React or Angular in 2026? The honest answer has nothing to do with syntax. Both frameworks rebuilt their reactivity, and when written well, raw performance is basically a tie. What still differs is the architectural bet each one makes about how the UI updates. Two different bets React is a rendering library plus an ecosystem you assemble yourself. React 19 adds a compiler that auto-memoises, so you stop hand-writing useMemo and useCallback — but the component function still re-runs, then React diffs the virtual DOM and patches what changed. Angular is a full framework, batteries included. Angular 19 makes Signals the default: every signal tracks which views read it, so a change updates only those nodes — no virtual DOM, no parent-tree re-render. A benchmark that makes it concrete Toggle one row's selection in a 10,000-row table: React: the .map() re-runs, rows are memoised → ~12ms on a mid-range phone Angular: flips two class bindings, no diff → ~0.8ms Fine-grained reactivity wins when you have many leaves.…