They have their NPOV[1] policy, and seem impressively unbiased to me, given the various divisive situations they have to try to cover.
[1] https://en.m.wikipedia.org/wiki/Wikipedia:Neutral_point_of_v...
As a non American this is very obvious to me.
Even Reuters that was supposedly meant to be a non-biased media outlet is clearly left-leaning at this point
I had a look at the most potentially controversial topics I could find right now, and I say they seem fair. For example: https://www.reuters.com/world/us/dozens-detained-us-immigrat... (on ICE arrests in NY) and https://www.reuters.com/world/middle-east/what-would-wider-r... (on recognition of a Palestinian state).
Indeed, Wikipedia lists it as a good source[1]. It's worth comparing that to outlets like CNN (reliable, but "... talk show content should be treated as opinion pieces. Some editors consider CNN biased, though not to the extent that it affects reliability.") or The Wall Street Journal ("Most editors consider The Wall Street Journal generally reliable for news. Use WP:NEWSBLOG to evaluate the newspaper's blogs, including Washington Wire. Use WP:RSOPINION for opinion pieces.")
[1] https://en.wikipedia.org/wiki/Wikipedia:Reliable_sources/Per... ("Reuters is a news agency. There is consensus that Reuters is generally reliable.")