Real-time translation is for the moments people make decisions together — a live meeting where everyone needs to follow the discussion as it happens. Async translation is for the record: a searchable transcript and summary that someone reads after the call, in another time zone, in their own language. Most global teams need both, and using the wrong one is where the friction comes from. Here's how to tell which a given situation calls for.
When real-time wins
If the value is in the back-and-forth — a planning meeting, a customer call, a decision that needs everyone's input now — you need live translation. Reading a perfect transcript tomorrow doesn't help if the decision was made today without half the room able to follow. Real-time captions let people contribute at the speed of the conversation, in their own language, while it's still a conversation.
The thing to watch for is latency: translation that lags too far behind speech stops being real-time and starts being a distraction. Roughly two seconds keeps a discussion flowing; much more and people give up reading and just nod along — which is the failure mode you were trying to avoid.
When async wins
A lot of "meetings" don't actually need to be live for everyone. A team split across Singapore, Berlin, and San Francisco can't all be awake at once, and forcing it produces a 6 a.m. call where someone is too tired to think. For status, context, and most updates, a translated transcript and summary — read when it's daytime for you, in your language — is better than the live call: searchable, skimmable, and free of the second-language fatigue of following a fast meeting in real time.
Async is also the durable layer. The live call ends; the record is what you go back to. If the transcript is accurate and translated, it serves everyone who wasn't there or couldn't follow live.
You usually need both, from one source
The trap is treating these as separate tools. The cleanest setup is one system that does the live translation and produces the translated record, so the transcript matches what people saw on the call and nobody re-keys anything. Live captions for the people in the room; a searchable, translated transcript and summary for everyone who reads it later.
That's how Sageio works: add a bot to the Google Meet invite, everyone gets real-time captions in their own language (about two seconds behind speech), and within about five minutes of the call ending there's a searchable transcript and an AI summary, shared at the host's discretion. Same source, both modes. (Today this runs on Google Meet; Zoom and Microsoft Teams support is coming soon.)
Frequently asked questions
What's the difference between real-time and async meeting translation? Real-time translation delivers captions live during the meeting so people can follow and contribute as it happens. Async translation is the record afterward — a translated, searchable transcript and summary someone reads later, often in another time zone and their own language.
When should a global team use real-time vs async? Use real-time when the value is in live back-and-forth — decisions, planning, customer calls — so nobody is shut out of the discussion. Use async for status and context that doesn't need everyone awake at once; a translated transcript read on your own schedule is often better than a 6 a.m. call.
Do we have to choose one? No — and ideally you don't use two separate tools. One system that does live translation and produces the translated transcript means the record matches the call and you get both modes from a single source.
How fast does real-time translation need to be? About two seconds keeps a discussion flowing. Much more lag and people stop reading the captions and lose the thread, which defeats the purpose of doing it live.
What does it cost to try? Every plan starts with a free 60-minute trial, no credit card required. After that, Professional is $49/month and Teams is $99 per seat/month (annual billing includes 2 months free); Enterprise is custom-priced.
The rule of thumb: if the decision happens in the room, you need real-time; if it's read later, you need a good translated record. A global team needs both — preferably from one source so they always agree. Add the bot to one real meeting and watch both halves work.