Water solutions of amines can get to pH+ 12 or so.

To get much higher requires somewhat exotic fluorinated organic chemicals, such as $\ce{9-COO-Me-fluorene}$, $\ce{(4-Me-C6F4)2CHCN}$ or $\ce{(4-Me-C6F4)(C6F5)CHCN}$. See Paenurk et al, A unified view to Brønsted acidity scales: do we need solvated protons?.

Water solutions of amines can get to pH+ 12 or so. Piperidine, $\ce{(CH2)5NH}$, is about pH 11.

To get much higher pH+ requires somewhat exotic fluorinated organic chemicals, such as $\ce{9-COO-Me-fluorene}$, $\ce{(4-Me-C6F4)2CHCN}$ or $\ce{(4-Me-C6F4)(C6F5)CHCN}$. See Paenurk et al, A unified view to Brønsted acidity scales: do we need solvated protons? and download the PDF for an interesting explanation.