diff --git a/packages/coding-agent/src/core/model-registry.ts b/packages/coding-agent/src/core/model-registry.ts
index 798b8f8c..f2584aa9 100644
--- a/packages/coding-agent/src/core/model-registry.ts
+++ b/packages/coding-agent/src/core/model-registry.ts
@@ -213,6 +213,13 @@ function formatValidationPath(error: TLocalizedValidationError): string {
 	return path || "root";
 }
 
+/** Strip `//` line comments and trailing commas from JSON, leaving string literals untouched. */
+function stripJsonComments(input: string): string {
+	return input
+		.replace(/"(?:\\.|[^"\\])*"|\/\/[^\n]*/g, (m) => (m[0] === '"' ? m : ""))
+		.replace(/"(?:\\.|[^"\\])*"|,(\s*[}\]])/g, (m, tail) => tail ?? (m[0] === '"' ? m : ""));
+}
+
 /** Provider override config (baseUrl, compat) without request auth/headers */
 interface ProviderOverride {
 	baseUrl?: string;
@@ -450,7 +457,7 @@ export class ModelRegistry {
 
 		try {
 			const content = readFileSync(modelsJsonPath, "utf-8");
-			const parsed = JSON.parse(content) as unknown;
+			const parsed = JSON.parse(stripJsonComments(content)) as unknown;
 
 			if (!validateModelsConfig.Check(parsed)) {
 				const errors =