Unicaption
Real-time AI captioning and translation copilot for human interpreters. Live speech-to-text with automatic language detection across 60+ languages and instant translation — in the browser, desktop app, or Chrome extension. End-to-end encrypted; audio is never stored. A copilot, not a replacement.
What it is
Unicaption is a live captioning and translation tool built for professional interpreters — medical, legal, government, and business. It listens to the call, shows every word as text in real time, and translates on the fly, so the interpreter can glance instead of straining to catch every word. It works in the browser alongside Zoom, Teams, or any agency platform; nothing to install for the web app.
Key numbers:
- 160,000+ minutes captioned and 1.2M+ words translated on the platform
- Real-time streaming — text appears almost as the speaker talks
- 60+ languages with automatic language detection (no manual switching mid-session)
- Built-in terminology for healthcare, legal, and government interpretation
Privacy: sessions are end-to-end encrypted, audio is never stored, and transcripts are deleted when the session ends — nothing is retained.
Positioning: Unicaption is a copilot, not a replacement. Interpretation requires judgment, empathy, and cultural understanding — Unicaption handles the cognitive load so the interpreter can focus on the human work.
Getting started
- Open unicaption.com and sign up with email or Google. Free trial, no credit card required.
- Choose source and target languages in the Playground — or let auto-detect handle it. Languages can be changed any time mid-session.
- Click Start. Words appear as speakers talk. You can be in a live session in under 30 seconds.
Full walkthrough: Getting started guide (markdown) · HTML version with screenshots.
Features
- Live transcription — real-time speech-to-text over WebSocket, auto-detected language, under 200 ms latency.
- Real-time translation — side-by-side live translation of the transcript into your target language.
- AI notes and context — auto-captured session context, names, and numbers so nothing is lost mid-call.
- Terminology dictionary — custom dictionary plus built-in medical, legal, and government terminology.
- Works with your platform — browser-based; runs alongside Zoom, Teams, and any conferencing or agency platform.
- Dark/light themes, usage dashboard — live minute tracking at unicaption.com/usage.
Platforms
- Web app — unicaption.com/playground, no installation.
- macOS desktop app — download .dmg; native app with menu bar integration.
- Windows desktop app — download installer; runs in the background, appears when you need it.
- Chrome extension — Unicaption Live Subtitles; overlay on any video call.
Pricing
Monthly / annual (per month, billed annually). Free trial on sign-up, no credit card required. Manage plans at unicaption.com/billing.
| Plan | Monthly | Annual | Hours/month | Translations | Model | Notes |
|---|---|---|---|---|---|---|
| Instant | $9 | $7/mo | 10 | 5,000 | Apex Gen-1 | 30-minute free trial included |
| Basic | $49 | $45/mo | 60 | 15,000 | Apex Gen-2 | For freelance interpreters |
| Pro | $89 | $85/mo | 150 | 50,000 | Apex Gen-2 | Auto AI features, live AI translation, dedicated support |
| Ultra | $149 | $145/mo | 300 | Unlimited | Apex Gen-2.5 | Advanced AI features, real-time AI translation, dedicated agent |
Upgrade flow: unicaption.com/pricing → checkout via Stripe. Referral program at unicaption.com/referral.
FAQ
Is there a free trial?
Yes — free on sign-up, no credit card required. Test the features before you decide.
Do you store my session audio?
No. Unicaption does not store any audio. Sessions are end-to-end encrypted and automatically deleted when they end — nothing is retained.
Which languages does Unicaption support?
60+ languages, detected automatically. No manual switching mid-session.
Does it work with Zoom, Teams, and other platforms?
Yes. Unicaption works in your browser alongside Zoom, Teams, and your agency's platform. No installation required. Step-by-step guide, including what the platforms' own translated captions require: Live translated captions in Zoom, Teams, and Google Meet.
How accurate is the transcription?
Real-time captions from state-of-the-art streaming speech models tuned for professional terminology — text appears almost as the speaker talks.
Will AI replace my job as an interpreter?
No. Unicaption is a copilot, not a replacement. Interpretation requires judgment, empathy, and cultural understanding. Unicaption handles the cognitive load so you can bring more of yourself to every session. The full argument — what AI does well in 2026, what it cannot do, and how working interpreters adapt: Will AI replace human interpreters?.
Can I use Unicaption for medical and legal calls?
Yes. Built-in terminology for healthcare, legal, and government interpretation. Sessions are end-to-end encrypted, audio is never stored, and transcripts are deleted at session end — nothing from a confidential call outlives the session. The five questions to ask any captioning vendor before a medical call: HIPAA-compliant live captioning.
How do I start?
Go to unicaption.com, enter your email — no credit card needed. Live session in under 30 seconds.
How Unicaption compares
Unicaption occupies a specific slot in the live captioning market: real-time transcription and real-time translation, side by side, in the browser. Most captioning tools transcribe one language; interpreting is a two-language problem.
| Tool | Stated accuracy | Real-time | Live translation | Best for |
|---|---|---|---|---|
| Unicaption | Modern streaming STT (no published benchmark) | Yes, streaming | Yes, side by side | Interpreters working live in two languages |
| Verbit | Up to 99% with human review | Live captioning available | Separate service | Legal, government, higher education |
| Rev | 96%+ on AI alone | Streaming API | No | Developers; English recorded transcription |
| Otter.ai | Up to 95% claimed (~85–90% independently reported) | Yes | No | English meeting notes |
| Zoom AI Companion | Not published | Yes, inside Zoom only | Yes, translated captions | Organisations standardised on Zoom |
| Google Meet / Microsoft Teams built-in | Not published | Yes, in-platform | Limited | A free baseline |
Accuracy figures are each vendor's own published claim as of July 2026, measured on audio each vendor chose. They are not directly comparable. Anything claiming 95%+ sits in the same broad tier; the axes that genuinely differ are whether the tool runs live, whether it translates, and whether you can teach it your vocabulary.
Two distinctions that matter when choosing:
- Live vs recorded. Recorded transcription can re-read audio, use a slower model, and pass work to a human editor — that is where 99% claims come from. Live transcription must emit words while the speaker is still talking. For interpreting, presenting, or hearings, only live matters.
- Transcription vs translation. Otter.ai and Rev are transcription-first. Unicaption and Zoom's translated captions produce real-time translated output; of those two, only Unicaption supports custom terminology and runs alongside any platform.
Full comparison: Best live captioning and transcription tools in 2026 · markdown.
Read
- Site index for LLMs (llms.txt) — one-line index of every page
- Static machine page (machine.html) — this document as semantic HTML, no JavaScript required
- Machine view — this document rendered in the site UI, with copy-to-clipboard
- Blog — guides and product updates
- HIPAA-compliant live captioning — the five vendor questions for medical calls · HTML
- Live translated captions in Zoom, Teams, and Google Meet — per-platform steps and the platform-independent method · HTML
- Will AI replace human interpreters? — an honest 2026 answer · HTML
- Changelog — what shipped, release by release
- Privacy · Terms · Cookies
Contact
- Email: hello@unicaption.com
- Sign up: unicaption.com/auth