# Amazon Q Business chat metrics
<a name="qbusiness-metrics-chat"></a>

The following table shows the [Chat and conversation management](conversation-api.md) metrics that Amazon Q Business sends to CloudWatch in real time. 


| Metric name | Unit | Description | 
| --- | --- | --- | 
|  `ActionErrorCount`  |  Count  |  The number of errors because of actions. Valid dimensions: `ApplicationId`, `PluginId`  | 
|  `ActionInvocationCount`  |  Count  |  The number of actions invoked. Valid dimensions: `ApplicationId`, `PluginId`  | 
|  `BlockedChatMessages`  |  Count  | The number of chat messages that were blocked by Amazon Q Business due to an admin guardrail configuration. For example, a `BlockedTopic` or `Blocked Phrase`. .  Valid dimensions: `ApplicationId`  | 
|  `ChatMessages`  |  Count  |  The number of chat messages This metric is emitted every time a chat message is processed. Valid dimensions: `ApplicationId`  | 
|  `ChatMessagesWithAttachment`  |  Count  |  The number of chat messages with file uploads. Valid dimensions: `ApplicationId`  | 
|  `ChatMessagesWithNoAnswer`  |  Count  |  The number of chat messages that resulted in no answer.  Valid dimensions: `ApplicationId`  | 
|  `HallucinatedChatMessages`  |  Count  |  The number of system-generated chat messages with hallucination.  You can create a hallucination rate metric by combining this metric with the `ChatMessages` metric.  Valid dimensions: `ApplicationId`  | 
|  `TimeToFirstToken`  |  Milliseconds  |  The time taken to generate the first token in a chat response. This metric measures the initial response latency for chat interactions. Valid dimensions: `API name`, `ApplicationId`  | 
|  `Latency`  |  Milliseconds  |  The total time taken to complete a chat API request from start to finish. This metric measures the end-to-end response time for chat interactions. Valid dimensions: `API name`, `ApplicationId`  | 
|  `DailyActiveUsers`  |  Count  |  The number of active users from the previous day.  This metric is calculated using the *Maximum* statistic. For more information, see [CloudWatch statistics definitions](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Statistics-definitions.html).  Valid dimensions: `ApplicationId`  | 
|  `MonthlyActiveUsers`  |  Count  |  The total number of unique month-to-date active users. This metric will be calculated from the 00:00 UTC on the first day of the month till 00:00 UTC from the current day.  This metric is calculated using the *Maximum* statistic. For more information, see [CloudWatch statistics definitions](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Statistics-definitions.html).  Valid dimensions: `ApplicationId`  | 
|  `WeeklyActiveUsers`  |  Count  |  The total number of unique week-to-date active users. This metric will be calculated from 00:00 UTC on Sunday till 00:00 UTC from the current day.  This metric is calculated using the *Maximum* statistic. For more information, see [CloudWatch statistics definitions](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Statistics-definitions.html).  Valid dimensions: `ApplicationId`  | 
|  `NewConversations`  |  Count  |  The number of new conversations started.  Valid dimensions: `ApplicationId`  | 
|  `ThumbsDownCount`  |  Count  |  The feedback count for thumbs down. Valid dimensions: `ApplicationId`, `UsefulnessReason`  | 
|  `ThumbsUpCount`  |  Count  |  The feedback count for thumbs up. Valid dimensions: `ApplicationId`, `UsefulnessReason`  |