* Predictive translation is supported in subtitle mode only. Latency varies by environment, language, and speaking style.
Experience speaks louder than words. See how predictive translation keeps conversations flowing without interruption.
Unlike other translation apps, we predict conversational flow to keep dialogue moving — while pursuing accuracy at every step.
Supports 21 input languages and 13 output languages, centered on Japanese, English, Chinese, Korean, and Spanish. For the main translation languages, we use Koto, Kotoba's proprietary voice AI model, while selected other language pairs also combine external AI translation models.
AI predicts conversational flow and delivers translation up to 0.5 seconds ahead — reducing wait time and keeping conversations natural.
The longer translation takes, the more you lose your timing and control of the conversation. With latency under 1 second, you never miss a beat.
For negotiations, meetings, or customer service. Install, speak, understand.
Focused on the experience of conversations that never stop flowing.
We started using it for weekly meetings with overseas suppliers. Translation appears before the speaker finishes, so the conversation never loses its rhythm. The experience is completely different.
I use it every time in negotiations with English-speaking clients. Being able to respond on time is a game changer. Conversations flow naturally even in meetings.
Used as a support tool for on-site interpretation at exhibitions. Even if I miss something, I can catch it in the text. Being able to review later is also really helpful.
Start for free. We also offer an Unlimited plan for professionals and an Enterprise plan for organizations.
Common questions about predictive translation, latency, and supported languages.
Information security
Kotoba Technologies Japan's information security management system is certified to ISO/IEC 27001:2022 by GCERTI Co., Ltd.
Certification scope: information security management system.
Depending on the PR partnership, complimentary usage may be available. For international conferences, exhibitions, seminars, and other multilingual events. Distribute the app to attendees for real-time subtitles and live translation.
* After submitting the form, our team will follow up with you.
Predictive translation with low latency preserves your conversational timing. Try it in the app.
Download from the App Store or Google Play to experience predictive translation in real conversations.
Centralized admin, unlimited translation, and priority support are available on the Enterprise plan.