diff --git a/tests/api_resources/audio/test_speech.py b/tests/api_resources/audio/test_speech.py
index 1f04a6643..781ebeceb 100644
--- a/tests/api_resources/audio/test_speech.py
+++ b/tests/api_resources/audio/test_speech.py
@@ -27,7 +27,7 @@ def test_method_create(self, client: OpenAI, respx_mock: MockRouter) -> None:
         respx_mock.post("/audio/speech").mock(return_value=httpx.Response(200, json={"foo": "bar"}))
         speech = client.audio.speech.create(
             input="string",
-            model="tts-1",
+            model="string",
             voice="alloy",
         )
         assert isinstance(speech, _legacy_response.HttpxBinaryResponseContent)
@@ -39,7 +39,7 @@ def test_method_create_with_all_params(self, client: OpenAI, respx_mock: MockRou
         respx_mock.post("/audio/speech").mock(return_value=httpx.Response(200, json={"foo": "bar"}))
         speech = client.audio.speech.create(
             input="string",
-            model="tts-1",
+            model="string",
             voice="alloy",
             response_format="mp3",
             speed=0.25,
@@ -54,7 +54,7 @@ def test_raw_response_create(self, client: OpenAI, respx_mock: MockRouter) -> No
 
         response = client.audio.speech.with_raw_response.create(
             input="string",
-            model="tts-1",
+            model="string",
             voice="alloy",
         )
 
@@ -69,7 +69,7 @@ def test_streaming_response_create(self, client: OpenAI, respx_mock: MockRouter)
         respx_mock.post("/audio/speech").mock(return_value=httpx.Response(200, json={"foo": "bar"}))
         with client.audio.speech.with_streaming_response.create(
             input="string",
-            model="tts-1",
+            model="string",
             voice="alloy",
         ) as response:
             assert not response.is_closed
@@ -90,7 +90,7 @@ async def test_method_create(self, async_client: AsyncOpenAI, respx_mock: MockRo
         respx_mock.post("/audio/speech").mock(return_value=httpx.Response(200, json={"foo": "bar"}))
         speech = await async_client.audio.speech.create(
             input="string",
-            model="tts-1",
+            model="string",
             voice="alloy",
         )
         assert isinstance(speech, _legacy_response.HttpxBinaryResponseContent)
@@ -102,7 +102,7 @@ async def test_method_create_with_all_params(self, async_client: AsyncOpenAI, re
         respx_mock.post("/audio/speech").mock(return_value=httpx.Response(200, json={"foo": "bar"}))
         speech = await async_client.audio.speech.create(
             input="string",
-            model="tts-1",
+            model="string",
             voice="alloy",
             response_format="mp3",
             speed=0.25,
@@ -117,7 +117,7 @@ async def test_raw_response_create(self, async_client: AsyncOpenAI, respx_mock:
 
         response = await async_client.audio.speech.with_raw_response.create(
             input="string",
-            model="tts-1",
+            model="string",
             voice="alloy",
         )
 
@@ -132,7 +132,7 @@ async def test_streaming_response_create(self, async_client: AsyncOpenAI, respx_
         respx_mock.post("/audio/speech").mock(return_value=httpx.Response(200, json={"foo": "bar"}))
         async with async_client.audio.speech.with_streaming_response.create(
             input="string",
-            model="tts-1",
+            model="string",
             voice="alloy",
         ) as response:
             assert not response.is_closed
diff --git a/tests/api_resources/test_completions.py b/tests/api_resources/test_completions.py
index fa7ae5213..69d914200 100644
--- a/tests/api_resources/test_completions.py
+++ b/tests/api_resources/test_completions.py
@@ -20,7 +20,7 @@ class TestCompletions:
     @parametrize
     def test_method_create_overload_1(self, client: OpenAI) -> None:
         completion = client.completions.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
         )
         assert_matches_type(Completion, completion, path=["response"])
@@ -28,7 +28,7 @@ def test_method_create_overload_1(self, client: OpenAI) -> None:
     @parametrize
     def test_method_create_with_all_params_overload_1(self, client: OpenAI) -> None:
         completion = client.completions.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
             best_of=0,
             echo=True,
@@ -52,7 +52,7 @@ def test_method_create_with_all_params_overload_1(self, client: OpenAI) -> None:
     @parametrize
     def test_raw_response_create_overload_1(self, client: OpenAI) -> None:
         response = client.completions.with_raw_response.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
         )
 
@@ -64,7 +64,7 @@ def test_raw_response_create_overload_1(self, client: OpenAI) -> None:
     @parametrize
     def test_streaming_response_create_overload_1(self, client: OpenAI) -> None:
         with client.completions.with_streaming_response.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
         ) as response:
             assert not response.is_closed
@@ -78,7 +78,7 @@ def test_streaming_response_create_overload_1(self, client: OpenAI) -> None:
     @parametrize
     def test_method_create_overload_2(self, client: OpenAI) -> None:
         completion_stream = client.completions.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
             stream=True,
         )
@@ -87,7 +87,7 @@ def test_method_create_overload_2(self, client: OpenAI) -> None:
     @parametrize
     def test_method_create_with_all_params_overload_2(self, client: OpenAI) -> None:
         completion_stream = client.completions.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
             stream=True,
             best_of=0,
@@ -111,7 +111,7 @@ def test_method_create_with_all_params_overload_2(self, client: OpenAI) -> None:
     @parametrize
     def test_raw_response_create_overload_2(self, client: OpenAI) -> None:
         response = client.completions.with_raw_response.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
             stream=True,
         )
@@ -123,7 +123,7 @@ def test_raw_response_create_overload_2(self, client: OpenAI) -> None:
     @parametrize
     def test_streaming_response_create_overload_2(self, client: OpenAI) -> None:
         with client.completions.with_streaming_response.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
             stream=True,
         ) as response:
@@ -142,7 +142,7 @@ class TestAsyncCompletions:
     @parametrize
     async def test_method_create_overload_1(self, async_client: AsyncOpenAI) -> None:
         completion = await async_client.completions.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
         )
         assert_matches_type(Completion, completion, path=["response"])
@@ -150,7 +150,7 @@ async def test_method_create_overload_1(self, async_client: AsyncOpenAI) -> None
     @parametrize
     async def test_method_create_with_all_params_overload_1(self, async_client: AsyncOpenAI) -> None:
         completion = await async_client.completions.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
             best_of=0,
             echo=True,
@@ -174,7 +174,7 @@ async def test_method_create_with_all_params_overload_1(self, async_client: Asyn
     @parametrize
     async def test_raw_response_create_overload_1(self, async_client: AsyncOpenAI) -> None:
         response = await async_client.completions.with_raw_response.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
         )
 
@@ -186,7 +186,7 @@ async def test_raw_response_create_overload_1(self, async_client: AsyncOpenAI) -
     @parametrize
     async def test_streaming_response_create_overload_1(self, async_client: AsyncOpenAI) -> None:
         async with async_client.completions.with_streaming_response.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
         ) as response:
             assert not response.is_closed
@@ -200,7 +200,7 @@ async def test_streaming_response_create_overload_1(self, async_client: AsyncOpe
     @parametrize
     async def test_method_create_overload_2(self, async_client: AsyncOpenAI) -> None:
         completion_stream = await async_client.completions.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
             stream=True,
         )
@@ -209,7 +209,7 @@ async def test_method_create_overload_2(self, async_client: AsyncOpenAI) -> None
     @parametrize
     async def test_method_create_with_all_params_overload_2(self, async_client: AsyncOpenAI) -> None:
         completion_stream = await async_client.completions.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
             stream=True,
             best_of=0,
@@ -233,7 +233,7 @@ async def test_method_create_with_all_params_overload_2(self, async_client: Asyn
     @parametrize
     async def test_raw_response_create_overload_2(self, async_client: AsyncOpenAI) -> None:
         response = await async_client.completions.with_raw_response.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
             stream=True,
         )
@@ -245,7 +245,7 @@ async def test_raw_response_create_overload_2(self, async_client: AsyncOpenAI) -
     @parametrize
     async def test_streaming_response_create_overload_2(self, async_client: AsyncOpenAI) -> None:
         async with async_client.completions.with_streaming_response.create(
-            model="gpt-3.5-turbo-instruct",
+            model="string",
             prompt="This is a test.",
             stream=True,
         ) as response: