You can trade quality for speed by using a model with less parameters.
Currently as of Feb. 2023 Pythia would be your best option, but keep in mind that it should only be used for research purposes. 
It uses the same tokenzier as GPT-NeoX and it is available from 70m to 12b parameters.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence