diff --git a/internal/translator/openai/openai/responses/openai_openai-responses_request.go b/internal/translator/openai/openai/responses/openai_openai-responses_request.go
index 86cf19f8..1fb5ca1f 100644
--- a/internal/translator/openai/openai/responses/openai_openai-responses_request.go
+++ b/internal/translator/openai/openai/responses/openai_openai-responses_request.go
@@ -68,6 +68,9 @@ func ConvertOpenAIResponsesRequestToOpenAIChatCompletions(modelName string, inpu
 			case "message", "":
 				// Handle regular message conversion
 				role := item.Get("role").String()
+				if role == "developer" {
+					role = "user"
+				}
 				message := `{"role":"","content":""}`
 				message, _ = sjson.Set(message, "role", role)
 
@@ -167,7 +170,8 @@ func ConvertOpenAIResponsesRequestToOpenAIChatCompletions(modelName string, inpu
 			// Only function tools need structural conversion because Chat Completions nests details under "function".
 			toolType := tool.Get("type").String()
 			if toolType != "" && toolType != "function" && tool.IsObject() {
-				chatCompletionsTools = append(chatCompletionsTools, tool.Value())
+				// Almost all providers lack built-in tools, so we just ignore them.
+				// chatCompletionsTools = append(chatCompletionsTools, tool.Value())
 				return true
 			}