In general, Howspace AI can handle multiple languages but in the case of summaries, it will try to determine the dominant language and summarise using that.
Tip: If you get a summary in a language you didn't expect, try prompting! That way you can add a command to use a specific language.
Behavior depends on the feature
Word cloud
Word cloud shows multiple languages and counts the words. You'll end up seeing words in multiple different languages. You might see words like "kieli" (Finnish for "language") and "language" in the same cloud.
Summary
Summary will take everything into account, but the summary will be produced in the language the AI determines to be dominant.
Workspace analytics
Workspace analytics will treat topics of different languages separately and does not translate them.