diff --git a/vllm/v1/metrics/stats.py b/vllm/v1/metrics/stats.py
index 4e9db98db0bc..2e06bcfe0b66 100644
--- a/vllm/v1/metrics/stats.py
+++ b/vllm/v1/metrics/stats.py
@@ -194,6 +194,9 @@ class RequestStateStats:
     # Track if this request is corrupted (NaNs in logits)
     is_corrupted: bool = False
 
+    # list of ttit's
+    inter_token_latencies: list[float] = field(default_factory=list)
+
 
 @dataclass
 class FinishedRequestStats:
@@ -283,6 +286,7 @@ def update_from_output(
         else:
             itl = engine_core_timestamp - req_stats.last_token_ts
             self.inter_token_latencies_iter.append(itl)
+            req_stats.inter_token_latencies.append(itl)
 
         req_stats.last_token_ts = engine_core_timestamp