ALT The API A thread is a function call on another core: const t = new Thread((a, b) => { return expensive(a, b); }, x, y); t.join(); // blocks, returns fn's value or rethrows its exception await t.asyncJoin(); // same, as a promise; never blocks Thread.current; // your Thread t.id; // engine thread id, main is 0

ALT Promotional graphic on a black background featuring the large blue text "Gemma 4 12B" above smaller white text that reads "Unified Transformer." A glowing blue ribbon containing multi-modal icons (representing images, text, and audio) flows from the left into a central point, branching out into a complex, luminous blue neural network map on the right.