diff --git a/caikit/interfaces/nlp/data_model/embedding_vectors.py b/caikit/interfaces/nlp/data_model/embedding_vectors.py
index 30163f142..ec9479e17 100644
--- a/caikit/interfaces/nlp/data_model/embedding_vectors.py
+++ b/caikit/interfaces/nlp/data_model/embedding_vectors.py
@@ -11,10 +11,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-"""Data structures for embedding vector representations
-"""
+"""Data structures for embedding vector representations"""
+
 # Standard
 from dataclasses import dataclass
+from typing import Optional
 
 # First Party
 from py_to_proto.dataclass_to_proto import Annotated, FieldNumber
@@ -36,6 +37,7 @@ class EmbeddingResult(DataObjectBase):
 
     result: Annotated[Vector1D, FieldNumber(1)]
     producer_id: Annotated[ProducerId, FieldNumber(2)]
+    input_token_count: Annotated[Optional[int], FieldNumber(3)]
 
 
 @dataobject(package="caikit_data_model.caikit_nlp")
@@ -45,3 +47,4 @@ class EmbeddingResults(DataObjectBase):
 
     results: Annotated[ListOfVector1D, FieldNumber(1)]
     producer_id: Annotated[ProducerId, FieldNumber(2)]
+    input_token_count: Annotated[Optional[int], FieldNumber(3)]
diff --git a/caikit/interfaces/nlp/data_model/reranker.py b/caikit/interfaces/nlp/data_model/reranker.py
index be700cafe..5844169dc 100644
--- a/caikit/interfaces/nlp/data_model/reranker.py
+++ b/caikit/interfaces/nlp/data_model/reranker.py
@@ -54,6 +54,7 @@ class RerankResult(DataObjectBase):
 
     result: Annotated[RerankScores, FieldNumber(1)]
     producer_id: Annotated[ProducerId, FieldNumber(2)]
+    input_token_count: Annotated[Optional[int], FieldNumber(3)]
 
 
 @dataobject(package="caikit_data_model.caikit_nlp")
@@ -64,3 +65,4 @@ class RerankResults(DataObjectBase):
 
     results: Annotated[List[RerankScores], FieldNumber(1)]
     producer_id: Annotated[ProducerId, FieldNumber(2)]
+    input_token_count: Annotated[Optional[int], FieldNumber(3)]
diff --git a/caikit/interfaces/nlp/data_model/sentence_similarity.py b/caikit/interfaces/nlp/data_model/sentence_similarity.py
index 5c908a1dc..20fabd0d9 100644
--- a/caikit/interfaces/nlp/data_model/sentence_similarity.py
+++ b/caikit/interfaces/nlp/data_model/sentence_similarity.py
@@ -11,10 +11,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-"""Data structures for embedding vector representations
-"""
+"""Data structures for embedding vector representations"""
+
 # Standard
-from typing import List
+from typing import List, Optional
 
 # First Party
 from py_to_proto.dataclass_to_proto import Annotated, FieldNumber
@@ -42,6 +42,7 @@ class SentenceSimilarityResult(DataObjectBase):
 
     result: Annotated[SentenceSimilarityScores, FieldNumber(1)]
     producer_id: Annotated[ProducerId, FieldNumber(2)]
+    input_token_count: Annotated[Optional[int], FieldNumber(3)]
 
 
 @dataobject(package="caikit_data_model.caikit_nlp")
@@ -50,3 +51,4 @@ class SentenceSimilarityResults(DataObjectBase):
 
     results: Annotated[List[SentenceSimilarityScores], FieldNumber(1)]
     producer_id: Annotated[ProducerId, FieldNumber(2)]
+    input_token_count: Annotated[Optional[int], FieldNumber(3)]
diff --git a/tests/interfaces/nlp/test_reranker.py b/tests/interfaces/nlp/test_reranker.py
index 16840ef25..8d916c6fc 100644
--- a/tests/interfaces/nlp/test_reranker.py
+++ b/tests/interfaces/nlp/test_reranker.py
@@ -11,8 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-"""Test for reranker
-"""
+"""Test for reranker"""
 
 # Standard
 import random
@@ -100,12 +99,18 @@ def input_scores2(input_random_score, input_random_score_3):
 
 @pytest.fixture
 def input_result_1(input_scores):
-    return {"result": dm.RerankScores(query="foo", scores=input_scores)}
+    return {
+        "result": dm.RerankScores(query="foo", scores=input_scores),
+        "input_token_count": 0,
+    }
 
 
 @pytest.fixture
 def input_result_2(input_scores2):
-    return {"result": dm.RerankScores(query="bar", scores=input_scores2)}
+    return {
+        "result": dm.RerankScores(query="bar", scores=input_scores2),
+        "input_token_count": 0,
+    }
 
 
 @pytest.fixture
@@ -114,7 +119,8 @@ def input_results(input_scores, input_scores2):
         "results": [
             dm.RerankScores(query="foo", scores=input_scores),
             dm.RerankScores(query="bar", scores=input_scores2),
-        ]
+        ],
+        "input_token_count": 0,
     }
 
 
@@ -125,7 +131,10 @@ def input_sentence_similarity_scores_1():
 
 @pytest.fixture
 def input_sentence_similarity_result(input_sentence_similarity_scores_1):
-    return {"result": dm.SentenceSimilarityScores(**input_sentence_similarity_scores_1)}
+    return {
+        "result": dm.SentenceSimilarityScores(**input_sentence_similarity_scores_1),
+        "input_token_count": 0,
+    }
 
 
 @pytest.fixture
@@ -145,7 +154,7 @@ def input_sentence_similarities_scores(
 
 @pytest.fixture
 def input_sentence_similarity_results(input_sentence_similarities_scores):
-    return {"results": input_sentence_similarities_scores}
+    return {"results": input_sentence_similarities_scores, "input_token_count": 0}
 
 
 ## Tests ########################################################################
@@ -162,7 +171,7 @@ def input_sentence_similarity_results(input_sentence_similarities_scores):
         (dm.SentenceSimilarityResults, "input_sentence_similarity_results"),
     ],
 )
-def test_data_object(data_object, inputs, request):
+def test_data_object(data_object, inputs, request: pytest.FixtureRequest):
     # Init data object
     fixture_values = request.getfixturevalue(inputs)
     new_do_from_init = data_object(**fixture_values)