What are penalties/positives of Alien intelligence

Fool AIs get a -56% to taxes.
Beginner AIs get a -46% to taxes.
Sub-Normal AIs get -24%.
Normal AIs get -18%.
Bright AIs get -10%.
Intelligent AIs get normal tax rate.
Genius AIs get +5% to taxes.
Incredible get +40%.

Of course, based on what I see here at http://www.galciv.com/faq/faq.html , there might be a typo in the AI tax adjustment code that gives a major bonus to the AI players.

Instead of the percentages shown above, the taxes could instead be multiplied by 44, 54, 76, 82, 90, 100, 105, and 140 respecivly for each of the difficulty levels.

The other thing that changes in addition to the economic bonuses/penalties between difficulties is the AI routines used and called for things like noticing hostile buildups, choosing invasion forces, and diplomatic effects on trade values. So, as you increase the difficulty, the AIs will also be more likely to notice you building the party palace next to their capitol or the fleet of dreads parked nearby their main sector. Additionally, the amount you can get for trade will keep decreasing until at Incredible, they'll barely pay you a cent for anything.

i think frogboy adjusted some of the values in various updates after he made the post in the faq.
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Thank you very much. thats what i was looking for