The best free AI courses and certificates for upskilling in 2026 - and I've tried them all

I've worked with AI for decades and have a master's degree in education. Here are the top free AI courses online that I recommend - and why.
IEEE

Dynamic Graph Variational Sparse Coding for Power Distribution Network Fault Location and Classification

Abstract: Fault location and classification are crucial to the reliable and resilient operation of power distribution networks (PDNs). Current machine learning works cannot provide accurate and ...
IEEE

Question answering over temporal knowledge graphs based on hierarchical semantic extraction

Abstract: Temporal Knowledge Graph Question Answering (TKGQA) aims to address problems with temporal constraints using a Temporal Knowledge Graph (TKG). Existing models often overlook the structural ...
GitHub

zgsm-ai/codebase-indexer

codebase-indexer is the context module of ZGSM (ZhuGe Smart Mind) AI Programming Assistant which running on client. It provides powerful codebase indexing capabilities to support code call graph ...