Quick translation service for Gainsight PX engagements?

Has anyone had success locating an ‘on-demand’ translation service for engagements? Our company utilizes a service, but they have a rather high minimum content requirement for translations, and the engagements we create don’t come near that minimum.

I considered Google translate, but we’ve received complaints about the quality of the translated content. Additionally, the manual effort to translate content across at least 16 languages would be too time-consuming, even though the content itself is relatively short.