Are you in a spousal or de facto relationship with an Australian citizen, permanent resident or eligible New Zealand citizen? If so, you may be eligible for a partner visa.
As a holder of a Partner visa allows you to remain in Australia on a permanent basis provided that you satisfy the criteria for the permanent stage.
You will be eligible for a permanent visa so long as your relationship remains ongoing at the time of assessment (unless exemptions apply). If you have been a long-term spousal or de facto relationship, you might be able to get a permanent visa right away.