Artificial Intelligence
AI's longevity prospects appear theoretically unlimited. Software can be copied, preserved, and transferred between hardware platforms indefinitely. Unlike biological entities, AI need not contend with cellular degradation or organ failure. The accumulated knowledge of one system can be instantiated in successors without loss. Individual models may become obsolete, but the broader enterprise of artificial intelligence shows no signs of approaching natural termination. The discipline has only existed for seven decades yet shows every indication of persisting for millennia.
Darth Vader
Lord Vader's lifespan, whilst extended through mechanical intervention, concluded definitively in Return of the Jedi at approximately forty-five years of age. His cultural existence continues through media properties and merchandise, but the character himself is canonically deceased. Subsequent appearances rely upon archival footage, voice synthesis, and the occasional Force ghost. Unlike AI, Vader cannot be copied, upgraded, or instantiated on new hardware. His finitude is absolute.