Starithm is a real-time platform that aggregates and structures multi-messenger astronomy alerts from NASA's General Coordinates Network (GCN). It ingests both machine-readable GCN Kafka streaming notices and human-authored GCN Circulars, unifying them into a single structured view per canonical transient event. An AI pipeline extracts measurements and entities from Circular free text using fine-tuned LLMs, enabling structured querying across historically unstructured data. It also has the capability to summarising the entire event history. As of early 2026, the platform has processed over 9,000 GCN Circulars and 2,100 streaming notices spanning 739 canonical events, covering gravitational wave candidates, gamma-ray bursts, neutrino events, and other high-energy transients. Starithm is accessible via a web interface at https://starithm.ai.