[Discussion] Name of a (possibly non-existent) paper stating vision-language pretraining can improve performance on text-only tasks?

I'm trying to remember the name of a paper I think I read, though there's a chance this paper doesn't exist and I'm just mixing it up with something else. In the off-chance I'm remembering it correctly, I think it trained a vision-language model and showed that it outperformed a unimodal text-only model on language tasks? So the idea of the paper was vision-language pretraining doesn't just help in vision-language tasks, but actually improves performance on text-only tasks. If this …

language machinelearning paper performance text vision