diff --git a/optimum/exporters/openvino/convert.py b/optimum/exporters/openvino/convert.py
index 4614d9368..0d6c2b436 100644
--- a/optimum/exporters/openvino/convert.py
+++ b/optimum/exporters/openvino/convert.py
@@ -1013,11 +1013,10 @@ def _get_submodels_and_export_configs(
 def get_diffusion_models_for_export_ext(
     pipeline: "DiffusionPipeline", int_dtype: str = "int64", float_dtype: str = "fp32", exporter: str = "openvino"
 ):
-<<<<<<< HEAD
     is_sdxl = pipeline.__class__.__name__.startswith("StableDiffusionXL")
     is_sd3 = pipeline.__class__.__name__.startswith("StableDiffusion3")
     is_flux = pipeline.__class__.__name__.startswith("Flux")
-    is_sana =  pipeline.__class__.__name__.startswith("Sana")
+    is_sana = pipeline.__class__.__name__.startswith("Sana")
     is_sd = pipeline.__class__.__name__.startswith("StableDiffusion") and not is_sd3
     is_lcm = pipeline.__class__.__name__.startswith("LatentConsistencyModel")
 
@@ -1036,51 +1035,6 @@ def get_diffusion_models_for_export_ext(
         models_for_export = get_sd3_models_for_export(pipeline, exporter, int_dtype, float_dtype)
     elif is_flux:
         models_for_export = get_flux_models_for_export(pipeline, exporter, int_dtype, float_dtype)
-=======
-    if is_diffusers_version(">=", "0.29.0"):
-        from diffusers import StableDiffusion3Img2ImgPipeline, StableDiffusion3Pipeline
-
-        sd3_pipes = [StableDiffusion3Pipeline, StableDiffusion3Img2ImgPipeline]
-        if is_diffusers_version(">=", "0.30.0"):
-            from diffusers import StableDiffusion3InpaintPipeline
-
-            sd3_pipes.append(StableDiffusion3InpaintPipeline)
-
-        is_sd3 = isinstance(pipeline, tuple(sd3_pipes))
-    else:
-        is_sd3 = False
-
-    if is_diffusers_version(">=", "0.30.0"):
-        from diffusers import FluxPipeline
-
-        flux_pipes = [FluxPipeline]
-
-        if is_diffusers_version(">=", "0.31.0"):
-            from diffusers import FluxImg2ImgPipeline, FluxInpaintPipeline
-
-            flux_pipes.extend([FluxPipeline, FluxImg2ImgPipeline, FluxInpaintPipeline])
-
-        if is_diffusers_version(">=", "0.32.0"):
-            from diffusers import FluxFillPipeline
-
-            flux_pipes.append(FluxFillPipeline)
-
-        is_flux = isinstance(pipeline, tuple(flux_pipes))
-    else:
-        is_flux = False
-
-    if is_diffusers_version(">=", "0.32.0"):
-        from diffusers import SanaPipeline
-
-        is_sana = isinstance(pipeline, SanaPipeline)
-    else:
-        is_sana = False
-
-    if not any([is_sana, is_flux, is_sd3]):
-        return None, get_diffusion_models_for_export(pipeline, int_dtype, float_dtype, exporter)
-    if is_sd3:
-        models_for_export = get_sd3_models_for_export(pipeline, exporter, int_dtype, float_dtype)
->>>>>>> add pipeline
     elif is_sana:
         models_for_export = get_sana_models_for_export(pipeline, exporter, int_dtype, float_dtype)
     else:
diff --git a/optimum/exporters/openvino/model_configs.py b/optimum/exporters/openvino/model_configs.py
index 1f7695cf8..e73039159 100644
--- a/optimum/exporters/openvino/model_configs.py
+++ b/optimum/exporters/openvino/model_configs.py
@@ -106,6 +106,7 @@
     Qwen2VLVisionEmbMergerPatcher,
     QwenModelPatcher,
     RotaryEmbPatcher,
+    SanaTextEncoderModelPatcher,
     StatefulSeq2SeqDecoderPatcher,
     UpdateCausalMaskModelPatcher,
     XverseModelPatcher,
@@ -1903,6 +1904,11 @@ def inputs(self) -> Dict[str, Dict[int, str]]:
             "attention_mask": {0: "batch_size", 1: "sequence_length"},
         }
 
+    def patch_model_for_export(
+        self, model: Union["PreTrainedModel", "TFPreTrainedModel"], model_kwargs: Optional[Dict[str, Any]] = None
+    ) -> ModelPatcher:
+        return SanaTextEncoderModelPatcher(self, model, model_kwargs)
+
 
 class DummySanaSeq2SeqDecoderTextWithEncMaskInputGenerator(DummySeq2SeqDecoderTextInputGenerator):
     SUPPORTED_INPUT_NAMES = (
diff --git a/optimum/exporters/openvino/model_patcher.py b/optimum/exporters/openvino/model_patcher.py
index e7a777938..08bc14988 100644
--- a/optimum/exporters/openvino/model_patcher.py
+++ b/optimum/exporters/openvino/model_patcher.py
@@ -21,9 +21,11 @@
 
 import torch
 import torch.nn.functional as F
+from transformers import PreTrainedModel, TFPreTrainedModel
 from transformers.modeling_outputs import BaseModelOutputWithPast, BaseModelOutputWithPooling
 from transformers.utils import is_tf_available
 
+from optimum.exporters.onnx.base import OnnxConfig
 from optimum.exporters.onnx.model_patcher import (
     DecoderModelPatcher,
     ModelPatcher,
@@ -114,9 +116,11 @@ def patch_model_with_bettertransformer(model):
     return model
 
 
-def patch_update_causal_mask(model, transformers_version, inner_model_name="model", patch_fn=None):
+def patch_update_causal_mask(
+    model, transformers_version, inner_model_name="model", patch_fn=None, patch_extrnal_model=False
+):
     if is_transformers_version(">=", transformers_version):
-        inner_model = getattr(model, inner_model_name, None)
+        inner_model = getattr(model, inner_model_name, None) if not patch_extrnal_model else model
         if inner_model is not None:
             if hasattr(inner_model, "_update_causal_mask"):
                 inner_model._orig_update_causal_mask = inner_model._update_causal_mask
@@ -124,8 +128,8 @@ def patch_update_causal_mask(model, transformers_version, inner_model_name="mode
             inner_model._update_causal_mask = types.MethodType(patch_fn, inner_model)
 
 
-def unpatch_update_causal_mask(model, inner_model_name="model"):
-    inner_model = getattr(model, inner_model_name, None)
+def unpatch_update_causal_mask(model, inner_model_name="model", patch_extrnal_model=False):
+    inner_model = getattr(model, inner_model_name, None) if not patch_extrnal_model else model
     if inner_model is not None and hasattr(inner_model, "._orig_update_causal_mask"):
         inner_model._update_causal_mask = inner_model._orig_update_causal_mask
 
@@ -3791,3 +3795,29 @@ def patched_forward(*args, **kwargs):
         model.forward = patched_forward
 
         super().__init__(config, model, model_kwargs)
+
+
+class SanaTextEncoderModelPatcher(ModelPatcher):
+    def __enter__(self):
+        super().__enter__()
+        patch_update_causal_mask(self._model, "4.39.0", None, patch_extrnal_model=True)
+
+        if self._model.config._attn_implementation != "sdpa":
+            self._model.config._orig_attn_implementation = self._model.config._attn_implementation
+            self._model.config._attn_implementation = "sdpa"
+            if is_transformers_version("<", "4.47.0"):
+                from transformers.models.gemma2.modeling_gemma2 import GEMMA2_ATTENTION_CLASSES
+
+                sdpa_attn = GEMMA2_ATTENTION_CLASSES["sdpa"]
+                for layer in self._model.layers:
+                    layer.self_attn._orig_forward = layer.self_attn.forward
+                    layer.self_attn.forward = types.MethodType(sdpa_attn.forward, layer.self_attn)
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        super().__exit__(exc_type, exc_value, traceback)
+        unpatch_update_causal_mask(self._model, None, True)
+        if hasattr(self._model.config, "_orig_attn_implementation"):
+            self._model.config._attn_implementation = self._model.config._orig_attn_implementation
+            for layer in self._model.layers:
+                if hasattr(layer.self_attn, "_orig_forward"):
+                    layer.self_attn.forward = layer.self_attn._orig_forward
diff --git a/optimum/exporters/openvino/utils.py b/optimum/exporters/openvino/utils.py
index 46b151e7d..1743dc59b 100644
--- a/optimum/exporters/openvino/utils.py
+++ b/optimum/exporters/openvino/utils.py
@@ -257,9 +257,15 @@ def deduce_diffusers_dtype(model_name_or_path, **loading_kwargs):
             model_part_name = "unet"
         if model_part_name:
             directory = path / model_part_name
-            safetensors_files = [
-                filename for filename in directory.glob("*.safetensors") if len(filename.suffixes) == 1
-            ]
+
+            pattern = "*.safetensors"
+            if "variant" in loading_kwargs:
+                variant = loading_kwargs["variant"]
+                pattern = f"*.{variant}.safetensors"
+                safetensors_files = list(directory.glob(pattern))
+            else:
+                # filter out variant files
+                safetensors_files = [filename for filename in directory.glob(pattern) if len(filename.suffixes) == 1]
             safetensors_file = None
             if len(safetensors_files) > 0:
                 safetensors_file = safetensors_files.pop(0)
diff --git a/optimum/intel/openvino/modeling_base.py b/optimum/intel/openvino/modeling_base.py
index 99422f1a5..3fd26a6e0 100644
--- a/optimum/intel/openvino/modeling_base.py
+++ b/optimum/intel/openvino/modeling_base.py
@@ -594,6 +594,8 @@ def _from_transformers(
         else:
             ov_config = OVConfig(dtype="fp32")
 
+        variant = kwargs.pop("variant", None)
+
         main_export(
             model_name_or_path=model_id,
             output=save_dir_path,
@@ -607,6 +609,7 @@ def _from_transformers(
             trust_remote_code=trust_remote_code,
             ov_config=ov_config,
             library_name=cls._library_name,
+            model_variant=variant,
         )
 
         return cls._from_pretrained(
diff --git a/optimum/intel/openvino/modeling_base_seq2seq.py b/optimum/intel/openvino/modeling_base_seq2seq.py
index 11ee8f89a..c60c0ec70 100644
--- a/optimum/intel/openvino/modeling_base_seq2seq.py
+++ b/optimum/intel/openvino/modeling_base_seq2seq.py
@@ -408,6 +408,7 @@ def _from_transformers(
         else:
             ov_config = OVConfig(dtype="fp32")
         stateful = kwargs.get("stateful", True)
+        variant = kwargs.pop("variant", None)
 
         main_export(
             model_name_or_path=model_id,
@@ -422,6 +423,7 @@ def _from_transformers(
             trust_remote_code=trust_remote_code,
             ov_config=ov_config,
             stateful=stateful,
+            model_variant=variant,
         )
 
         return cls._from_pretrained(
diff --git a/optimum/intel/openvino/modeling_decoder.py b/optimum/intel/openvino/modeling_decoder.py
index 4897db145..b411bf07d 100644
--- a/optimum/intel/openvino/modeling_decoder.py
+++ b/optimum/intel/openvino/modeling_decoder.py
@@ -310,6 +310,8 @@ def _from_transformers(
         if torch_dtype is not None:
             model_loading_kwargs["torch_dtype"] = torch_dtype
 
+        variant = kwargs.pop("variant", None)
+
         main_export(
             model_name_or_path=model_id,
             output=save_dir_path,
@@ -325,6 +327,7 @@ def _from_transformers(
             stateful=stateful,
             model_loading_kwargs=model_loading_kwargs,
             library_name=cls._library_name,
+            model_variant=variant,
         )
 
         if config.model_type == "phi3" and config.max_position_embeddings != getattr(
diff --git a/optimum/intel/openvino/modeling_diffusion.py b/optimum/intel/openvino/modeling_diffusion.py
index 4a3f7104b..c2e245c5e 100644
--- a/optimum/intel/openvino/modeling_diffusion.py
+++ b/optimum/intel/openvino/modeling_diffusion.py
@@ -575,6 +575,7 @@ def _from_transformers(
 
         model_save_dir = TemporaryDirectory()
         model_save_path = Path(model_save_dir.name)
+        variant = kwargs.pop("variant", None)
 
         main_export(
             model_name_or_path=model_id,
@@ -589,6 +590,7 @@ def _from_transformers(
             force_download=force_download,
             ov_config=ov_config,
             library_name=cls._library_name,
+            model_variant=variant,
         )
 
         return cls._from_pretrained(
diff --git a/optimum/intel/openvino/modeling_visual_language.py b/optimum/intel/openvino/modeling_visual_language.py
index 1c0e35cca..c7cd7227f 100644
--- a/optimum/intel/openvino/modeling_visual_language.py
+++ b/optimum/intel/openvino/modeling_visual_language.py
@@ -615,6 +615,7 @@ def _from_transformers(
             ov_config = OVConfig(dtype="fp32" if load_in_8bit is False else "auto")
 
         stateful = kwargs.pop("stateful", ensure_stateful_is_available(warn=False) and use_cache)
+        variant = kwargs.pop("variant", None)
 
         main_export(
             model_name_or_path=model_id,
@@ -629,6 +630,7 @@ def _from_transformers(
             trust_remote_code=trust_remote_code,
             ov_config=ov_config,
             stateful=stateful,
+            model_variant=variant,
         )
         config = AutoConfig.from_pretrained(save_dir_path, trust_remote_code=trust_remote_code)
         return cls._from_pretrained(
diff --git a/tests/openvino/test_diffusion.py b/tests/openvino/test_diffusion.py
index b155353fc..bff187934 100644
--- a/tests/openvino/test_diffusion.py
+++ b/tests/openvino/test_diffusion.py
@@ -149,12 +149,9 @@ def test_compare_to_diffusers_pipeline(self, model_arch: str):
             for output_type in ["latent", "np", "pt"]:
                 inputs["output_type"] = output_type
                 if model_arch == "sana":
-                    if output_type == "latent":
-                        continue
+                    # resolution binning will lead to resize output to standard resolution and back that can interpolate floating-point deviations
                     inputs["use_resolution_binning"] = False
-                    atol = 4e-2
-                else:
-                    atol = 6e-3
+                atol = 1e-4
 
                 ov_output = ov_pipeline(**inputs, generator=get_generator("pt", SEED)).images
                 diffusers_output = diffusers_pipeline(**inputs, generator=get_generator("pt", SEED)).images
@@ -166,12 +163,9 @@ def test_compare_to_diffusers_pipeline(self, model_arch: str):
         for output_type in ["latent", "np", "pt"]:
             inputs["output_type"] = output_type
             if model_arch == "sana":
-                if output_type == "latent":
-                    continue
+                # resolution binning will lead to resize output to standard resolution and back that can interpolate floating-point deviations
                 inputs["use_resolution_binning"] = False
-                atol = 4e-2
-            else:
-                atol = 6e-3
+            atol = 6e-3
 
             ov_output = ov_pipeline(**inputs, generator=get_generator("pt", SEED)).images
             diffusers_output = diffusers_pipeline(**inputs, generator=get_generator("pt", SEED)).images