diff --git a/.github/gallery-agent/agent.go b/.github/gallery-agent/agent.go
index ca98c8d8a..66af98d24 100644
--- a/.github/gallery-agent/agent.go
+++ b/.github/gallery-agent/agent.go
@@ -46,6 +46,42 @@ func cleanTextContent(text string) string {
 	return strings.Join(cleanedLines, "\n")
 }
 
+// isModelExisting checks if a specific model ID exists in the gallery using text search
+func isModelExisting(modelID string) (bool, error) {
+	indexPath := getGalleryIndexPath()
+	content, err := os.ReadFile(indexPath)
+	if err != nil {
+		return false, fmt.Errorf("failed to read %s: %w", indexPath, err)
+	}
+
+	contentStr := string(content)
+	// Simple text search - if the model ID appears anywhere in the file, it exists
+	return strings.Contains(contentStr, modelID), nil
+}
+
+// filterExistingModels removes models that already exist in the gallery
+func filterExistingModels(models []ProcessedModel) ([]ProcessedModel, error) {
+	var filteredModels []ProcessedModel
+	for _, model := range models {
+		exists, err := isModelExisting(model.ModelID)
+		if err != nil {
+			fmt.Printf("Error checking if model %s exists: %v, skipping\n", model.ModelID, err)
+			continue
+		}
+
+		if !exists {
+			filteredModels = append(filteredModels, model)
+		} else {
+			fmt.Printf("Skipping existing model: %s\n", model.ModelID)
+		}
+	}
+
+	fmt.Printf("Filtered out %d existing models, %d new models remaining\n",
+		len(models)-len(filteredModels), len(filteredModels))
+
+	return filteredModels, nil
+}
+
 // getGalleryIndexPath returns the gallery index file path, with a default fallback
 func getGalleryIndexPath() string {
 	if galleryIndexPath != "" {
diff --git a/.github/gallery-agent/main.go b/.github/gallery-agent/main.go
index 862045f28..a32672988 100644
--- a/.github/gallery-agent/main.go
+++ b/.github/gallery-agent/main.go
@@ -104,7 +104,18 @@ func main() {
 
 	fmt.Print(models)
 
-	models = models[:maxModelsInt]
+	// Filter out models that already exist in the gallery
+	fmt.Println("Filtering out existing models...")
+	models, err = filterExistingModels(models)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error filtering existing models: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Limit to maxModelsInt after filtering
+	if len(models) > maxModelsInt {
+		models = models[:maxModelsInt]
+	}
 
 	// Generate YAML entries and append to gallery/index.yaml
 	if len(models) > 0 {
@@ -114,6 +125,8 @@ func main() {
 			fmt.Fprintf(os.Stderr, "Error generating YAML entries: %v\n", err)
 			os.Exit(1)
 		}
+	} else {
+		fmt.Println("No new models to add to the gallery.")
 	}
 }