alex_greene said:
Signal GK. Sentient silicon chips. AI does exist in the OTU, but it's a natural product of evolution.
That is, by definition, not AI. Unless you want to say we are AI too.
AI (Artificial Intelligence) requires that the Intelligence be created by an Intelligence (the Artificer - i.e. Humans) and hence it is an Artifact (nee Artificial).
The key point imo when talking AI is the boundary between AI and true Intelligence.
AI is by definition a simulation of intelligence. It may convince everyone, itself included, that it is truly intelligent, but it is not. It can only look up responses or trial-and-error answers. If it has a sufficiently advanced program and database it can trial-and-error simulated answers to achieve the best response, which may look very much like true intelligence. It still isn't though.
There needs to be that cognitive leap to insight, or whatever you want to call it, to be true intelligence. I'm not sure that is at all possible for AI. Sci-fi generally takes the view that it requires evolution, though with an advanced AI said evolution can be a matter of years, days, minutes or even seconds depending on the processing power applied.
One story iirc has science build an AI to end wars. They turn it on, the machine does several billions of calculations in a second and comes to the only logical conclusion and solution to end wars. And it immediately uses all the worlds weapons to exterminate mankind.
...what happened there?

Got carried away

Anyway, what was the question? Oh yeah...
For AI in Traveller, you have to make it up. And choose if it is AI (limited) or true intelligence (Sentient) as that may affect how they are treated under law (property or citizen).
For ALFs (Artificial Life Forms - generally not able to procreate though the definition of "life" is and always has been tough to nail down) you could use Robots to do metal men, or stretch you imagination and create synthetic biologicals ("Dr. Frankenstein I presume?"). Perhaps through cloning. Your ALFs may not even know they are artificial (ala "DADoES" aka "Blade Runner"). And again note the legal standing and just how "alive" they are.
Above all: Create, enjoy and have fun!
