Can players record their own voice lines in gta online?

The available verified source provides only general information about the series’ development, gameplay elements such as driving and shooting, and narrative structure. It does not mention any feature allowing players to record or upload custom voice lines in GTA Online. Without additional reliable documentation or developer statements confirming such a capability, we cannot assert that the feature exists. Therefore, based on the current evidence, it is not possible to confirm that players can record their own voice lines in GTA Online.