AI Worker VoiceAgent
: How to use it, features, and the business problems it solves
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What is AI Worker VoiceAgent?
A phone-answering AI agent (voice agent) for call centers from AI Shift, Inc. (Shibuya, Tokyo), a wholly owned subsidiary of CyberAgent. Starting with "How can I help you?", it identifies what the caller needs and automates reservations, order taking, FAQ answers and transfers to operators. It combines a "scenario type" that responds along fixed scenarios with an "autonomous dialogue type" in which generative AI builds the conversation, and offers specialized agents for capturing model numbers, names and addresses and for scheduling. Evolved from the "AI Messenger" series offered since 2016 and renewed as part of the "AI Worker" series in December 2025. Used by more than 400 companies and handling over 400,000 calls a month (official website). Pricing is not published and is provided on request.
Business problems it solves
About "AI Worker VoiceAgent"
What is AI Worker VoiceAgent?
AI Worker VoiceAgent is a phone-answering AI agent (voice agent) for call centers from AI Shift, Inc. (Shibuya, Tokyo), a wholly owned subsidiary of CyberAgent. Starting the conversation with a natural "How can I help you?" (「どうされましたか？」), it identifies what the caller needs and automatically handles reservations and orders, answers frequently asked questions, and transfers calls to operators. The company says it aims to automate the whole call center operation, including post-call notes and system integration.
Its predecessor is the "AI Messenger" series that AI Shift has offered since 2016 (including the voicebot AI Messenger Voicebot). On December 15, 2025, AI Shift announced that it would bundle its AI agent services into a renewed "AI Worker" series, and the call center product within it became AI Worker VoiceAgent. The official website cites more than 400 companies using it, over 400,000 calls handled per month, and an average 25% reduction in operator labor costs.
How to use
AI Shift supports the design from the first inquiry through to release. The official page describes the following flow.
- Inquiry and proposal: Receive an introduction and hearing, and get a proposal for how to use it. If you share how you currently handle calls, a demo can be prepared free of charge (the demo does not include issuing a phone number or fine-tuning intonation)
- Application: Review the terms of service and submit an application form to place a formal order
- Kickoff to test design: Organize what will be implemented, create dialogue scenarios and build the AI agents
- Testing to release: After testing, fixes and tuning, announce the phone number or set up call forwarding and go live
It works without integrating with your current phone or call center system. AI Worker VoiceAgent issues a phone number, so callers can dial it directly or you can forward calls from your existing number (official FAQ).
Telling requests apart, starting from "How can I help you?"
Conventional voicebots mostly asked questions in a predefined order. In AI Worker VoiceAgent, an intent identification agent that uses the conversational ability of generative AI understands variations in how callers phrase things (for example, "Do you have a table free?" means a reservation) and identifies the request. By having specialized agents focused only on identifying the request carry the conversation, it says it increases flexibility while reducing the risk of hallucinations (plausible but wrong answers).
- Considering special circumstances: Detects whether the conversation includes special circumstances and switches to a response that takes them into account
- Fewer back-and-forths: Asks only for the information that is missing, cutting unnecessary exchanges
- Accurate capture: Specialized agents capture product numbers, model numbers, names and addresses from context, reducing manual follow-up work
Scenarios for routine requests, generative AI for complex ones
AI Worker VoiceAgent offers two ways to build responses, combined according to the request.
| Scenario type | Autonomous dialogue type (new) | |
|---|---|---|
| How it responds | Follows a fixed scenario, while adapting to question order and vague expressions | Generative AI understands the intent and generates the conversation structure and what to say |
| Suited to | Routine requests such as reservations and orders for specific products | Varied requests such as troubleshooting and orders across a large product range |
| Highlights | Wording and scenarios are set in advance, so it is designed not to hallucinate. Can be built quickly | Follows going back, corrections, interruptions and sudden questions, and handles edge cases |
| Track record and team | 400+ companies, 1,000+ lines in operation | Multiple PoCs run. Research and hands-on support by FDEs and PMs |
The autonomous dialogue type is positioned to bring complex requests that could not be fully built into scenarios within the scope of automation.
AI keeps evaluating, improving and monitoring response quality
Together with CyberAgent's research organization "AI Lab", AI Shift has developed technology that automatically evaluates and continuously improves AI Worker VoiceAgent's response quality, and has filed a patent application for it.
01Evaluate
Automatically evaluates the results of voice AI conversations and identifies points that can be improved.
02Improve
Based on the evaluation, improves the prompts that control responses and automatically expands test cases to widen coverage.
03Monitor
Verifies the effect and keeps reflecting improvements by detecting changes in operating policy or caller trends. The company describes it as a mechanism that is less affected by changes in AI models.
Features
01Specialized agents (standard)
- Intent identification agent — Identifies the request starting from "How can I help you?"
- FAQ answering agent — Answers frequently asked questions
- Model number hearing agent — Captures model and serial numbers mixing letters and digits
- Name hearing agent — Captures the caller's name
- Scheduling agent — Arranges dates for reservations and the like
02Options
- External integration — Integration with external systems (with a track record; details on request)
- SMS/email sending — Send SMS or email during or after calls
- ZENRIN address recognition — Capturing addresses
- Operator transfer — Connect the call to a human agent
- Toll-free and push-button input — Toll-free numbers and keypad input
03Operations
- Concurrent calls — 50 lines as standard (expandable; when calls are forwarded, the number of lines at the forwarding source is the limit)
- Elderly callers and dialects — Many deployments where elderly callers are common; dialects are handled through synonym registration and similar settings
- Call blocking — From October 2026, blocking calls from certain overseas numbers became standard for all customers
The official website also describes using the conversation data gathered by AI Worker VoiceAgent with other services in the same series for VOC (voice of the customer) analysis, business process improvement and maintaining FAQs and knowledge.
Pricing
AI Worker VoiceAgent's pricing is not published on the official website (as of October 2026).
| Item | Details |
|---|---|
| Price | Not published. Provided via service material download or a consultation |
| Demo | A free demo can be prepared based on your current phone handling (excluding phone number issuance and fine-tuning of intonation) |
| Application | Formal order by reviewing the terms of service and submitting an application form |
There is no free plan or self-service sign-up; it is a business service proposed individually to each company.
Security and data handling
The official FAQ explains that servers are managed at two locations in Japan and that the company holds external certifications such as ISMS. It also says it can respond to each company's security checklist. The calls run on Twilio's "Twilio Programmable Voice" (CyberAgent press release, December 2025).
Track record and reputation
Case studies and announcements on the official website include deployments in restaurants, finance, local government and manufacturing.
01Automating reservation and order calls
- Monogatari Corporation (Yakiniku King) — Across 230 stores nationwide, automatically handles waitlist reservations, reservations for later dates, confirmations and cancellations, and inquiries, automating 150,000 calls per month
- Watami (ワタミの宅食) — Automating phone handling, such as judging whether delivery is possible, and preventing lost opportunities
- リンベル (Ringbell) — Introduced for phone orders of catalog gifts, automating everything from order taking to shipping preparation (announced September 2026)
02Handling complex inquiries
- OMRON Social Solutions — Recognition accuracy for model and serial numbers mixing letters and digits exceeded 80%, and the number of calls the voicebot can handle grew by up to 2.4 times
- JMC — Automating a wide range of inquiries in the education and IT field
03Finance and local government
- Resona Bank — The voice agent answers frequently asked questions outside business hours
- Hokuriku Bank — Trial deployment for inquiries from corporate customers (announced May 2026)
- Yamagata City and Kobe City Tax Department — Automating My Number Card issuance reservations (Yamagata), and handling tax inquiries in partnership with NTT Marketing Act ProCX (Kobe; announced June 2026)
As external recognition, in December 2025 it was the only Japanese company among the 20 winners selected from more than 750 applicants for Twilio's "AI Startup Searchlight Awards 2025". In May 2026, it was also announced that the product had been adopted by ギグワークスアドバリュー (Gig Works Advalue)'s AI phone reception service "Reception AI レセッパ".
How it differs from other AI phone-answering services
AI Worker VoiceAgent is a business service mainly for call centers of large companies and local governments, with AI Shift supporting everything from design to operation. Its distinguishing points are specialized agents for intent identification, model numbers, addresses and more, and the combination of the scenario type and the autonomous dialogue type to automate even complex calls.
| Product | Provider | Pricing (public information) | Highlights |
|---|---|---|---|
| AI Worker VoiceAgent | AI Shift, Inc. (CyberAgent group) | Not published (on request) | Specialized agents such as intent identification; scenario and autonomous dialogue types combined. 400+ companies |
| IVRy | IVRy Inc. | Free plan from ¥0/month; paid from ¥3,980/month (excl. tax) | Automated phone answering. Start on the free plan and introduce it by forwarding from your current number |
| AIさくらさん | Tifana.com | Initial fee plus monthly fee (provided individually) | Product family for phone, chat and avatars. Hand over documents and a dedicated CS team runs operations |
| Monobot | TRING, Inc. (US) | Credit-based; Starter from $200/month | A platform to build voice and chat AI agents without code |
| KARAKURI | KARAKURI Inc. | GeN from ¥500,000 initial and ¥400,000/month | AI agents specialized in customer support, mainly chat and operator support |
The columns for other products reflect the information on each product page as of when it was checked.
If you want to start small with phone handling at stores or smaller businesses, IVRy is a candidate; if you want to hand over chat and signage channels along with phone, consider AIさくらさん. If you want to automate large call volumes at a call center or complex requests that require capturing model numbers and addresses, AI Worker VoiceAgent is a candidate.
FAQ
How much does AI Worker VoiceAgent cost?
Pricing is not published on the official website. It is provided via a service material download or a consultation. If you share how you currently handle calls, a free demo can be prepared.
How is it related to AI Messenger Voicebot?
AI Worker VoiceAgent is the evolution of the "AI Messenger" series that AI Shift has offered since 2016 into an AI agent for call centers. Its renewal as part of the "AI Worker" series was announced in December 2025.
Can I keep my current phone number?
Yes. AI Worker VoiceAgent issues a phone number, so callers can dial it directly or you can forward calls from the number you use now. Integration with your call center system is not required.
Can it handle dialects and elderly callers?
According to the official FAQ, it has many deployments in phone handling with elderly callers, and dialects can be handled through synonym registration and similar settings.
The information on this page is based on what was publicly available on the official site as of October 2026. Please check the official site for the latest specifications and pricing.
