diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6bedc274964..5f424a03100 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,7 @@
 - Produce Span V2 Kafka messages. ([#5151](https://github.com/getsentry/relay/pull/5151), [#5173](https://github.com/getsentry/relay/pull/5173), [#5199](https://github.com/getsentry/relay/pull/5199))
 - Extract additional `user.geo.*` attributes on spans. ([#5194](https://github.com/getsentry/relay/pull/5194))
 - Modernize session processing and move to Relay's new processing framework. ([#5201](https://github.com/getsentry/relay/pull/5201))
+- Add TraceMetric data category. ([#5206](https://github.com/getsentry/relay/pull/5206))
 
 ## 25.9.0
 
diff --git a/py/CHANGELOG.md b/py/CHANGELOG.md
index 3329b9fa556..c0abf8c89cb 100644
--- a/py/CHANGELOG.md
+++ b/py/CHANGELOG.md
@@ -6,6 +6,7 @@
 - Add InstallableBuild and SizeAnalysis data categories. ([#5084](https://github.com/getsentry/relay/pull/5084))
 - Add `retentions` to the project configuration. ([#5135](https://github.com/getsentry/relay/pull/5135))
 - Normalization: Trim event tag keys & values to 200 chars instead of dropping them. ([#5198](https://github.com/getsentry/relay/pull/5198))
+- Add TraceMetric data category. ([#5206](https://github.com/getsentry/relay/pull/5206))
 
 ## 0.9.16
 
diff --git a/py/sentry_relay/consts.py b/py/sentry_relay/consts.py
index 76dfeb110fc..d01dff5dd74 100644
--- a/py/sentry_relay/consts.py
+++ b/py/sentry_relay/consts.py
@@ -43,6 +43,7 @@ class DataCategory(IntEnum):
     PREVENT_REVIEW = 30
     SIZE_ANALYSIS = 31
     INSTALLABLE_BUILD = 32
+    TRACE_METRIC = 33
     UNKNOWN = -1
     # end generated
 
diff --git a/relay-base-schema/src/data_category.rs b/relay-base-schema/src/data_category.rs
index 86b4b2b2143..53c3fd80a51 100644
--- a/relay-base-schema/src/data_category.rs
+++ b/relay-base-schema/src/data_category.rs
@@ -146,6 +146,10 @@ pub enum DataCategory {
     /// artifacts are downloaded for installation.
     /// When enabled there will typically be one 'InstallableBuild' per uploaded artifact.
     InstallableBuild = 32,
+    /// TraceMetric
+    ///
+    /// This is the data category to count the number of trace metric items.
+    TraceMetric = 33,
     //
     // IMPORTANT: After adding a new entry to DataCategory, go to the `relay-cabi` subfolder and run
     // `make header` to regenerate the C-binding. This allows using the data category from Python.
@@ -195,6 +199,7 @@ impl DataCategory {
             "prevent_review" => Self::PreventReview,
             "size_analysis" => Self::SizeAnalysis,
             "installable_build" => Self::InstallableBuild,
+            "trace_metric" => Self::TraceMetric,
             _ => Self::Unknown,
         }
     }
@@ -236,6 +241,7 @@ impl DataCategory {
             Self::PreventReview => "prevent_review",
             Self::SizeAnalysis => "size_analysis",
             Self::InstallableBuild => "installable_build",
+            Self::TraceMetric => "trace_metric",
             Self::Unknown => "unknown",
         }
     }
@@ -338,6 +344,7 @@ impl TryFrom<u8> for DataCategory {
             30 => Ok(Self::PreventReview),
             31 => Ok(Self::SizeAnalysis),
             32 => Ok(Self::InstallableBuild),
+            33 => Ok(Self::TraceMetric),
             other => Err(UnknownDataCategory(other)),
         }
     }
@@ -352,10 +359,7 @@ mod tests {
         // If this test fails, update the numeric bounds so that the first assertion
         // maps to the last variant in the enum and the second assertion produces an error
         // that the DataCategory does not exist.
-        assert_eq!(
-            DataCategory::try_from(32),
-            Ok(DataCategory::InstallableBuild)
-        );
-        assert_eq!(DataCategory::try_from(33), Err(UnknownDataCategory(33)));
+        assert_eq!(DataCategory::try_from(33), Ok(DataCategory::TraceMetric));
+        assert_eq!(DataCategory::try_from(34), Err(UnknownDataCategory(34)));
     }
 }
diff --git a/relay-cabi/include/relay.h b/relay-cabi/include/relay.h
index 05540771902..222021b7da7 100644
--- a/relay-cabi/include/relay.h
+++ b/relay-cabi/include/relay.h
@@ -211,6 +211,12 @@ enum RelayDataCategory {
    * When enabled there will typically be one 'InstallableBuild' per uploaded artifact.
    */
   RELAY_DATA_CATEGORY_INSTALLABLE_BUILD = 32,
+  /**
+   * TraceMetric
+   *
+   * This is the data category to count the number of trace metric items.
+   */
+  RELAY_DATA_CATEGORY_TRACE_METRIC = 33,
   /**
    * Any other data category not known by this Relay.
    */
diff --git a/relay-quotas/src/quota.rs b/relay-quotas/src/quota.rs
index f4c35fffde8..dad3d279bb3 100644
--- a/relay-quotas/src/quota.rs
+++ b/relay-quotas/src/quota.rs
@@ -216,7 +216,8 @@ impl CategoryUnit {
             | DataCategory::PreventReview
             | DataCategory::Session
             | DataCategory::SizeAnalysis
-            | DataCategory::InstallableBuild => Some(Self::Count),
+            | DataCategory::InstallableBuild
+            | DataCategory::TraceMetric => Some(Self::Count),
             DataCategory::Attachment | DataCategory::LogByte => Some(Self::Bytes),
             DataCategory::ProfileDuration | DataCategory::ProfileDurationUi => {
                 Some(Self::Milliseconds)