Artificial intelligence (AI) remains volatile for many companies and will foster disruptive transformation processes in many industries. Companies face continuous challenges assessing AI-readiness, current state, and AI-based requirements for change. Assessment of AI applications, services and products can be built on maturity models (MM). In this case, specialized AI-based MM (AIMM) are needed. With this article, we intend to advance the AIMM development. Aspects of small and medium sized companies (SME), privacy, and ethics are in focus. We will present the current state of AIMM, its interim, and practical evaluation and an outlook on further AIMM developments.