diff --git a/src/telemetry/prometheus/metrics.py b/src/telemetry/prometheus/metrics.py
index c70d8098..c8394228 100644
--- a/src/telemetry/prometheus/metrics.py
+++ b/src/telemetry/prometheus/metrics.py
@@ -562,7 +562,7 @@ class PrometheusMetrics:
             # ai: embed_now fast path runs as an API-process background task
             self._touch(embed_now_tasks_shed_counter)
             self.set_embed_now_tasks_in_flight(0)
-            # ai: the deriver-work gauges are API-only; the deriver never sets them
+
             self.set_deriver_metrics()
             self.set_deriver_outstanding_work(seconds=0)
             self.set_dreams_due(count=0)
diff --git a/tests/telemetry/test_metric_zero_init.py b/tests/telemetry/test_metric_zero_init.py
index 3fa0e318..69b8f7ec 100644
--- a/tests/telemetry/test_metric_zero_init.py
+++ b/tests/telemetry/test_metric_zero_init.py
@@ -131,7 +131,6 @@ def test_deriver_token_combos_are_valid_and_complete():
     ) not in ingestion
 
 
-# ai: API-only; a deriver-exported 0 would read as "no work" on a series it never measures. message_embeddings_pending is absent because both processes report it
 _API_DERIVER_METRIC_GAUGES = (
     "deriver_outstanding_work_seconds",
     "deriver_queue_work_units_eligible",