diff --git a/optimum/exporters/onnx/model_configs.py b/optimum/exporters/onnx/model_configs.py
index e77f649f69..4f5e47d5df 100644
--- a/optimum/exporters/onnx/model_configs.py
+++ b/optimum/exporters/onnx/model_configs.py
@@ -290,6 +290,11 @@ class GemmaOnnxConfig(LlamaOnnxConfig):
     pass
 
 
+class GraniteOnnxConfig(LlamaOnnxConfig):
+    MIN_TRANSFORMERS_VERSION = version.parse("4.45.0")
+    MIN_TORCH_VERSION = version.parse("2.5.0")
+
+
 class PhiOnnxConfig(TextDecoderWithPositionIdsOnnxConfig):
     DEFAULT_ONNX_OPSET = 14  # Phi now uses F.scaled_dot_product_attention by default for torch>=2.1.1.
     NORMALIZED_CONFIG_CLASS = NormalizedTextConfig
diff --git a/optimum/exporters/onnx/utils.py b/optimum/exporters/onnx/utils.py
index 675566ba23..8df5ee4258 100644
--- a/optimum/exporters/onnx/utils.py
+++ b/optimum/exporters/onnx/utils.py
@@ -86,6 +86,7 @@
     "phi",
     "phi3",
     "qwen2",
+    "granite",
 }
 
 
diff --git a/optimum/exporters/tasks.py b/optimum/exporters/tasks.py
index a489f34fb0..fdc8bfcb53 100644
--- a/optimum/exporters/tasks.py
+++ b/optimum/exporters/tasks.py
@@ -915,6 +915,13 @@ class TasksManager:
             "text-classification",
             onnx="LlamaOnnxConfig",
         ),
+        "granite": supported_tasks_mapping(
+            "feature-extraction",
+            "feature-extraction-with-past",
+            "text-generation",
+            "text-generation-with-past",
+            onnx="GraniteOnnxConfig",
+        ),
         "pegasus": supported_tasks_mapping(
             "feature-extraction",
             "feature-extraction-with-past",
diff --git a/optimum/onnxruntime/modeling_decoder.py b/optimum/onnxruntime/modeling_decoder.py
index bda3ec98d9..8e431a9f06 100644
--- a/optimum/onnxruntime/modeling_decoder.py
+++ b/optimum/onnxruntime/modeling_decoder.py
@@ -340,7 +340,7 @@ def prepare_past_key_values(
             if self.model_type == "gemma":
                 num_attention_heads = self.normalized_config.num_key_value_heads
                 embed_size_per_head = self.normalized_config.head_dim
-            elif self.model_type in {"mistral", "llama", "qwen2"}:
+            elif self.model_type in {"mistral", "llama", "qwen2", "granite"}:
                 num_attention_heads = self.normalized_config.num_key_value_heads
             else:
                 num_attention_heads = self.normalized_config.num_attention_heads
diff --git a/optimum/onnxruntime/utils.py b/optimum/onnxruntime/utils.py
index 128e2406f1..9e92e0bd32 100644
--- a/optimum/onnxruntime/utils.py
+++ b/optimum/onnxruntime/utils.py
@@ -128,6 +128,7 @@ class ORTConfigManager:
         "gpt-neo": "gpt2",
         "gpt-neox": "gpt2",
         "gptj": "gpt2",
+        "granite": "gpt2",
         # longt5 with O4 results in segmentation fault
         "longt5": "bert",
         "llama": "gpt2",
diff --git a/optimum/utils/normalized_config.py b/optimum/utils/normalized_config.py
index 81207b7649..9ceed24c2d 100644
--- a/optimum/utils/normalized_config.py
+++ b/optimum/utils/normalized_config.py
@@ -281,6 +281,7 @@ class NormalizedConfigManager:
         "xlm-roberta": NormalizedTextConfig,
         "yolos": NormalizedVisionConfig,
         "qwen2": NormalizedTextConfig,
+        "granite": NormalizedTextConfigWithGQA,
     }
 
     @classmethod
diff --git a/tests/exporters/exporters_utils.py b/tests/exporters/exporters_utils.py
index c8a33b0be3..ccccb5510b 100644
--- a/tests/exporters/exporters_utils.py
+++ b/tests/exporters/exporters_utils.py
@@ -100,6 +100,7 @@
     "gpt-neo": "hf-internal-testing/tiny-random-GPTNeoModel",
     "gpt-neox": "hf-internal-testing/tiny-random-GPTNeoXForCausalLM",
     "gptj": "hf-internal-testing/tiny-random-GPTJModel",
+    "granite": "hf-internal-testing/tiny-random-GraniteForCausalLM",
     "groupvit": "hf-internal-testing/tiny-random-groupvit",
     "ibert": "hf-internal-testing/tiny-random-IBertModel",
     "imagegpt": "hf-internal-testing/tiny-random-ImageGPTModel",
diff --git a/tests/onnxruntime/test_modeling.py b/tests/onnxruntime/test_modeling.py
index 33243da278..6819ed938d 100644
--- a/tests/onnxruntime/test_modeling.py
+++ b/tests/onnxruntime/test_modeling.py
@@ -2311,6 +2311,7 @@ class ORTModelForCausalLMIntegrationTest(ORTModelTestMixin):
         "gpt_neo",
         "gpt_neox",
         "gptj",
+        "granite",
         "llama",
         "mistral",
         "mpt",
diff --git a/tests/onnxruntime/utils_onnxruntime_tests.py b/tests/onnxruntime/utils_onnxruntime_tests.py
index 5071d0081a..ca0b7151b6 100644
--- a/tests/onnxruntime/utils_onnxruntime_tests.py
+++ b/tests/onnxruntime/utils_onnxruntime_tests.py
@@ -104,6 +104,7 @@
     "gpt_neo": "hf-internal-testing/tiny-random-GPTNeoModel",
     "gpt_neox": "hf-internal-testing/tiny-random-GPTNeoXForCausalLM",
     "gptj": "hf-internal-testing/tiny-random-GPTJForCausalLM",
+    "granite": "hf-internal-testing/tiny-random-GraniteForCausalLM",
     "groupvit": "hf-internal-testing/tiny-random-groupvit",
     "hubert": "hf-internal-testing/tiny-random-HubertModel",
     "ibert": "hf-internal-testing/tiny-random-IBertModel",