有人体验过mika吗，最新的Grok伴侣？

mika: https://x.com/m?t=AK-RMylKickZQBvwXqJS4Q&s=09

ps: 居然已经推出四位了
xAI's Grok Companions: Ani, Valentine, Rudi, Mika (launched Oct 24, 2025). Anime-style AI assistants with unique personalities.