- Guscon
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- Exalted Mythic Member
Apparently the more information she gets/processes/somethings then the shorter her life span will be. My estimation is that Cortana is around 6 months old, less than a year at most. All the Halo story so far has been set in 2552, and started in September. If Cortana was created for the scrubbed mission to capture a Prophet, then I guess she'd have been created around the Summer of 2552.
However, remember that if they use this in the story, they will have to introduce the concept of Smart A.I life spans, as it has only been mentioned in the books.