Here some numbers about the piece values Atomystica uses. The program differs between Opening, Middlegame and Endgame.
The values are in centipawns.
Opening
Queen 575
Bishop 60
Knight 75
Rook 250
Pawn 100
Middlegame
Queen 575
Bishop 50
Knight 50
Rook 250
Pawn 100
Endgame
Queen 675
Bishop 50
Knight 50
Rook 250
Pawn 100
These are only the basic material values. In some endgames a rook gets a massiv malus to avoid senseless pawn sacrifices because a rook as more then two pawns more worth then a bishop in example. On the other hand a passed pawn can earn a lot of points by just stepping up the board.
As you can see the values of the minor pieces are very low. But we know, the wrong bishop is sometimes totally worthless, so thats the idea behind that. The base for that is also a document i linked in this “Atomic in science” blog entry.
Now the values change. So in a closed position knights are stronger than bishops, often stronger than rooks even. In half open-open positions bishops are stronger than knights but 2 bishops basically increase each others strength.