If your meetings run in Korean, the shortlist is short. Otter.ai does not support Korean at all. Notta and Granola both list Korean, so language coverage by itself no longer separates these tools. What separates them is accuracy in the language you actually speak, and Tiro is the only one of the four that publishes per-language accuracy: 98% in clean audio and over 90% in noisy rooms for Korean, measured by us. The table below is built from each vendor's own documentation so every cell can be checked.
Why Multilingual Meeting Transcription Matters
In today's global business landscape, multilingual meetings are the norm, not the exception. Accurate transcription, especially in languages like Korean and Japanese, isn't a nice-to-have. It's a critical productivity tool. Language coverage has largely caught up across the market, so the useful question is narrower: which tools support Korean at all, and which of them publish how accurate they are. That’s where a superior alternative, Tiro, comes into play.
Where These Tools Actually Stand Today
Three things still differ between them, and all three can be checked against the vendors' own pages.
Korean support is not universal. Otter.ai lists English, Spanish, French, German, Japanese and Chinese (Simplified), with German and Chinese in beta. Korean is not on that list.
Support is not accuracy. Notta lists 58 languages for monolingual transcription and Granola lists 17 across desktop and mobile. None of the three publishes an accuracy figure for any individual language. A language appearing on a list tells you nothing about how it performs on your audio.
When the summary appears. Tiro summarizes while the conversation is still running, not only after it ends, so the notes are usable inside the meeting.
Why Tiro Wins in Korean & Japanese
Tiro stands out by specifically excelling in areas critical for Korean and Japanese multilingual meetings:
Speech Recognition Accuracy
Tiro is built based on Korean and Japanese speech, significantly surpassing competitors in this area. Fewer transcription errors mean clearer communication and fewer misunderstandings.
Real-time Translation
Unlike Notta and Otter, Tiro offers live translation, making follow-ups actionable and immediate.
Multi-language Output
Tiro effortlessly transcribes and translates across Korean, Japanese, and English in real-time, making it ideal for cross-border collaboration.
Ease of Use (Web & Desktop & Mobile)
Tiro’s intuitive interface ensures smooth operations, regardless of technical proficiency. No steep learning curve here.
Industry Use Cases
Tiro is already trusted by:
Multinational corporations managing English-Korean and English-Japanese business meetings.
Academic institutions requiring accurate lecture transcription.
Tech companies collaborating cross-culturally in real-time.
Language Support Compared: Tiro, Otter.ai, Notta, Granola
Every cell below comes from the vendor's own documentation, linked in Sources at the end. Verified 2026-08-24.
| Tiro | Otter.ai | Notta | Granola |
|---|---|---|---|---|
Korean transcription | Yes | Not supported | Yes | Yes (mobile) |
Japanese transcription | Yes | Yes | Yes | Yes |
Languages listed by the vendor | 15+ | 6 (German and Chinese in beta) | 58 (monolingual) | 17 across desktop and mobile |
Per-language accuracy published | Yes. Korean 98% clean audio, over 90% noisy | Not published | Not published | Not published |
Accuracy grades are deliberately absent for the other three. They do not publish them, and inventing a grade for someone else's product is not a comparison.
Use Cases by Region & Language
Korean & Japanese Meetings: Tiro (Highly Recommended)
English-focused Meetings: Otter (Recommended)
General multilingual support: Tiro (Highly Recommended)
Final Recommendation
If accuracy and real-time multilingual capabilities in Korean and Japanese are your priority, Tiro clearly emerges as the superior Notta alternative. It’s specifically engineered for flawless multilingual collaboration.
Ready to Experience Superior Multilingual Transcription?
Say goodbye to transcription errors and hello to seamless multilingual meetings.
Frequently Asked Questions
Which AI notetakers support Korean transcription?
Tiro, Notta and Granola all list Korean. Otter.ai does not: its supported languages are English, Spanish, French, German, Japanese and Chinese (Simplified). On Granola, Korean is available on iOS and Android.
Is there an Otter.ai alternative that supports Korean and Japanese?
Yes. Tiro transcribes both Korean and Japanese and translates across 15 or more languages inside the same session. Notta and Granola also cover both languages, so the deciding factor is accuracy on your own audio rather than the language list.
What is the best Japanese transcription app?
All four tools transcribe Japanese, so a single winner cannot be declared from language lists alone. Tiro is the only one of the four that publishes per-language accuracy figures. The practical test is to run the same recording through the candidates and compare the output yourself.
Can Tiro handle real-time multilingual meetings?
Yes. Transcription, translation and summarization all run while the meeting is still in progress, across 15 or more languages.
Is Tiro certified for enterprise security reviews?
Tiro has published its SOC 2 Type 2 and ISO/IEC 27001:2022 announcements, and the current scope is documented on the security page.
Is Tiro user-friendly for non-technical users?
Absolutely. Tiro’s intuitive design requires minimal setup, making it easy for everyone to use.
Sources
Otter.ai supported languages: help.otter.ai. Japanese launch announcement: otter.ai/blog
Notta supported languages: support.notta.ai
Granola multi-language support: docs.granola.ai
Tiro accuracy figures, pricing and language coverage: tiro.ooo/pricing
Vendor documentation changes. Every cell above was checked on 2026-08-24. If you find a cell that no longer matches the linked page, it is out of date and we want to know.
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