The G sharp minor thirteenth chord is a 6-note chord consisting of the notes G#, B, D#, F#, A# and E#.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as G#m13.
Chords that are a subset of G#m13. These contain less notes but all of them are included in G#m13.
In case you prefer a non-interactive variant of the chord chart, we've embedded a PNG image below that shows the notes for the the G#m13 chord. Feel free to save or share the image as needed.