Anthropic is quietly testing full Simplified and Traditional Chinese interface localization for Claude on web and desktop. This update goes beyond existing conversational support by translating menus and buttons, removing the need for browser translations. The rollout is unannounced and undocumented, suggesting a test phase. Notably, UI localization does not mean Claude is available in mainland China, where it remains excluded, unlike Singapore and Taiwan. This move signals a strategic shift to treat Chinese-speaking users natively rather than through translation, enhancing accessibility without changing regional service availability.