diff --git a/examples/chat_history_librarian.py b/examples/chat_history_librarian.py
index 206fd46b6..af870f272 100644
--- a/examples/chat_history_librarian.py
+++ b/examples/chat_history_librarian.py
@@ -27,7 +27,7 @@ class Librarian(OpenAICall):
     librarian.question = input("(User): ")
     response = librarian.call()
     librarian.history.append({"role": "user", "content": librarian.question})
-    librarian.history.append({"role": "assistant", "content": response.content})
+    librarian.history.append(response.message_param)
     print(f"(Assistant): {response.content}")
 
 # > (User): What fantasy book should I read?
diff --git a/mirascope/anthropic/types.py b/mirascope/anthropic/types.py
index 2813e92bf..ae7e12f1c 100644
--- a/mirascope/anthropic/types.py
+++ b/mirascope/anthropic/types.py
@@ -8,6 +8,7 @@
     ContentBlockDeltaEvent,
     ContentBlockStartEvent,
     Message,
+    MessageParam,
     MessageStreamEvent,
     TextBlock,
     TextDelta,
@@ -92,6 +93,11 @@ class BookRecommender(AnthropicCall):
 
     response_format: Optional[Literal["json"]] = None
 
+    @property
+    def message_param(self) -> MessageParam:
+        """Returns the assistant's response as a message parameter."""
+        return self.response.model_dump(include={"content", "role"})  # type: ignore
+
     @property
     def tools(self) -> Optional[list[AnthropicTool]]:
         """Returns the tools for the 0th choice message."""
diff --git a/mirascope/base/types.py b/mirascope/base/types.py
index 668e02513..a77fa8d95 100644
--- a/mirascope/base/types.py
+++ b/mirascope/base/types.py
@@ -138,6 +138,11 @@ class BaseCallResponse(BaseModel, Generic[ResponseT, BaseToolT], ABC):
 
     model_config = ConfigDict(extra="allow", arbitrary_types_allowed=True)
 
+    @property
+    def message_param(self) -> Any:
+        """Returns the assistant's response as a message parameter."""
+        ...  # pragma: no cover
+
     @property
     @abstractmethod
     def tools(self) -> Optional[list[BaseToolT]]:
diff --git a/mirascope/cohere/types.py b/mirascope/cohere/types.py
index 4e235bdba..4b686b489 100644
--- a/mirascope/cohere/types.py
+++ b/mirascope/cohere/types.py
@@ -116,6 +116,15 @@ class BookRecommender(CohereCall):
     # We need to skip validation since it's a pydantic_v1 model and breaks validation.
     response: SkipValidation[NonStreamedChatResponse]
 
+    @property
+    def message_param(self) -> ChatMessage:
+        """Returns the assistant's response as a message parameter."""
+        return ChatMessage(
+            message=self.response.text,
+            tool_calls=self.response.tool_calls,
+            role="assistant",  # type: ignore
+        )
+
     @property
     def content(self) -> str:
         """Returns the content of the chat completion for the 0th choice."""
diff --git a/mirascope/gemini/types.py b/mirascope/gemini/types.py
index 7952682d0..0dcd55041 100644
--- a/mirascope/gemini/types.py
+++ b/mirascope/gemini/types.py
@@ -4,6 +4,7 @@
 
 from google.generativeai.types import (  # type: ignore
     AsyncGenerateContentResponse,
+    ContentDict,
     GenerateContentResponse,
 )
 
@@ -75,6 +76,11 @@ class BookRecommender(GeminiPrompt):
     ```
     """
 
+    @property
+    def message_param(self) -> ContentDict:
+        """Returns the models's response as a message parameter."""
+        return {"role": "model", "parts": self.response.parts}
+
     @property
     def tools(self) -> Optional[list[GeminiTool]]:
         """Returns the list of tools for the 0th candidate's 0th content part."""
diff --git a/mirascope/groq/types.py b/mirascope/groq/types.py
index 0233834fe..796e18055 100644
--- a/mirascope/groq/types.py
+++ b/mirascope/groq/types.py
@@ -3,7 +3,7 @@
 from typing import Any, Optional, Type, Union
 
 from groq._types import Body, Headers, Query
-from groq.types.chat import ChatCompletion
+from groq.types.chat import ChatCompletion, ChatCompletionAssistantMessageParam
 from groq.types.chat.chat_completion import (
     ChatCompletionMessage,
     Choice,
@@ -104,6 +104,11 @@ class BookRecommender(GroqCall):
 
     response_format: Optional[ResponseFormat] = None
 
+    @property
+    def message_param(self) -> ChatCompletionAssistantMessageParam:
+        """Returns the assistants's response as a message parameter."""
+        return self.message.model_dump(exclude={"function_call"})  # type: ignore
+
     @property
     def choices(self) -> list[Choice]:
         """Returns the array of chat completion choices."""
diff --git a/mirascope/mistral/types.py b/mirascope/mistral/types.py
index 0651f02c5..8342e033a 100644
--- a/mirascope/mistral/types.py
+++ b/mirascope/mistral/types.py
@@ -15,7 +15,7 @@
 )
 from pydantic import ConfigDict
 
-from ..base import BaseCallParams, BaseCallResponse, BaseCallResponseChunk
+from ..base import BaseCallParams, BaseCallResponse, BaseCallResponseChunk, Message
 from .tools import MistralTool
 
 
@@ -68,6 +68,11 @@ class BookRecommender(MistralCall):
 
     """
 
+    @property
+    def message_param(self) -> Message:
+        """Returns the assistants's response as a message parameter."""
+        return self.message.model_dump()  # type: ignore
+
     @property
     def choices(self) -> list[ChatCompletionResponseChoice]:
         """Returns the array of chat completion choices."""
diff --git a/mirascope/openai/types.py b/mirascope/openai/types.py
index 07673a5ea..7fa7e58a1 100644
--- a/mirascope/openai/types.py
+++ b/mirascope/openai/types.py
@@ -7,6 +7,7 @@
 from openai.types import Embedding
 from openai.types.chat import (
     ChatCompletion,
+    ChatCompletionAssistantMessageParam,
     ChatCompletionChunk,
     ChatCompletionMessageToolCall,
     ChatCompletionToolChoiceOptionParam,
@@ -104,6 +105,11 @@ class BookRecommender(OpenAICall):
 
     response_format: Optional[ResponseFormat] = None
 
+    @property
+    def message_param(self) -> ChatCompletionAssistantMessageParam:
+        """Returns the assistants's response as a message parameter."""
+        return self.message.model_dump(exclude={"function_call"})  # type: ignore
+
     @property
     def choices(self) -> list[Choice]:
         """Returns the array of chat completion choices."""
diff --git a/tests/anthropic/test_types.py b/tests/anthropic/test_types.py
index 1fd7ea860..3adf26031 100644
--- a/tests/anthropic/test_types.py
+++ b/tests/anthropic/test_types.py
@@ -21,6 +21,10 @@ def test_anthropic_call_response(fixture_anthropic_message: Message):
         response=fixture_anthropic_message, start_time=0, end_time=1
     )
     assert response.content == "test"
+    assert response.message_param == {
+        "content": [{"text": "test", "type": "text"}],
+        "role": "assistant",
+    }
     assert response.tools is None
     assert response.tool is None
     assert response.usage is not None
diff --git a/tests/cohere/test_types.py b/tests/cohere/test_types.py
index dbd3df4e7..62767758e 100644
--- a/tests/cohere/test_types.py
+++ b/tests/cohere/test_types.py
@@ -4,6 +4,7 @@
 from cohere.types import (
     ChatCitation,
     ChatDocument,
+    ChatMessage,
     ChatSearchQuery,
     ChatSearchResult,
     NonStreamedChatResponse,
@@ -42,6 +43,11 @@ def test_cohere_call_response_properties(
         response=fixture_non_streamed_response, start_time=0, end_time=0, cost=1
     )
 
+    assert isinstance(call_response.message_param, ChatMessage)
+    assert call_response.message_param == ChatMessage(
+        message="Test response", tool_calls=[fixture_tool_call], role="assistant"
+    )  # type: ignore
+
     assert call_response.content == "Test response"
     assert call_response.search_queries == [fixture_chat_search_query]
     assert call_response.search_results == [fixture_chat_search_result]
diff --git a/tests/gemini/test_types.py b/tests/gemini/test_types.py
index 1d6d99074..9effea9ea 100644
--- a/tests/gemini/test_types.py
+++ b/tests/gemini/test_types.py
@@ -3,6 +3,7 @@
 from typing import Type
 
 import pytest
+from google.ai.generativelanguage_v1beta import Part
 from google.generativeai.types import GenerateContentResponse  # type: ignore
 
 from mirascope.gemini.tools import GeminiTool
@@ -19,6 +20,10 @@ def test_gemini_call_response(
         end_time=0,
         cost=None,
     )
+    assert response.message_param == {
+        "role": "model",
+        "parts": [Part(text="Who is the author?")],
+    }
     assert response.content == "Who is the author?"
     assert response.tools is None
     assert response.tool is None
diff --git a/tests/groq/test_types.py b/tests/groq/test_types.py
index 37205562d..c6682afd7 100644
--- a/tests/groq/test_types.py
+++ b/tests/groq/test_types.py
@@ -22,6 +22,11 @@ def test_groq_call_response(
         start_time=0,
         end_time=0,
     )
+    assert response.message_param == {
+        "role": "assistant",
+        "content": "test content",
+        "tool_calls": [],
+    }
     assert response.content == "test content"
     assert response.tools is None
     assert response.tool is None
diff --git a/tests/mistral/test_types.py b/tests/mistral/test_types.py
index aa6bdd098..addd76a38 100644
--- a/tests/mistral/test_types.py
+++ b/tests/mistral/test_types.py
@@ -24,6 +24,13 @@ def test_mistral_call_response(
         start_time=0,
         end_time=0,
     )
+    assert response.message_param == {
+        "role": "assistant",
+        "content": "test content",
+        "name": None,
+        "tool_call_id": None,
+        "tool_calls": None,
+    }
     assert response.content == "test content"
     assert response.tools is None
     assert response.tool is None
diff --git a/tests/openai/test_types.py b/tests/openai/test_types.py
index 27c58ffdc..bb94c11af 100644
--- a/tests/openai/test_types.py
+++ b/tests/openai/test_types.py
@@ -28,6 +28,11 @@ def test_openai_call_response(fixture_chat_completion: ChatCompletion):
         response=fixture_chat_completion, start_time=0, end_time=0
     )
     choices = fixture_chat_completion.choices
+    assert response.message_param == {
+        "role": "assistant",
+        "content": choices[0].message.content,
+        "tool_calls": None,
+    }
     assert response.choices == choices
     assert response.choice == choices[0]
     assert response.message == choices[0].message