. This API has four operations:

1. Enable Change Tracking
2. Get Change Tracking
3. Get Comparison
4. Get Changesets

Before obtaining a comparison, it is necessary to enable change tracking of an iModel. This means that the API will be listening to the following events:
1. New Named Version Created
2. Changeset Group Completed

When any of those events trigger, the API will process the new changes and store a summary of all the elements that have changed.

After tracking is enabled and the iModel is processed, the comparison endpoint may be used to query for a summary of changed elements between any two given `ChangeSets`.

changed-elements

Forms Service

View, create, and edit details of forms that have been filled out in a project, as well as their comments, attached files, and change history.  Full CRUD functionality is available for form data, with form definitions being available in a read-only context.

Note that throughout this API the terms "form" (by itself) and "form data" both refer to the same thing: data collected from users (generally entered into controls of a UI, or programmatically generated). By contrast, a "form definition" is a piece of metadata connected to form data instances. It determines the "type" of form that is filled out, and in applications that support custom form layouts, it determines how the controls are placed in the user interface.

Form definitions should be added, imported, and customized by project administrators through the Bentley Form Manager web application; they cannot be modified using this API. The app can be found at https://connect-formmanager.bentley.com/ManageForms.aspx?projectId=yourProjectId where `yourProjectId` is replaced by the ID of the project being customized.

## Limits

All API calls that return a list of results will return a maximum of 50 results. Some endpoints support a `$top` parameter to specify a number of results to retrieve (up to the maximum) and a `continuationToken` parameter to continue paging through results, allowing access to results beyond the first 50. These parameters will be included in the documentation for those endpoints.

Clients with a Basic, Premium, or Enterprise subscription will be limited to 5000 requests per minute. Clients with a Trial subscription will be limited to 500 requests per minute.

forms

Issue Service

View, create, and edit details of issues that have been raised in a CONNECT project or context, as well as their comments, attached files, and change history.  Retrieval of form definitions (which define how to display an issue in an interactive UI) is also supported, though customization of them is not, and should be done by a project administrator through the CONNECT Issues web application, if needed. This form-editing app can be found at https://connect-formmanager.bentley.com/ManageForms.aspx?projectId=yourProjectId where `yourProjectId` is replaced by the ID of the project you're creating custom forms for.

## Limits

All API calls that return a list of results will return a maximum of 50 results. Some endpoints support a `$top` parameter to specify a number of results to retrieve (up to the maximum) and a `continuationToken` parameter to continue paging through results, allowing access to results beyond the first 50. These parameters will be included in the documentation for those endpoints.

Clients with a Basic, Premium, or Enterprise subscription will be limited to 5000 requests per minute. Clients with a Trial subscription will be limited to 500 requests per minute.

issues-v1

Interact with your jobs and workspaces for Reality Modeling

Create, update, delete jobs and workspaces.

contextcapture

Interact with your data analysis jobs.

Create, update, delete jobs.

realitydataanalysis

Convert mentioned point cloud formats to web-friendly Orbit Point Cloud.

realityconversion

reality-management

Access iTwin data integrations with Carbon Calculation solutions for Embodied Carbon, Life Cycle Assessments, and more.

carbon-calculation

Access Design Element Classification machine learning model.  
Create and manage classification runs.

designelementclassification

Access iModels data using OData v4 interface

imodels-odata

Reporting is a resource for aggregating iTwin data to build custom dashboards and integrate iTwin data with your business applications.

- Create digitial twin based reports which can be consumed through business intelligence applications such as Power BI.
- Leverage the OData feed Data Access to generate reports by combining data from multiple data streams in the digital twin.

insights-v2

Export API is a cloud-based API meant to export the data from the iModels to other standard formats such as IFC or LandXML. It allows users export data from iModels which are hosted in Bentley's iModelHub to an IFC or LandXML file.

export

mesh-export

Recognize symbols and tags from a raster PnID.

pnid-to-itwin-v2

iModel Connections API is a cloud-based synchronization API meant to synchronize the data in Input Files and iModels. It allows users to establish links from their design files to iModels, hosted in Bentley's iModelHub. Users can synchronize updates to their design files.

synchronization

iModel transformations service

Perform transformations on iModels.


transformations

The Clash Detection API allows you to manage clash detection suppression rules, tests, runs, and results. You can run tests and monitor the progress.

clash-detection

The Property Validation API allows you to manage property value validation rules, tests, runs, and results. You can run tests and monitor the progress.

validation

visualization

Learn about the iTwin Platform at your own pace.

#### **Access all iTwin Platform services**

#### **Includes 1 GB of cloud data and 50GB of reality data storage \*\***

#### **Community Support**


Perfect for those building their first application and introducing it to market.

#### **Access all iTwin Platform services**

#### **Includes 250 GB of cloud data and 50GB of reality data storage \*\***

#### **Community Support**

#### **Invoiced Monthly**

#### **$1.00 per credit**


As your business grows, the iTwin Platform scales with you. Use more, pay less.

#### **Access all iTwin Platform services**

#### **Includes 1 TB of cloud data and 50GB of reality data storage \*\***

#### **Premium Support**

#### **Invoiced Monthly**

#### **$0.90 per credit**


Build a plan customized for your design and commercial needs with flexible invoicing.

#### **Access all iTwin Platform services**

#### **Storage based on your needs**

#### **Enterprise Support**

#### **Flexible Invoicing Terms**

#### **Pricing negotiable**


### Why iTwin Platform credits?

iTwin Platform credits provide you with the flexibility to start your project small and grow it along with your business. Credits allow you to pay for the usage of any iTwin Platform service removing the overhead of setting up separate subscriptions for each service.
