Live Captions vs. Live Translation: What's the Difference?
Live captions and live translation solve different problems — captions make speech readable for someone who can already understand the language spoken; translation makes it understandable for someone who can't.
Same-language captions
Most video call platforms that advertise "live captions" mean same-language captions: speech is transcribed to text in the language it was spoken in, and shown on screen as subtitles. This helps with accessibility, noisy environments, or accents that are harder to follow by ear — but it does nothing for a participant who doesn't speak the language being captioned in the first place.
This is also the feature most built-in "AI meeting assistant" tools ship by default, since transcription alone is a simpler problem than transcription plus translation.
Live translation
Live translation adds a second step after transcription: converting the transcribed text into a different language before displaying it. This is what actually helps two people who don't share a language follow the same conversation — one participant might see captions in the language spoken, while another sees a live translation into their own.
It's a strictly harder problem than same-language captioning, since it inherits all of transcription's challenges (background noise, accents, overlapping speech) and adds translation's own — word order differences, terms with no direct equivalent, and the risk of a subtly wrong translation reading just as confidently as a correct one.
Why the distinction matters when choosing a tool
If a platform advertises "live captions" without specifying translation, assume it's same-language only until proven otherwise — it's the more common and much simpler feature to build. For a genuinely multilingual conversation, the tool needs to explicitly support translation between the specific language pair involved, not just transcription.
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