Live Caption Studio

Live Caption
Studio

Live demonstrationA keynote, captioned as it is spoken. Synthetic.
The demonstration loops through four lines of a keynote: “Good evening, and welcome to the conference”; “Tonight’s sessions run in English and French”; a line spoken in French, “Bonsoir à nos invités de Montréal”, translated underneath as “Good evening to our guests from Montréal”; and “We’ll take questions from the room and from the web”.

Multilingual live captions and translation for your screens, your stream and your audience’s phones. Built to run on your own computer.

Join the beta

From the microphone to every screen

Nothing travels further than the cable to your computer.

  1. Microphone on stage

    Someone speaks. Your sound team already has the signal.

  2. Sound console

    A clean speech feed goes out: a post-fader aux, not the room or the music mix.

  3. LCS Box or your computer

    Speech becomes text, and text is translated, on the machine beside you.

  4. Every output

    The same caption, at the same moment.

    • Welcome, everyone.
      Projector screen
    • Key/FillWelcome, everyone.
      Video switcher Key/Fill ATEM
    • CCES · Bienvenidos a todos.
      Stream YouTube captions, OBS, vMix
    • FR · Bienvenue à toutes et à tous.
      Phones Scan the QR code
Illustration. The languages shown are examples; what is planned for the beta is listed under Languages.

How it works →

One caption, every output

The same caption goes to every output.

Planned for version 1.0. Live Caption Studio is in development; the beta is how we test each output on real shows.

Live Caption Studio is built to run entirely on the computer in your booth. It never sends audio to a cloud service. The only network calls are license activation/renewal and update checks, and both can be turned off. YouTube captions, if you turn them on, send caption text (never audio) to YouTube.

Your audio stays in the room.

Live Caption Studio is built to run with no internet at show time. Free needs no activation and works offline indefinitely. One-time licenses work offline indefinitely on the purchased major version after a single activation (online, or by file from another device). Subscriptions renew once a month, online or by license file, with a 7-day grace; without renewal, the installation then continues as Free.

Works without Wi-Fi.

Captions in the language being spoken and a live translation underneath, on every output. Built for speakers who switch language mid-sentence. French and English first; more are planned.

Many languages, live.

Multilingual live captions and translation

Tell us which language your room needs.

French and English captions and two-way text translation are planned first. See the language order and the evaluation required before support is confirmed.

Languages →

Made for every room

Wherever people need to read what is said.

Made by Neural Twiin for the people who run the show, on any stage and in any room.

Built for
Windows or Linux with an NVIDIA RTX card, a Mac with Apple silicon, or the LCS Box
Internet
No internet at show time. Free: no activation. One-time: activate once. Monthly: renew online or by file, with a 7-day grace
Needs
A clean speech feed from your sound console
Price
$499 USD once per computer, or $39 a month

What you need

A computer with the right graphics, and a clean feed from your sound console.

Live Caption Studio requires an NVIDIA RTX graphics card (Windows or Linux) or a Mac with Apple silicon.

Don’t want to build a PC? → LCS Box

Planned requirements, confirmed by our evaluation before the beta.

What you need →

A clean speech feed

Live Caption Studio needs a clean speech feed: the microphone routed directly from your sound console (a post-fader aux or matrix), not the room or the music mix. We make no accuracy promise for speech over a music bed.

One price, once

Buy it once per computer and keep it, with every update inside the version you buy. Or pay by the month for a single event. Or use it free, with a small tag under the captions.

Pricing →

499 US dollars, once, per computer

  • Per computer, yours to keep
  • Every output and every supported language
  • Every update within the version; the next major version is optional, at $249
  • Or $39 a month · or free, with the tag shown above
Join the beta

LCS Box

Planned · final specification to be confirmed

Hardware being specified; price to be announced.

Questions

Ask us anything about your rig.

Straight answers, including the ones we can’t give yet. Anything else, ask in the beta form.

Does any audio leave the building?

No. Live Caption Studio is built to transcribe and translate on your computer, and it never sends audio to a cloud service. The only network calls are license activation/renewal and update checks, and both can be turned off.

Which languages does it support?

French and English are planned first for the beta, including speakers who switch between them. Spanish is planned next, then Italian, Portuguese and Haitian Creole. We call a language supported only after we have measured it.

What do I need to plug in?

A clean speech feed: the microphones routed from your sound console on a post-fader aux or matrix, not the room or the music mix. We make no accuracy promise for speech over a music bed.

Which computer does it run on?

Windows or Linux with an NVIDIA RTX graphics card, or a Mac with Apple silicon. The planned minimum for captions is an RTX 3060 12 GB or RTX 4060 8 GB, or an M2, M3 or M4 Mac, each with 16 GB of memory. Our evaluation confirms these before the beta.

How fast and how accurate is it?

We will publish measured delay and accuracy, with the date, the hardware and the method, before we quote a number. Until then, we don’t.

Can I try it before it ships?

Join the beta. We are looking for rooms of every kind (stages, offices, classrooms, councils and churches) to run it on real shows and tell us what breaks.

Captions at your next event?

Join the beta or See what you need

A short form: your room, your gear, your languages. No payment.