diff --git a/internal/entity/models/jiekouai.go b/internal/entity/models/jiekouai.go
index 638c46f47c..6a81a1bbc3 100644
--- a/internal/entity/models/jiekouai.go
+++ b/internal/entity/models/jiekouai.go
@@ -292,6 +292,7 @@ func (j *JieKouAIModel) ChatStreamlyWithSender(modelName string, messages []Mess
 
 	// SSE parsing: read line by line
 	scanner := bufio.NewScanner(resp.Body)
+	scanner.Buffer(make([]byte, 64*1024), 1024*1024)
 	for scanner.Scan() {
 		line := scanner.Text()
 
diff --git a/internal/entity/models/sse_scanner_buffer_test.go b/internal/entity/models/sse_scanner_buffer_test.go
index 792c69e587..c458921739 100644
--- a/internal/entity/models/sse_scanner_buffer_test.go
+++ b/internal/entity/models/sse_scanner_buffer_test.go
@@ -59,6 +59,7 @@ func TestChatStreamLargeChunkNotTruncated(t *testing.T) {
 		{"lmstudio", build(func(b map[string]string, s URLSuffix) chatStreamer { return NewLmStudioModel(b, s) })},
 		{"gitee", build(func(b map[string]string, s URLSuffix) chatStreamer { return NewGiteeModel(b, s) })},
 		{"tokenhub", build(func(b map[string]string, s URLSuffix) chatStreamer { return NewTokenHubModel(b, s) })},
+		{"jiekouai", build(func(b map[string]string, s URLSuffix) chatStreamer { return NewJieKouAIModel(b, s) })},
 	}
 
 	for _, tc := range cases {