State-Passive vs. Process-Passive

Two passives for two different moments

Telugu doesn't have two grammaticalized passive auxiliaries the way German does, but it draws essentially the same line using two different constructions. తెరవబడుతోంది uses Telugu's genuine passive auxiliary -బడు (badu, a close cousin of Tamil's -படு and structurally near-identical to German's werden-passive) to foreground the ongoing action. తెరిచి ఉంది, by contrast, drops the -బడు passive entirely and instead pairs the perfective converb తెరిచి ('having opened') with the existential ఉంది ('is') — the same ఉంది that shows up in Telugu's possession and dative-experiencer sentences — to describe the resulting state rather than the event. So the German werden/sein split maps onto a Telugu split between an explicit passive-auxiliary verb and a converb-plus-ఉంది stative construction: the same underlying distinction between 'happening now' and 'already the case', built with different grammatical tools than German uses, but tools you already reach for constantly in everyday Telugu.