Roboto Flex

Roboto Flex gives designers a focused option for building a consistent typographic system. In the BeauFonts catalog it is grouped as a sans serif family, with 1 listed weight: 400. It also includes variable-font support, which can allow more fine-grained weight choices where the source files support it. Previewing the same phrase across its weights can reveal whether it gives your layout the contrast and pacing you need.

For language coverage, the source lists cyrillic, cyrillic-ext, greek, latin, latin-ext, vietnamese. That information is useful when a design includes more than basic Latin text, but a final build should always be checked against the actual characters, punctuation, and symbols you plan to publish. Roboto Flex can be explored here as a working specimen: adjust the size, compare the listed weights, and copy the generated CSS only after confirming the source license fits your use.