diff --git a/beacon_node/client/src/metrics.rs b/beacon_node/client/src/metrics.rs
index 605a734688..6ff3eb6a70 100644
--- a/beacon_node/client/src/metrics.rs
+++ b/beacon_node/client/src/metrics.rs
@@ -15,6 +15,13 @@ pub static IS_SYNCED: LazyLock<Result<IntGauge>> = LazyLock::new(|| {
     )
 });
 
+pub static IS_OPTIMISTIC_SYNC: LazyLock<Result<IntGauge>> = LazyLock::new(|| {
+    try_create_int_gauge(
+        "optimistic_sync",
+        "Metric to check if the beacon chain is in optimistic sync mode. 0 if synced and 1 if optimistic sync",
+    )
+});
+
 pub static NOTIFIER_HEAD_SLOT: LazyLock<Result<IntGauge>> = LazyLock::new(|| {
     try_create_int_gauge(
         "notifier_head_slot",
diff --git a/beacon_node/client/src/notifier.rs b/beacon_node/client/src/notifier.rs
index b1cf1bd7f5..52a3b92cb6 100644
--- a/beacon_node/client/src/notifier.rs
+++ b/beacon_node/client/src/notifier.rs
@@ -369,8 +369,12 @@ pub fn spawn_notifier<T: BeaconChainTypes>(
 
                 let block_hash = match beacon_chain.canonical_head.head_execution_status() {
                     Ok(ExecutionStatus::Irrelevant(_)) => "n/a".to_string(),
-                    Ok(ExecutionStatus::Valid(hash)) => format!("{} (verified)", hash),
+                    Ok(ExecutionStatus::Valid(hash)) => {
+                        metrics::set_gauge(&metrics::IS_OPTIMISTIC_SYNC, 0);
+                        format!("{} (verified)", hash)
+                    }
                     Ok(ExecutionStatus::Optimistic(hash)) => {
+                        metrics::set_gauge(&metrics::IS_OPTIMISTIC_SYNC, 1);
                         warn!(
                             info = "chain not fully verified, \
                             block and attestation production disabled until execution engine syncs",