Tags, compared to other types of pragmatic markers (PMs), are typically considered as separate yet related phenomena and are usually differentiated by their syntactic positions and discourse functions, among other factors. The current work explores this differentiation utilizing 36 sociolinguistic interviews with Spanish-English bilinguals in southern Arizona, USA. Standard language variation and change (LVC) methodologies were used in the extraction, coding, and statistical analyses of this dataset (n = 591), with four PM variants identified for study through an exploratory methodology: the tags no and qué no and the discourse markers (DMs) you know and saber. The results of our analyses indicate that, while utterance position, self-reported gender, and length of residence were all significant in the multivariate analysis, discourse function was dropped from the statistical model. Therefore, we interpret this finding as an indication that functional differences between these two pragmatic resources have been levelled through grammaticalization, demonstrating that for Arizona Spanish, tags and DMs belong in the same functional category of PMs. Furthermore, an analysis of codeswitching behavior triggered by the incoming variant you know demonstrates that it is becoming incorporated into the Spanish pragmatic system, patterning similarly to its counterpart saber in terms of function and position, without attrition of the native variant.