diff --git a/src/openai/resources/beta/chat/completions.py b/src/openai/resources/beta/chat/completions.py
index 47bcf42c16..38c09ce8dd 100644
--- a/src/openai/resources/beta/chat/completions.py
+++ b/src/openai/resources/beta/chat/completions.py
@@ -33,6 +33,7 @@
 from ....types.chat.chat_completion_audio_param import ChatCompletionAudioParam
 from ....types.chat.chat_completion_message_param import ChatCompletionMessageParam
 from ....types.chat.chat_completion_stream_options_param import ChatCompletionStreamOptionsParam
+from ....types.chat.chat_completion_prediction_content_param import ChatCompletionPredictionContentParam
 from ....types.chat.chat_completion_tool_choice_option_param import ChatCompletionToolChoiceOptionParam
 
 __all__ = ["Completions", "AsyncCompletions"]
@@ -76,6 +77,7 @@ def parse(
         modalities: Optional[List[ChatCompletionModality]] | NotGiven = NOT_GIVEN,
         n: Optional[int] | NotGiven = NOT_GIVEN,
         parallel_tool_calls: bool | NotGiven = NOT_GIVEN,
+        prediction: Optional[ChatCompletionPredictionContentParam] | NotGiven = NOT_GIVEN,
         presence_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         seed: Optional[int] | NotGiven = NOT_GIVEN,
         service_tier: Optional[Literal["auto", "default"]] | NotGiven = NOT_GIVEN,
@@ -169,6 +171,7 @@ def parser(raw_completion: ChatCompletion) -> ParsedChatCompletion[ResponseForma
                     "modalities": modalities,
                     "n": n,
                     "parallel_tool_calls": parallel_tool_calls,
+                    "prediction": prediction,
                     "presence_penalty": presence_penalty,
                     "response_format": _type_to_response_format(response_format),
                     "seed": seed,
@@ -217,6 +220,7 @@ def stream(
         modalities: Optional[List[ChatCompletionModality]] | NotGiven = NOT_GIVEN,
         n: Optional[int] | NotGiven = NOT_GIVEN,
         parallel_tool_calls: bool | NotGiven = NOT_GIVEN,
+        prediction: Optional[ChatCompletionPredictionContentParam] | NotGiven = NOT_GIVEN,
         presence_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         seed: Optional[int] | NotGiven = NOT_GIVEN,
         service_tier: Optional[Literal["auto", "default"]] | NotGiven = NOT_GIVEN,
@@ -281,6 +285,7 @@ def stream(
             modalities=modalities,
             n=n,
             parallel_tool_calls=parallel_tool_calls,
+            prediction=prediction,
             presence_penalty=presence_penalty,
             seed=seed,
             service_tier=service_tier,
@@ -343,6 +348,7 @@ async def parse(
         modalities: Optional[List[ChatCompletionModality]] | NotGiven = NOT_GIVEN,
         n: Optional[int] | NotGiven = NOT_GIVEN,
         parallel_tool_calls: bool | NotGiven = NOT_GIVEN,
+        prediction: Optional[ChatCompletionPredictionContentParam] | NotGiven = NOT_GIVEN,
         presence_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         seed: Optional[int] | NotGiven = NOT_GIVEN,
         service_tier: Optional[Literal["auto", "default"]] | NotGiven = NOT_GIVEN,
@@ -436,6 +442,7 @@ def parser(raw_completion: ChatCompletion) -> ParsedChatCompletion[ResponseForma
                     "modalities": modalities,
                     "n": n,
                     "parallel_tool_calls": parallel_tool_calls,
+                    "prediction": prediction,
                     "presence_penalty": presence_penalty,
                     "response_format": _type_to_response_format(response_format),
                     "seed": seed,
@@ -484,6 +491,7 @@ def stream(
         modalities: Optional[List[ChatCompletionModality]] | NotGiven = NOT_GIVEN,
         n: Optional[int] | NotGiven = NOT_GIVEN,
         parallel_tool_calls: bool | NotGiven = NOT_GIVEN,
+        prediction: Optional[ChatCompletionPredictionContentParam] | NotGiven = NOT_GIVEN,
         presence_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         seed: Optional[int] | NotGiven = NOT_GIVEN,
         service_tier: Optional[Literal["auto", "default"]] | NotGiven = NOT_GIVEN,
@@ -549,6 +557,7 @@ def stream(
             modalities=modalities,
             n=n,
             parallel_tool_calls=parallel_tool_calls,
+            prediction=prediction,
             presence_penalty=presence_penalty,
             seed=seed,
             service_tier=service_tier,
diff --git a/tests/lib/chat/test_completions.py b/tests/lib/chat/test_completions.py
index 5cd7b1ee53..48f41eb221 100644
--- a/tests/lib/chat/test_completions.py
+++ b/tests/lib/chat/test_completions.py
@@ -77,7 +77,12 @@ def test_parse_nothing(client: OpenAI, respx_mock: MockRouter, monkeypatch: pyte
     system_fingerprint='fp_b40fb1c6fb',
     usage=CompletionUsage(
         completion_tokens=37,
-        completion_tokens_details=CompletionTokensDetails(audio_tokens=None, reasoning_tokens=0),
+        completion_tokens_details=CompletionTokensDetails(
+            accepted_prediction_tokens=None,
+            audio_tokens=None,
+            reasoning_tokens=0,
+            rejected_prediction_tokens=None
+        ),
         prompt_tokens=14,
         prompt_tokens_details=None,
         total_tokens=51
@@ -139,7 +144,12 @@ class Location(BaseModel):
     system_fingerprint='fp_5050236cbd',
     usage=CompletionUsage(
         completion_tokens=14,
-        completion_tokens_details=CompletionTokensDetails(audio_tokens=None, reasoning_tokens=0),
+        completion_tokens_details=CompletionTokensDetails(
+            accepted_prediction_tokens=None,
+            audio_tokens=None,
+            reasoning_tokens=0,
+            rejected_prediction_tokens=None
+        ),
         prompt_tokens=79,
         prompt_tokens_details=None,
         total_tokens=93
@@ -203,7 +213,12 @@ class Location(BaseModel):
     system_fingerprint='fp_b40fb1c6fb',
     usage=CompletionUsage(
         completion_tokens=14,
-        completion_tokens_details=CompletionTokensDetails(audio_tokens=None, reasoning_tokens=0),
+        completion_tokens_details=CompletionTokensDetails(
+            accepted_prediction_tokens=None,
+            audio_tokens=None,
+            reasoning_tokens=0,
+            rejected_prediction_tokens=None
+        ),
         prompt_tokens=88,
         prompt_tokens_details=None,
         total_tokens=102
@@ -396,7 +411,12 @@ class CalendarEvent:
     system_fingerprint='fp_7568d46099',
     usage=CompletionUsage(
         completion_tokens=17,
-        completion_tokens_details=CompletionTokensDetails(audio_tokens=None, reasoning_tokens=0),
+        completion_tokens_details=CompletionTokensDetails(
+            accepted_prediction_tokens=None,
+            audio_tokens=None,
+            reasoning_tokens=0,
+            rejected_prediction_tokens=None
+        ),
         prompt_tokens=92,
         prompt_tokens_details=None,
         total_tokens=109
@@ -847,7 +867,12 @@ class Location(BaseModel):
     system_fingerprint='fp_5050236cbd',
     usage=CompletionUsage(
         completion_tokens=14,
-        completion_tokens_details=CompletionTokensDetails(audio_tokens=None, reasoning_tokens=0),
+        completion_tokens_details=CompletionTokensDetails(
+            accepted_prediction_tokens=None,
+            audio_tokens=None,
+            reasoning_tokens=0,
+            rejected_prediction_tokens=None
+        ),
         prompt_tokens=79,
         prompt_tokens_details=None,
         total_tokens=93
@@ -917,7 +942,12 @@ class Location(BaseModel):
     system_fingerprint='fp_5050236cbd',
     usage=CompletionUsage(
         completion_tokens=14,
-        completion_tokens_details=CompletionTokensDetails(audio_tokens=None, reasoning_tokens=0),
+        completion_tokens_details=CompletionTokensDetails(
+            accepted_prediction_tokens=None,
+            audio_tokens=None,
+            reasoning_tokens=0,
+            rejected_prediction_tokens=None
+        ),
         prompt_tokens=79,
         prompt_tokens_details=None,
         total_tokens=93
diff --git a/tests/lib/chat/test_completions_streaming.py b/tests/lib/chat/test_completions_streaming.py
index 2846e6d2c3..ab12de44b3 100644
--- a/tests/lib/chat/test_completions_streaming.py
+++ b/tests/lib/chat/test_completions_streaming.py
@@ -157,7 +157,12 @@ def on_event(stream: ChatCompletionStream[Location], event: ChatCompletionStream
     system_fingerprint='fp_5050236cbd',
     usage=CompletionUsage(
         completion_tokens=14,
-        completion_tokens_details=CompletionTokensDetails(audio_tokens=None, reasoning_tokens=0),
+        completion_tokens_details=CompletionTokensDetails(
+            accepted_prediction_tokens=None,
+            audio_tokens=None,
+            reasoning_tokens=0,
+            rejected_prediction_tokens=None
+        ),
         prompt_tokens=79,
         prompt_tokens_details=None,
         total_tokens=93