On the composition of the participants a campaign of Vytautas reported all our sources. The most detailed lists provide S1LSI, the order of partisipants, in my opinion, has a certain weight (from major to minor parties).
1. Khan Tokhtamysh and his court.
9. 50 princes.
Now we are faced with the question – where are Russians? We are so used to refer to the Grand Duchy of Lithuania as "Lithuanian-Russian", which automatically suggests an important role of Russians in every Lithuanian case. But here all the sources are silent about the Russian detachments, including S1LSI – the source of which is difficult to suspect hostility to Russia.
About the number of troops something tells Posilge: 100 lances of Prussia and 400 – from Poland.
About Tatar army reports only S1LSI, but it says little. The fact that the army was led by Khan himself, can bring significant value that was assigned to a campaign, and a large force assembled by the Tatars for it.
Full text of section – in the Ukrainian version.