diff --git a/sentry_sdk/integrations/openai_agents/spans/ai_client.py b/sentry_sdk/integrations/openai_agents/spans/ai_client.py
index 697f0d6cf7..29b5c8cd26 100644
--- a/sentry_sdk/integrations/openai_agents/spans/ai_client.py
+++ b/sentry_sdk/integrations/openai_agents/spans/ai_client.py
@@ -46,6 +46,7 @@
 
 from ..consts import SPAN_ORIGIN
 from ..utils import (
+    _get_request_model_name,
     _set_agent_data,
     _set_input_data,
     _set_output_data,
@@ -201,11 +202,7 @@ def ai_client_span(
     agent: "Agent", get_response_kwargs: "dict[str, Any]"
 ) -> "Union[sentry_sdk.tracing.Span, StreamedSpan]":
     # TODO-anton: implement other types of operations. Now "chat" is hardcoded.
-    model_name = None
-    if agent.model:
-        model_name = agent.model.model if hasattr(agent.model, "model") else agent.model
-    elif hasattr(agent, "_sentry_request_model"):
-        model_name = agent._sentry_request_model
+    model_name = _get_request_model_name(agent)
 
     client_options = sentry_sdk.get_client().options
 
diff --git a/sentry_sdk/integrations/openai_agents/utils.py b/sentry_sdk/integrations/openai_agents/utils.py
index 01303e0e58..53a6b14404 100644
--- a/sentry_sdk/integrations/openai_agents/utils.py
+++ b/sentry_sdk/integrations/openai_agents/utils.py
@@ -48,6 +48,23 @@ def _capture_exception(exc: "Any") -> None:
     sentry_sdk.capture_event(event, hint=hint)
 
 
+def _get_request_model_name(agent: "agents.Agent") -> "Optional[str]":
+    """Resolve the request model name used on openai-agents spans.
+
+    Precedence matches the previous duplicated lookups:
+    1. ``agent.model.model`` when ``agent.model`` is a ``Model`` instance
+    2. ``agent.model`` when it is a string
+    3. ``agent._sentry_request_model`` when the agent uses a default model
+    """
+    if isinstance(agent.model, Model) and hasattr(agent.model, "model"):
+        return agent.model.model
+    if isinstance(agent.model, str):
+        return agent.model
+    if hasattr(agent, "_sentry_request_model"):
+        return agent._sentry_request_model
+    return None
+
+
 def _set_agent_data(
     span: "Union[sentry_sdk.tracing.Span, StreamedSpan]", agent: "agents.Agent"
 ) -> None:
@@ -64,14 +81,7 @@ def _set_agent_data(
     if agent.model_settings.max_tokens:
         set_on_span(SPANDATA.GEN_AI_REQUEST_MAX_TOKENS, agent.model_settings.max_tokens)
 
-    model_name: "Optional[str]" = None
-    if isinstance(agent.model, Model) and hasattr(agent.model, "model"):
-        model_name = agent.model.model
-    elif isinstance(agent.model, str):
-        model_name = agent.model
-    elif hasattr(agent, "_sentry_request_model"):
-        model_name = agent._sentry_request_model
-
+    model_name = _get_request_model_name(agent)
     if model_name:
         set_on_span(SPANDATA.GEN_AI_REQUEST_MODEL, model_name)
 
diff --git a/tests/integrations/openai_agents/test_request_model.py b/tests/integrations/openai_agents/test_request_model.py
new file mode 100644
index 0000000000..32092fc249
--- /dev/null
+++ b/tests/integrations/openai_agents/test_request_model.py
@@ -0,0 +1,34 @@
+from agents import Agent
+from agents.models.openai_responses import OpenAIResponsesModel
+from openai import AsyncOpenAI
+
+from sentry_sdk.integrations.openai_agents.utils import _get_request_model_name
+
+
+def test_request_model_name_prefers_model_instance_over_sentry_fallback():
+    client = AsyncOpenAI(api_key="test-key")
+    model = OpenAIResponsesModel(model="gpt-4", openai_client=client)
+    agent = Agent(name="test_agent", model=model)
+    agent._sentry_request_model = "fallback-model"
+
+    assert _get_request_model_name(agent) == "gpt-4"
+
+
+def test_request_model_name_prefers_string_model_over_sentry_fallback():
+    agent = Agent(name="test_agent", model="gpt-4o-mini")
+    agent._sentry_request_model = "fallback-model"
+
+    assert _get_request_model_name(agent) == "gpt-4o-mini"
+
+
+def test_request_model_name_falls_back_to_sentry_request_model():
+    agent = Agent(name="test_agent", model=None)
+    agent._sentry_request_model = "default-from-run-config"
+
+    assert _get_request_model_name(agent) == "default-from-run-config"
+
+
+def test_request_model_name_returns_none_without_model_or_fallback():
+    agent = Agent(name="test_agent", model=None)
+
+    assert _get_request_model_name(agent) is None