AI live captions and real-time translation for events
AI live captions and real-time translation on any event screen. One operator, 18 source and 69 target languages, browser-based setup. Free trial.
What AI live captioning for events is
AI live captioning turns speech into readable captions during a session and can show translated text alongside the source language on a venue screen, a shared display, or an attendee phone. With Questro, an operator starts transcription from any microphone the browser can reach — a built-in mic, a USB microphone, or an audio interface — sets the source and target languages, and opens a display link. Captions appear as the speaker talks and the translated line follows. There is no interpreter booth, no receiver hardware, and nothing to install: the display link is a web page, so the same captions can serve the room, a livestream layout, and remote attendees at the same time.
Script-aware context so names and terms survive
Live captions succeed or fail on proper nouns. Upload a script, speaker notes, an agenda, or a plain terminology list before the session and Questro extracts the names, brands, acronyms, and technical terms from it, then applies them to speech recognition and translation so the words that matter are prepared before captions go live. For prepared talks, script alignment also acts as a fallback when live audio is incomplete or delayed. The script does not have to be final: a draft, an outline, or a list of terms is enough to change how a technical talk reads on screen.
Where AI captions fit, and where they do not
AI captions are text, not audio. Nobody hears a synthesized voice and there is no earpiece or receiver to hand out. They fit when the goal is scalable, readable access across many screens and attendees: international conferences without a booth, hybrid sessions where remote viewers need to follow along, and rooms with deaf or hard-of-hearing attendees. They are support, not a guarantee. For high-stakes legal, medical, or diplomatic interpretation, where a single mistranslation carries real consequences, pair AI captions with human review or use a professional interpreter. Time is metered: the Free plan includes 15 AI Interpreter minutes, Pro includes 2 hours per month, and the 7-Day Event Pass includes 10 hours.
Key details
Stream source captions and a translated line to venue screens, shared displays, or attendee phones.
Start transcription from any microphone the browser can reach, including USB mics and audio interfaces.
Upload a script, speaker notes, agenda, or terminology list so names and acronyms are prepared in advance.
Set the source language and the translated output per session from the browser.
Free includes 15 AI Interpreter minutes; Pro includes 2 hours per month and the 7-Day Event Pass includes 10 hours.
Use human review or a professional interpreter for high-stakes legal, medical, or diplomatic sessions.
Common questions
How do I show live translated captions at an event?
Create an AI Interpreter session, choose the language the speaker will use and the language you want on screen, then open the display link on the venue screen or share it with attendees. Start recording and captions stream as the speaker talks, with the translated line shown alongside the source text.
What microphone do I need for AI live captions?
Any microphone the browser can use: a laptop built-in mic, a USB microphone, or a mixer or audio interface feeding the machine running the operator page. There is no dedicated captioning hardware to rent.
Can attendees read the captions on their own phones?
Yes. The display link opens in a mobile browser, so attendees can follow large source captions with translated lines underneath from anywhere in the room, and remote viewers can open the same link beside a stream.
How much AI Interpreter time is included in each plan?
The Free plan includes 15 AI Interpreter minutes as a trial. Pro includes 2 AI Interpreter hours per month. The 7-Day Event Pass, a one-time $99 purchase, includes 10 AI Interpreter hours. Time is counted while a recording session is listening, and the remaining balance is shown in Settings.
Does AI captioning replace a human interpreter?
No. Questro produces readable text rather than spoken interpretation, and it is built for scalable caption and language access rather than guaranteed accuracy. For high-stakes legal, medical, or diplomatic sessions, use human review or a professional interpreter.