購入前に試せます: ストーリーを貼り付けるだけで、全キャストとボイスを無料で確認できます。生成は$3.90から(買い切り)。

AI Voice Agent - Website & Phone Support

Build a real-time AI voice agent: ASR, LLM, TTS and turn-taking in one sub-second pipeline, 70+ languages, tool calling and knowledge-base grounding.

最終更新: 2026-10-18

A VoiceSmiths AI voice agent holds real-time spoken conversations for your business: it connects to your knowledge base and APIs, greets website visitors and callers in the voice you choose, answers in under a second, and speaks 70+ languages. There is a live demo on the homepage; to put one on your own site or phone line, open a ticket and we build it and hand you an embed snippet or a phone number.

Talk to it first

The quickest way to judge it is to talk to it: a real demo agent lives in the Voice Agent tab of the homepage studio. Press the button, ask anything, and it listens, thinks and answers in voice. The latency and tone you hear is what your own site would get.

Here is how it opens:

ボイス: 甜美治愈中国語11秒
原稿:你好,我是声匠的语音助手。你可以直接问我价格、功能,或者让我帮你挑一个合适的音色。

Beyond a greeting, it has to finish the job. This is what a confirmed booking sounds like:

ボイス: 甜美治愈中国語17秒
原稿:好的,已经帮你约到明天上午十点,地址我发到你手机上了。如果临时有变,提前一小时告诉我就行。还有什么需要帮忙的吗?

How an AI voice agent works

Every exchange runs four stages, all in real time:

  1. Listen: speech recognition turns your words into text, with interruption support
  2. Think: an LLM answers using the system prompt, knowledge base and conversation history
  3. Speak: the reply is synthesized instantly in your chosen voice, 70+ languages
  4. Turn-taking: a dedicated model decides whether you've finished, avoiding talk-overs and dead air

End-to-end response stays under a second — conversational pacing close to a human's.

Three things that make it useful

  • Knowledge base: upload product docs, FAQs and policies; the agent answers from your content, not imagination
  • Tool calling: wire your APIs (order lookup, rescheduling, ticket creation) and the agent executes mid-conversation
  • Your voice: reuse any voice from the library, including a cloned brand voice

How it differs from a keypad menu

A classic phone menu makes callers sit through a list of options and press numbers. An AI voice agent lets them say what they need: once it understands, it looks up the order, moves the booking or files the ticket during the call, and callers can cut in to change their mind. Genuinely complex cases still go to a person.

On a website it works the same way. Instead of digging through a help center, visitors ask out loud and the agent answers from your knowledge base.

Where an AI voice agent fits

ScenarioValue
Website voice support24/7 front line, escalates complex cases
Phone reception / IVR upgradeTwilio / SIP, replaces keypad menus
Language practiceMultilingual conversation with corrections
Interview & sales-pitch drillsRole-play, repeat as needed
Product toursLike the homepage demo — explains your product for you

What to prepare before launch

A custom build needs a few things from you. The more specific they are, the faster it goes live:

  1. Knowledge files: product docs, FAQs and policies. Write out the questions people actually ask with the answers you want given, and remove outdated policies first, because the agent answers from what you give it
  2. The APIs to call: for each action, such as order lookup, rescheduling or ticket creation, what information it needs
  3. A voice: pick one from the voice library, or use a cloned brand voice
  4. An opening line: say in the first sentence what the agent can help with
  5. Escalation rules: which questions it handles itself and which always go to a person

Billing and onboarding

Agents bill per conversation minute, separate from voiceover credits. Open a ticket with your scenario and the materials above; we build it and hand you an embed snippet or a phone number.

FAQ

How can I try the AI voice agent? A real demo agent lives in the Voice Agent tab of the homepage studio. Press the button, ask anything, and it listens, thinks and answers in voice. The latency and tone you hear is what your own site would get.

Can an AI voice agent answer phone calls? Yes. It connects through Twilio / SIP for phone reception and replaces keypad menus, or it can be embedded on your website as voice support.

Which languages does it speak? Replies are synthesized in 70+ languages, which suits multilingual support and language practice.

Will it make things up? It answers from the product docs, FAQs and policies you upload rather than from imagination, and complex cases can be escalated to a person.

Can it use our own voice? Yes. It can use any voice from the voice library, including a cloned brand voice.

How is it billed? Agents bill per conversation minute, separate from voiceover credits. For a custom build, open a ticket describing your scenario.

Get your own AI voice agent

Have a short conversation with the demo on the homepage first. If it fits, open a ticket with your knowledge base, APIs and scenario.

Build one for my business →