diff --git a/cacheflow/sequence.py b/cacheflow/sequence.py
index 9f140f0b..364f3b2e 100644
--- a/cacheflow/sequence.py
+++ b/cacheflow/sequence.py
@@ -86,6 +86,9 @@ class SequenceGroup:
                 return seq
         raise ValueError(f'Sequence {seq_id} not found.')
 
+    def is_finished(self) -> bool:
+        return all(seq.status == SequenceStatus.FINISHED for seq in self.seqs)
+
     def __repr__(self) -> str:
         return (f'SequenceGroup(group_id={self.group_id}, '
                 f'num_seqs={len(self.seqs)})')