diff --git a/core/providers/anthropic.go b/core/providers/anthropic.go
index fedd65ce5f..eaa81cd07b 100644
--- a/core/providers/anthropic.go
+++ b/core/providers/anthropic.go
@@ -335,8 +335,11 @@ func buildAnthropicImageSourceMap(imgContent *schemas.ImageURLStruct) map[string
 	urlTypeInfo := ExtractURLTypeInfo(sanitizedURL)
 
 	formattedImgContent := AnthropicImageContent{
-		Type:      urlTypeInfo.Type,
-		MediaType: *urlTypeInfo.MediaType,
+		Type: urlTypeInfo.Type,
+	}
+
+	if urlTypeInfo.MediaType != nil {
+		formattedImgContent.MediaType = *urlTypeInfo.MediaType
 	}
 
 	if urlTypeInfo.DataURLWithoutPrefix != nil {
diff --git a/core/providers/bedrock.go b/core/providers/bedrock.go
index c59677f8f1..60dc145da0 100644
--- a/core/providers/bedrock.go
+++ b/core/providers/bedrock.go
@@ -522,8 +522,11 @@ func (provider *BedrockProvider) prepareChatCompletionMessages(messages []schema
 								urlTypeInfo := ExtractURLTypeInfo(sanitizedURL)
 
 								formattedImgContent := AnthropicImageContent{
-									Type:      urlTypeInfo.Type,
-									MediaType: *urlTypeInfo.MediaType,
+									Type: urlTypeInfo.Type,
+								}
+
+								if urlTypeInfo.MediaType != nil {
+									formattedImgContent.MediaType = *urlTypeInfo.MediaType
 								}
 
 								if urlTypeInfo.DataURLWithoutPrefix != nil {
diff --git a/core/providers/cohere.go b/core/providers/cohere.go
index 1467f5e387..5d6445890d 100644
--- a/core/providers/cohere.go
+++ b/core/providers/cohere.go
@@ -459,9 +459,12 @@ func processImageContent(imageContent *schemas.ImageURLStruct) map[string]interf
 	urlTypeInfo := ExtractURLTypeInfo(sanitizedURL)
 
 	formattedImgContent := AnthropicImageContent{
-		Type:      urlTypeInfo.Type,
-		URL:       sanitizedURL,
-		MediaType: *urlTypeInfo.MediaType,
+		Type: urlTypeInfo.Type,
+		URL:  sanitizedURL,
+	}
+
+	if urlTypeInfo.MediaType != nil {
+		formattedImgContent.MediaType = *urlTypeInfo.MediaType
 	}
 
 	return map[string]interface{}{
diff --git a/core/providers/openai.go b/core/providers/openai.go
index 78c563487e..d146472236 100644
--- a/core/providers/openai.go
+++ b/core/providers/openai.go
@@ -212,7 +212,7 @@ func prepareOpenAIChatRequest(messages []schemas.BifrostMessage, params *schemas
 		if msg.Role == schemas.ModelChatMessageRoleAssistant {
 			assistantMessage := map[string]interface{}{
 				"role":    msg.Role,
-				"content": coalesceString(msg.Content.ContentStr),
+				"content": msg.Content,
 			}
 			if msg.AssistantMessage != nil && msg.AssistantMessage.ToolCalls != nil {
 				assistantMessage["tool_calls"] = *msg.AssistantMessage.ToolCalls
diff --git a/core/providers/utils.go b/core/providers/utils.go
index 54a215d624..64331f62f4 100644
--- a/core/providers/utils.go
+++ b/core/providers/utils.go
@@ -338,15 +338,6 @@ func StrPtr(s string) *string {
 	return &s
 }
 
-// coalesceString returns the string value of a pointer to a string, or an empty string if the pointer is nil.
-// This is a helper function for safely handling pointer-to-string values.
-func coalesceString(s *string) string {
-	if s == nil {
-		return ""
-	}
-	return *s
-}
-
 //* IMAGE UTILS *//
 
 // SanitizeImageURL sanitizes and validates an image URL.