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  3. 7 AI Simultaneous Interpretation Tools Compared (August 2026): Is the Built-in Feature in Teams and Zoom Enough?

7 AI Simultaneous Interpretation Tools Compared (August 2026): Is the Built-in Feature in Teams and Zoom Enough?

Search for AI interpretation tools and you get lists of 25 apps mixing consumer travel tools with enterprise meeting software. The real question is whether the built-in feature in the Teams or Zoom plan you already pay for is enough — and if not, what is missing. With Microsoft Teams shipping its Interpreter agent in January 2026 and Google Meet making speech translation generally available in February, that question now has an answer. This article pins down what all three platforms can and cannot do, then compares seven dedicated tools — Sentio, VoicePing, kotoba, DeepL Voice, Wordly, Interprefy, and KUDO — by how they capture audio, what they output, and how they charge.

AI simultaneous interpretation tools compared. An illustration showing an English utterance and its Japanese translated caption displayed side by side

Search for "AI simultaneous interpretation tools" and you get lists of "25 best apps" that mix consumer travel apps with enterprise meeting tools. That is not what someone facing a recurring meeting with an overseas office actually needs to know.

Is the built-in feature in the Teams or Zoom subscription you already pay for enough? And if not, what exactly is missing? Since Microsoft Teams shipped its Interpreter agent in January 2026 and Google Meet made speech translation generally available in February, that question finally has a researchable answer.

This article first pins down what Teams, Zoom, and Google Meet can and cannot do on their own, then compares seven dedicated tools — four from Japan, three from overseas for the cases where the built-in feature falls short. Pricing, language coverage, and availability follow what each official site published as of 22 August 2026.


The short version

If you already have Teams with M365 Copilot, or a higher-tier Zoom plan, try the built-in feature first. Teams' Interpreter agent does speech-to-speech interpretation in 9 languages and Zoom's Translated Captions covers 35 languages, so you can start at no extra cost or around $5 a month.

If you cannot put a bot in the meeting, or you also need in-person conversations covered, look at Sentio (from ¥3,300/month) or kotoba (5 free hours a month). Both capture browser tab audio or microphone input directly, so nothing appears in the participant list and nothing is asked of the other side.

If you run multilingual events for hundreds of people, or have sessions where a mistranslation is expensive, consider Wordly (hour packages with every language included), Interprefy, or KUDO (human interpreters and AI on one contract). They also handle venue-monitor captions and per-session assignment of human versus AI.

If you are unsure, the least wasteful order is: try the built-in feature on one real meeting, write down what was missing, then choose a dedicated tool against that list.


First, decide whether the built-in feature is enough

All three major platforms shipped real-time translation in 2026. But availability and approach differ substantially between them.

Microsoft TeamsZoomGoogle Meet
Feature nameInterpreter agentTranslated CaptionsSpeech translation
OutputSpeech to speechCaptionsSpeech to speech
Languages9 (Chinese, English, French, German, Italian, Japanese, Korean, Portuguese, Spanish)35English ⇄ Spanish, French, German, Portuguese (Brazil), Italian — 5 languages
AvailabilityJanuary 2026 (Teams calls)Available nowGenerally available for business in February 2026
What you needMicrosoft 365 Copilot licenceIncluded in Business Plus, Premier, Enterprise Essentials, and Enterprise Plus; $5 per user per month as an add-on on other paid plansAn eligible Google Workspace plan
NotesVoice simulation can generate interpreted audio in the speaker's own voice. Teams Rooms on Windows gets 20 hours per room per month with a Teams Rooms Pro licenceAttendees can choose their own speaking language inside the meetingGemini 3.5 Live Translate (70+ languages, 2,000+ pairs) entered private preview in June 2026; general availability and pricing are not yet confirmed

Zoom AI Companion does not translate. It transcribes and summarizes meetings, but translated captions are a separate feature called Translated Captions. This is an easy place to assume "we pay for AI Companion, so translation must be included."

Four conditions where the built-in feature runs out

If any of these apply, the built-in feature will not meet your requirements. This is the fork where a dedicated tool starts to make sense.

01Your language is not on the list

Teams covers 9 languages and Google Meet 5, all routed through English. Vietnamese, Thai, and Indonesian — the languages manufacturing and construction firms actually need — are outside that range. Zoom's 35 languages are broader, but the output is captions only, never audio.

02You need in-person meetings covered too

All the built-in features only work inside a web meeting. A trade show booth, a visitor at reception, a discussion on site — none of these are in scope. That is the territory of dedicated tools that can capture microphone input directly.

03You need to distribute captions to attendees

Delivering captions in each attendee's own language to their own device at an event of tens or thousands of people — or putting captions on a venue monitor — is simply not what a web conferencing tool's built-in feature was designed for.

04The meeting tool varies by counterparty

When internal meetings run on Teams and clients use Zoom, the built-in feature works on some meetings and not others. If you want one consistent way of working across platforms, a dedicated tool is more even.


Seven AI interpretation tools compared

These are the options when the built-in feature is not enough — four Japanese, three international — lined up by how they capture audio, what they output, language coverage, and pricing. All figures follow the official sites as of 22 August 2026; Japanese prices include consumption tax.

ToolVendor (country)Audio captureOutputLanguagesFree tierPricing
SentioPocketalk (Japan)Browser tab audio / microphone (no bot joins)Captions + read-aloud44 into 7730 min/month¥3,300/month or ¥33,000/year
VoicePingVoicePing (Japan)PC audio / meeting bot / in-person / mobileCaptions + read-aloud + minutes45 (per the price list)90 min/monthFrom ¥3,163/month; events from ¥33,000/day
kotobaKotoba Technologies Japan (Japan)Smartphone appCaptions + read-aloud21 input / 13 output5 hours/month$99/month personal; ¥15,000/device/month business
DeepL VoiceDeepL SE (Germany)A DeepL bot joins the meetingCaptions (speech-to-speech coming soon)40+Free trialUndisclosed (quoted individually)
WordlyWordly (USA)Platform integrations / direct AV feedCaptions + read-aloud + transcripts + summariesDozens of languages, 3,000+ pairsAnnual hour packages (from 10 hours)
InterprefyInterprefy AG (Switzerland)80+ platforms / AV and broadcastCaptions + read-aloud + human interpreters6,000+ caption language combinationsUndisclosed (quoted individually)
KUDOKUDO (USA)Native Teams integration / widget / AVCaptions + read-aloud + human interpreters70+ AI; 200+ including humanUndisclosed (plans with no annual subscription)

How to choose: four decision axes

Of everything in that table, these four decide whether a tool is viable at all, in order. Price can come last.

1. Can a bot join your meetings?

This is the first gate. Meeting translation tools split into two camps by how they capture audio.

Meeting bot approach

  • The tool joins as a participant
  • External sales calls require explaining it to the other side
  • Your organization must permit external participants to join
  • Recording and minutes are easier to automate
  • Applies to: DeepL Voice, VoicePing (Meeting Bot), kotoba (Meeting Bot)

Device-side capture

  • Nothing appears in the participant list
  • Asks nothing of the other party
  • Often needs no setting changes or IT approval
  • Works for in-person meetings as-is
  • Applies to: Sentio, VoicePing (PC audio), kotoba (app)

For organizations that block external guests, the bot approach makes a settings change a precondition for adoption. DeepL Voice's own help centre states that the organization must permit external participants for the bot to join. Settle this before comparing price or accuracy.

Note that VoicePing offers both, so you can use the bot internally and PC audio for external calls.

2. Captions only, or spoken output too?

Whether reading captions is workable depends on the meeting. In meetings driven by a deck, there is often no attention to spare for text on screen. Those need synthesized speech.

As of August 2026, watch out for DeepL Voice here. Speech-to-speech translation in for Online Meetings is still listed as "coming soon" on the official site; what ships today is captions only. If you need spoken output now, look elsewhere.

3. Do you need minutes kept?

Interpretation and minutes are separate problems, but solving both in one product has a direct cost impact.

  • Kept: VoicePing (searchable across meeting logs), Wordly (transcripts and summaries), Interprefy (Media Hub)
  • Deliberately not kept: DeepL Voice never stores transcripts or translations permanently and deletes them after the call. A security strength, but a constraint if you want an archive

If minutes are the real goal, pairing with an AI meeting-minutes tool such as Notta or Rimo Voice is also an option.

4. Match the pricing model to how you will use it

Choosing on pricing model rather than headline price is the more reliable approach.

ModelFitsTools
Flat monthlyPredictable recurring use, such as a weekly meetingSentio, kotoba (business), VoicePing (Premium)
Metered by minutesMeeting volume varies month to monthVoicePing (450 to 2,000 minutes)
Annual hour packageYou can estimate total annual meeting hoursWordly (10 to 500+ hours)
Day rateOne-off eventsVoicePing event plan (from ¥33,000/day)
No annual commitmentFrequency unclear, or you want one trial runKUDO (Marketplace, Pay As You Go), Sentio (¥3,300 one-off)
Quoted individuallyCompany-wide rollout, complex requirementsDeepL Voice, Interprefy, KUDO (Annual)

The seven tools in detail

Here is each tool in turn. The order runs from the easiest to evaluate — that is, the ones that publish prices and can start small — to the rest.

SentioSentio | Interprets your screen's audio and your own voice, without a bot in the meeting

Pocketalk Corporation, known for its handheld translator, offers this as its software-only AI simultaneous interpretation service. It runs entirely in the browser, with no app to install.

Its defining trait is how it captures audio. Two modes — "interpret microphone input" and "interpret PC audio" — mean no translation bot joins the meeting. Nothing appears in the participant list, so external sales calls need no explanation and organizations that block third-party tools from joining can still use it. In-person meetings are covered by the same tool.

It interprets speech in 44 languages into 77, and the output can be pushed to 50+ attendees by QR code or URL. Interpretation typically appears within 5 to 10 seconds.

Sentio's mode selection screen, showing two stacked cards: interpret microphone input on top and interpret PC audio below
Source: Sentio official manual
Pricing
Free trial ¥0 (30 min/month) / paid trial ¥3,300 one-off (unlimited for one month) / Premium ¥3,300 month or ¥33,000 year / For School ¥55,000 year / Conference quoted (all tax included)
Audio capture
Microphone input / PC and browser audio (no bot joins)
Spoken output
Yes
Minutes
History can be reviewed; no summary or minutes generation
Best for
External calls where a bot cannot join; covering in-person and online with one tool

See the full Sentio profile

VoicePingVoicePing | A Japanese platform that consolidates interpretation and minutes

VoicePing Inc.'s multilingual communication platform provides real-time transcription and translation across web meetings, in-person meetings, trade shows, audio and video files, and a virtual office.

Of the seven tools here it is the only one with both the meeting-bot approach and PC audio capture — bot for internal meetings, PC audio for external calls.

Its other strength is Meeting Logs: each meeting leaves a recording, utterances by speaker, source alongside translation, an AI summary, and action items, all searchable across meetings. Reviewing works without a separate AI meeting-minutes contract. With "VoicePing 3.0" in July 2026 the company shipped in-house models, publishing an English-to-Japanese translation score of 87.2 and an average WER of 19.3% across five languages.

VoicePing's admin screen. Under a heading about consolidating multilingual communication, a dashboard shows Live Translation, Virtual Office, and File Transcribe cards, with Meeting Logs, Dictionary, Expo Mode, and MCP/API features arranged around it
Source: VoicePing official (VoicePing 3.0 press release)
Pricing
Free ¥0 (90 min/month) / Personal from ¥3,163 month (450 min) / Small from ¥4,125 month / Premium ¥33,000 month (annual) / Enterprise ¥990 per user per month (50 users minimum). Event interpretation from ¥33,000/day (all tax included)
Audio capture
PC audio / meeting bot / in-person / mobile
Spoken output
Yes
Minutes
Yes — summaries, decisions, and action items generated automatically, searchable across meeting logs
Best for
Consolidating interpretation and minutes; switching approach between internal and external; budgeting events by the day

See the full VoicePing profile

kotobakotoba | Look-ahead interpretation that arrives before the speaker finishes

A Japanese AI simultaneous interpretation app from Kotoba Technologies Japan, Inc., running on a single iOS or Android phone.

Its design centres not on accuracy but on when the translation appears. The in-house speech foundation model "Koto" predicts where the conversation is heading and puts the translation out before the speaker finishes. Look-ahead runs up to roughly 0.5 seconds, with at most about 1 second of latency from the start of an utterance.

The official site puts it plainly: the more the translation lags, the more you miss the moment to respond, and the more you lose control of the conversation. The claim is that broken timing hurts a sales meeting more than an imperfect word choice. Its free tier of 5 hours a month is the most generous of the seven, so you can judge how the latency feels on real material.

kotoba promotional image. A headline about translation arriving before you finish speaking, three figures for 0.5-second look-ahead, sub-1-second translation speed, and 5 languages, with a live-translation phone screen on the right
Source: kotoba simultaneous interpretation app official site
Pricing
Free ¥0 (5 hours/month) / Unlimited $99 month or $999.99 year (iOS) / Enterprise ¥15,000 per device per month / Enterprise Volume quoted
Audio capture
Smartphone app (Meeting Bot for web meetings)
Spoken output
Yes
Minutes
Saved as translation history (Unlimited and above)
Caveat
The Meeting Bot is Enterprise Volume only. An individual plan cannot cover web meeting translation
Best for
In-person sales calls and trade shows carried by a phone in your hand; keeping the rhythm of a reply

See the full kotoba profile

DeepL VoiceDeepL Voice | Extends the DeepL you already run company-wide into meetings

The real-time voice translation solution from DeepL SE, maker of the DeepL translator. It works with Microsoft Teams, Zoom Meetings, and Google Meet, and can show a different caption language per participant within one meeting. Caption targets are not limited to the languages supported for voice input — any language available in DeepL translation can be chosen.

The reason to pick it is clear: an organization already standardized on DeepL can extend the same translation quality and security baseline into its meetings. Transcripts and translations are never stored permanently and are deleted once the call ends.

Two things to confirm before adopting, though. A DeepL bot joins the meeting, so the organization must permit external participants. And speech-to-speech translation in for Online Meetings is still listed as "coming soon" as of August 2026 — what ships today is captions only.

DeepL Voice for In-Person Conversations. Japanese utterances with their Polish translations and Polish utterances with their Japanese translations alternate, with Japanese and Polish language switches and microphone buttons at the bottom
Source: DeepL official site (the screen shown is DeepL Voice for In-Person Conversations)
Pricing
Undisclosed; quoted per customer by translation volume, product, and usage (a free trial path exists)
Audio capture
A DeepL bot joins the meeting (external participants must be permitted)
Spoken output
Coming soon (captions only today)
Minutes
Full transcript and translation can be downloaded, but nothing is retained server-side
Security
ISO/IEC 27001:2022, SOC 2 Type 2, GDPR and HIPAA compliant, SSO
Best for
Organizations already running DeepL company-wide that want one consistent quality and security baseline

See the full DeepL Voice profile

WordlyWordly | The event standard where adding languages does not change the price

An AI translation and captioning platform for meetings and events from Wordly, Inc. in the United States. It pioneered this market in 2019 and has been used by over 6 million people across 120 countries.

Because it starts from conferences of hundreds to thousands of people, its focus is the machinery of running an event: attendees reading captions on their own device, captions on venue monitors, audio fed straight from the sound mixer. Only the host needs an account; attendees download nothing, create no account, and share no personal information.

Its charging model is equally distinctive: translation, captions, transcripts, and summaries, plus every supported language, all in one price. Costs do not stack as languages multiply, so budgeting gets easier precisely when an event is most multilingual. Compliance with accessibility mandates such as VPAT, WCAG, and the EAA also matters for government and education buyers.

The Wordly Portal dashboard, showing available and scheduled time, monthly and yearly usage charts, and cards for session history and schedule
Source: Wordly official site
Pricing
Annual hour packages: Starter 10 hours / Pro 25 / Pro+ 50 / Corporate 100 / Corporate+ 250 / Enterprise 500+. Amounts undisclosed (quoted)
Audio capture
Platform integrations / web and mobile apps / RTMPS / direct sound mixer feed
Spoken output
Yes (attendees choose captions or audio)
Minutes
Yes — transcript and summary per session
Charging note
No rounding up (a 30-minute session consumes 30 minutes). Unused hours may roll over
Best for
Running multilingual events and all-hands throughout the year; accessibility compliance requirements

See the full Wordly profile

InterprefyInterprefy | Assigns human interpreters and AI session by session

An enterprise multilingual communication platform from Interprefy AG of Switzerland. Where many AI interpretation tools promise to replace humans with AI, Interprefy holds professional interpreters and AI translation side by side, on one contract and one platform.

What makes that practical is that each session is assigned to human, AI, or hybrid before the event. Sessions with a regulator present go to human interpreters; parallel tracks and rare languages go to AI. During the event AI holds continuity if a feed drops, and humans backstop the AI on the riskiest sessions.

It brings over 6,000 professional interpreters (sign language included), captions across more than 6,000 language combinations, and integrations with over 80 meeting and event platforms. Built in Switzerland and hosted in Europe, with an explicit commitment never to train on customer data.

The Interprefy platform. A laptop shows the interpretation session management screen with interpreting and speaker switching, the speaker's video, a participant list, and event chat; a phone screen sits in front
Source: Interprefy official site
Pricing
Undisclosed; quoted by language count, session hours, and modality (human / AI / hybrid)
Audio capture
80+ meeting and event platforms, on-site AV, broadcast equipment
Human interpreters
Yes — over 6,000 professionals, sign language included
Minutes
Recordings, transcripts, and summaries via the Media Hub
Security
ISO 27001, European data residency, no training on your data, EU AI Act ready
Best for
Programmes including sessions where a mistranslation is expensive; data location as a procurement requirement

See the full Interprefy profile

KUDOKUDO | Book interpreters on screen, with plans that need no annual contract

A live speech translation and captioning platform from KUDO, Inc. in the United States. It is structured in two tiers: AI speech translation covering over 70 languages around the clock, with a marketplace of more than 12,000 professional interpreters bookable on demand on top. Counting human interpreters, coverage reaches over 200 languages including sign languages.

Its distinguishing trait is that arranging interpreters has been turned into a purchase experience. Choose a platform, the languages, and the interpreters, and the confirmation screen shows the language pairs and duration. What takes days through an agency is done on the spot.

For attendees, it is just picking a language in the browser. Each language in the list carries an icon marking AI translation or human interpretation, so mixing the two within one event confuses nobody.

A KUDO meeting screen. A laptop shows the speaker's video with English captions and an interpretation language list — Original audio, English, Español, Français, Tiếng Việt — while a phone in front shows Spanish captions
Source: KUDO official site
Pricing
Undisclosed. Three shapes: Marketplace (no annual subscription, interpreters on demand) / Pay As You Go (one-off events, no annual subscription) / Annual Plan (from 50 hours a year)
Audio capture
Native integration for Microsoft Teams; embedded widget for Zoom, Webex, ON24 and others; venue AV supported
Human interpreters
Yes — 12,000+ bookable on demand, 200+ languages including sign
Spoken output
Yes (an AI-generated voice imitating natural speech flow can be selected)
Best for
A human/AI split that changes per event; unclear frequency and a wish to try one event first; Teams via native integration

See the full KUDO profile


By use case

01Recurring meetings with overseas offices (internal, web)

Try the built-in feature first. If the languages fall short, Sentio or VoicePing. If you also want minutes, VoicePing consolidates both.

02Sales calls with overseas customers (external, online or in person)

No-bot capture is the premise. Sentio (browser only) or kotoba (a single phone). If keeping the rhythm of a reply matters, kotoba's look-ahead keeps latency down.

03Trade shows and on-site conversations

The kotoba app, or VoicePing's Expo Mode. Decide on whether you need to hand attendees captions by QR code.

04Multilingual conferences for hundreds of people

Wordly (price does not move as languages multiply) or the VoicePing event plan (day rates are published). If venue-monitor captions or accessibility compliance are requirements, Wordly.

05Sessions where a mistranslation is expensive (IR, regulators, medical)

Interprefy or KUDO. Human interpreters and AI can be assigned per session and consolidated into one contract. If European data residency is a requirement, Interprefy.

06You have already rolled out DeepL company-wide

DeepL Voice. It extends the same translation quality and security baseline into meetings. Just confirm that a bot can join your meetings, and that spoken output is still forthcoming.


In closing

In 2026 AI simultaneous interpretation shifted from "is this worth trying" to "how much do we cover with the built-in feature, and where do we add a dedicated tool." Work the decision in this order.

  1. Try the built-in feature on one real meeting. Most organizations already have Teams, Zoom, or Google Meet available
  2. Write down what was missing — languages, in-person, caption distribution, or cross-platform consistency
  3. Settle the bot question first. It halves the candidate list
  4. Decide whether you need spoken output, and whether you need minutes
  5. Match the pricing model to how you will actually use it, last

The free tiers are 30 minutes a month for Sentio, 90 minutes for VoicePing, and 5 hours for kotoba. Each is enough to check accuracy and latency on real meetings, so one trial run will settle the question faster than reading another comparison article.

Information in this article is based on what each official site published as of 22 August 2026. Please check the official sites for current specifications and pricing.

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