---
title: Metrics data properties for GitHub Copilot
shortTitle: Metrics data
intro: 'See how GitHub calculates properties from APIs and reports.'
versions:
  feature: copilot
topics:
  - Copilot
allowTitleToDifferFromFilename: true
---

## `last_activity_at`

> [!NOTE] This data is in {% data variables.release-phases.public_preview %} and subject to change.

The timestamp of a user's most recent interaction with {% data variables.product.prodname_copilot_short %} functionality.

### Surfaces

This property is consistent across the following surfaces:

* The CSV report downloaded from the "Access management" page (see [AUTOTITLE](/copilot/how-tos/administer/organizations/reviewing-activity-related-to-github-copilot-in-your-organization/reviewing-user-activity-data-for-copilot-in-your-organization))
* The [AUTOTITLE](/rest/copilot/copilot-user-management)

### Calculation

The following interactions count as activity:

* Receiving a code suggestion in an IDE
* Chatting with Copilot Chat in an IDE
* Creating or updating a knowledge base
* Creating a pull request summary
* Interacting with Copilot Chat in GitHub
* Interacting with Copilot on a mobile device
* Interacting with Copilot Chat for CLI

The tracked events come from both client- and server-side telemetry, ensuring the timestamp is durable if network conditions affect client-side telemetry.

Processing new telemetry events and updating a user's `last_activity_at` date can take up to 24 hours. Users must have telemetry enabled in their IDE for their usage to be reflected in `last_activity_at`.

### Retention period

* The retention period for `last_activity_at` data is 90 days. This cannot be modified.
* After 90 days of no new activity, a user's `last_activity_at` value is set to `nil`.

For more information, see [Updating retention period for `last_activity_at` values on the Copilot user management API to 90 days](https://github.blog/changelog/2025-01-17-updating-retention-period-for-last_activity_at-values-on-the-user-management-api-public-preview-to-90-days/) on {% data variables.product.prodname_blog %}.

## Copilot activity report

The Copilot activity report shows user activity data for an organization or enterprise.

Data in the report refreshes automatically every 30 minutes.

### Fields

| Field | Description |
|-------|-------------|
| `report_time` | UTC timestamp when the report was generated |
| `login` | GitHub username of the Copilot user |
| `last_authenticated_at` | UTC timestamp of the user's most recent authentication |
| `last_activity_at` | UTC timestamp of the user's most recent Copilot interaction |
| `last_surface_used` | The Copilot feature used most recently:<br><ul><li>**IDE**: Editor name and version (e.g. "VS Code 1.89.1")</li><li>**GitHub.com**: Feature name (e.g., "Copilot Chat")</li><li>**Unspecified**: When IDE details are unavailable or no recent activity exists</ul> |

### Included features

The activity report provides visibility into usage of all generally available (GA) GitHub Copilot features in the IDE, on GitHub, in GitHub CLI, and on GitHub Mobile.

#### IDE features

* Code completions and Next edit suggestions
* Copilot Chat
* Copilot agents

#### GitHub features

* Copilot Chat
* Copilot for Docs
* Knowledge base management
* Copilot pull requests
* Copilot code reviews

### Retention period

Activity and authentication data are retained for a rolling 90-day period, consistent with the `last_activity_at` field.