diff --git a/api/core/ops/arize_phoenix_trace/arize_phoenix_trace.py b/api/core/ops/arize_phoenix_trace/arize_phoenix_trace.py
index a20f2485c..e7c90c122 100644
--- a/api/core/ops/arize_phoenix_trace/arize_phoenix_trace.py
+++ b/api/core/ops/arize_phoenix_trace/arize_phoenix_trace.py
@@ -4,6 +4,7 @@ import logging
 import os
 from datetime import datetime, timedelta
 from typing import Any, Optional, Union, cast
+from urllib.parse import urlparse
 
 from openinference.semconv.trace import OpenInferenceSpanKindValues, SpanAttributes
 from opentelemetry import trace
@@ -40,8 +41,14 @@ def setup_tracer(arize_phoenix_config: ArizeConfig | PhoenixConfig) -> tuple[tra
     try:
         # Choose the appropriate exporter based on config type
         exporter: Union[GrpcOTLPSpanExporter, HttpOTLPSpanExporter]
+
+        # Inspect the provided endpoint to determine its structure
+        parsed = urlparse(arize_phoenix_config.endpoint)
+        base_endpoint = f"{parsed.scheme}://{parsed.netloc}"
+        path = parsed.path.rstrip("/")
+
         if isinstance(arize_phoenix_config, ArizeConfig):
-            arize_endpoint = f"{arize_phoenix_config.endpoint}/v1"
+            arize_endpoint = f"{base_endpoint}/v1"
             arize_headers = {
                 "api_key": arize_phoenix_config.api_key or "",
                 "space_id": arize_phoenix_config.space_id or "",
@@ -53,7 +60,7 @@ def setup_tracer(arize_phoenix_config: ArizeConfig | PhoenixConfig) -> tuple[tra
                 timeout=30,
             )
         else:
-            phoenix_endpoint = f"{arize_phoenix_config.endpoint}/v1/traces"
+            phoenix_endpoint = f"{base_endpoint}{path}/v1/traces"
             phoenix_headers = {
                 "api_key": arize_phoenix_config.api_key or "",
                 "authorization": f"Bearer {arize_phoenix_config.api_key or ''}",
diff --git a/api/core/ops/entities/config_entity.py b/api/core/ops/entities/config_entity.py
index 626782cee..851a77fbc 100644
--- a/api/core/ops/entities/config_entity.py
+++ b/api/core/ops/entities/config_entity.py
@@ -87,7 +87,7 @@ class PhoenixConfig(BaseTracingConfig):
     @field_validator("endpoint")
     @classmethod
     def endpoint_validator(cls, v, info: ValidationInfo):
-        return cls.validate_endpoint_url(v, "https://app.phoenix.arize.com")
+        return validate_url_with_path(v, "https://app.phoenix.arize.com")
 
 
 class LangfuseConfig(BaseTracingConfig):
diff --git a/api/tests/unit_tests/core/ops/test_config_entity.py b/api/tests/unit_tests/core/ops/test_config_entity.py
index 209f8b7c5..1dc380ad0 100644
--- a/api/tests/unit_tests/core/ops/test_config_entity.py
+++ b/api/tests/unit_tests/core/ops/test_config_entity.py
@@ -102,9 +102,14 @@ class TestPhoenixConfig:
         assert config.project == "default"
 
     def test_endpoint_validation_with_path(self):
-        """Test endpoint validation normalizes URL by removing path"""
-        config = PhoenixConfig(endpoint="https://custom.phoenix.com/api/v1")
-        assert config.endpoint == "https://custom.phoenix.com"
+        """Test endpoint validation with path"""
+        config = PhoenixConfig(endpoint="https://app.phoenix.arize.com/s/dify-integration")
+        assert config.endpoint == "https://app.phoenix.arize.com/s/dify-integration"
+
+    def test_endpoint_validation_without_path(self):
+        """Test endpoint validation without path"""
+        config = PhoenixConfig(endpoint="https://app.phoenix.arize.com")
+        assert config.endpoint == "https://app.phoenix.arize.com"
 
 
 class TestLangfuseConfig:
@@ -368,13 +373,15 @@ class TestConfigIntegration:
         """Test that URL normalization works consistently across configs"""
         # Test that paths are removed from endpoints
         arize_config = ArizeConfig(endpoint="https://arize.com/api/v1/test")
-        phoenix_config = PhoenixConfig(endpoint="https://phoenix.com/api/v2/")
+        phoenix_with_path_config = PhoenixConfig(endpoint="https://app.phoenix.arize.com/s/dify-integration")
+        phoenix_without_path_config = PhoenixConfig(endpoint="https://app.phoenix.arize.com")
         aliyun_config = AliyunConfig(
             license_key="test_license", endpoint="https://tracing-analysis-dc-hz.aliyuncs.com/api/v1/traces"
         )
 
         assert arize_config.endpoint == "https://arize.com"
-        assert phoenix_config.endpoint == "https://phoenix.com"
+        assert phoenix_with_path_config.endpoint == "https://app.phoenix.arize.com/s/dify-integration"
+        assert phoenix_without_path_config.endpoint == "https://app.phoenix.arize.com"
         assert aliyun_config.endpoint == "https://tracing-analysis-dc-hz.aliyuncs.com"
 
     def test_project_default_values(self):