# Fill mask model that supports multiple masks

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**Category:** Beginners\
**Created:** [October 20, 2022, 6:14pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Ffill-mask-model-that-supports-multiple-masks%2F24744 "2022-10-20T18:14:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cnut1648](https://avatars.discourse-cdn.com/v4/letter/c/77aa72/32.png) [@cnut1648](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fcnut1648)%5C
**Post date:** [October 20, 2022, 6:14pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Ffill-mask-model-that-supports-multiple-masks%2F24744%2F1 "2022-10-20T18:14:56Z")

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Hello, I recall that there was a model that supports multiple masks by introducing several special mask tokens eg , but I can’t remember now and cannot find it.  
Does anyone know which model is it? Thanks.

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**Author:** ![cnut1648](https://avatars.discourse-cdn.com/v4/letter/c/77aa72/32.png) [@cnut1648](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fcnut1648)%5C
**Post date:** [October 20, 2022, 6:19pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Ffill-mask-model-that-supports-multiple-masks%2F24744%2F2 "2022-10-20T18:19:14Z")

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Oh nvm turns out that it is T5.  
During training it masks multiple tokens, but not **during inference**.  
Are there models that support multiple masks? Is the current best method to feed one mask at a time?