クイックスタート
このガイドでは、Synthflowのすべての機能について説明します。
- はじめる — Create your account and connect a number
- スマート通話管理の使い方 — Route inbound and outbound phone calls without missed leads
- 自動スケジューラーの使い方 — Book appointments live during calls through Google Calendar
- 自動応答サービスの使い方 — Answer every caller after hours with no staff
- AI音声エージェントの使い方 — Build agents that hold real conversations with customers
- レポートと分析の使い方 — Read every call transcript and spot weak answers
- WhatsApp連携の使い方 — Follow up on a second channel after each call
- AI受付の使い方 — Greet callers, escalate complex issues, and transfer warmly
- AIコンシェルジュの使い方 — Handle guest requests and service questions around the clock
- IVR最適化の使い方 — Replace menu trees so callers just say what they want
所要時間： 各作品につき5分
このガイドには以下の内容も含まれています。 プロのヒント | よくある間違い | トラブルシューティング | 価格 | 代替案
このガイドを信頼する理由
I have run Synthflow AI on live 仕事 lines for eight months and tested every feature here.
Every screenshot and step comes from my own account, not a vendor demo reel.
Disclaimer: this page contains affiliate links, and I acknowledge that clearly before you read further.
Synthflow AI is a 声 AI platform that builds ai voice agents to handle phone calls automatically.
Most people set up one agent and never touch the rest of the tool.
This guide shows you how to use Synthflow feature by feature.
Step by step, with screenshots and pro tips from real work.
Synthflowチュートリアル
This How to Use Synthflow tutorial walks through every feature, from your first agent to advanced flow work.
シンセフロー
Stop losing business to missed calls. Synthflow AI answers every phone call with voice agents that book appointments, qualify leads, and transfer complex cases to your team. Usage based billing starts at $0, so you can build and test an agent before you buy anything.
Synthflow入門
Before any feature works, finish this one time setup.
約3分かかります。
Watch my walkthrough of the platform first:
それでは、各ステップを詳しく見ていきましょう。
ステップ1：アカウントを作成する
Go to the Synthflow website and click the Get Started button.
会社のメールアドレスを入力し、パスワードを作成してください。
✓ チェックポイント: a confirmation email lands in your 受信トレイ within a minute.
ステップ2：電話番号を接続する
Synthflow AI runs in the browser, so there is no app to download.
Buy a number inside Synthflow, or integrate an existing number using Twilio.
ダッシュボードの画面は以下のようになります。
✓ チェックポイント: your number shows a green connected status.
Step 3: Feed the Agent Your Business Data
Upload PDFs or documents so the agent knows your services, hours, and prices.
No coding skills are needed at any point here.
✅ 完了: これで、以下のすべての機能をご利用いただけます。
How to Use Synthflow Smart Call Manager
スマート通話管理 lets you route every inbound and outbound call to the right ai agents automatically.
以下に、その使用方法をステップごとに説明します。
Step 1: Open the Numbers Tab
Click Phone Numbers, then assign your number to an agent.
One number can hold separate inbound and outbound agents.
Step 2: Set Your Routing Rules
Choose what happens on busy lines and after hours.
Add a transfer number so callers reach a human when needed.
これは以下のようなものです。
✓ チェックポイント: the call log shows your test with a full recording.
Step 3: Run a Test Call
Use the dashboard to place a live test call and listen back.
✅ 結果: no more missed calls, day or night.
💡 プロのヒント: Set a second transfer number for overflow. Sales teams lose deals when the first line rings out.
Synthflow自動スケジューラの使い方
自動 スケジューラ lets you let the agent book appointments during the call itself.
以下に、その使用方法をステップごとに説明します。
ステップ1：カレンダーを接続する
Open Integrations and connect Google Calendar or Cal.com.
Grant booking access when the consent screen appears.
Step 2: Define Your Availability
Pick your working hours, slot length, and buffer time.
Real time booking then happens mid conversation, not after it.
これは以下のようなものです。
✓ チェックポイント: a test booking appears on your calendar with the correct date.
Step 3: Add a Confirmation Action
Trigger an SMS or email confirmation the moment a slot is taken.
✅ 結果: your calendar fills while you sleep.
💡 プロのヒント: Block a 15 minute buffer between slots. Back to back bookings leave no room when a call runs long.
Synthflow自動応答サービスの使い方
自動応答サービス lets you answer every caller when your team is offline.
以下に、その使用方法をステップごとに説明します。
ステップ1：テンプレートを選択する
Start from a pre built template such as appointment scheduling.
Templates save an hour of prompt writing on day one.
Step 2: Write the Greeting
Keep the opening line short and name your business.
Tell the agent to acknowledge the reason for the call before answering.
これは以下のようなものです。
✓ チェックポイント: an after hours test call gets a full answer, not voicemail.
Step 3: Set an Escalation Path
Route anything the agent cannot answer to a human on request.
✅ 結果: 24/7 availability without night shift staff.
💡 プロのヒント: Add your top ten questions to the knowledge base. Callers ask the same things far more often than you expect.
Synthflow AI音声エージェントの使い方
AI音声エージェント lets you build ai voice agents that hold real conversations with your customers.
以下に、その使用方法をステップごとに説明します。
Step 1: Choose Your Build Mode
Pick Flow Designer for structured logic or Single Prompt for speed.
You can create multiple agents using both approaches.
Step 2: Add Conversation Nodes
Each node in Flow Designer is one action or decision point.
Place a Conversation node before any branch so the agent waits for the answer.
Deterministic logic means the agent follows set rules rather than making its own decisions.
これは以下のようなものです。
✓ チェックポイント: your agent greets you by name on a test call.
Step 3: Pick the Voice
選択してください イレブンラボ voice, then tune tone, speed, and volume.
✅ 結果: an ai voice that most callers cannot tell from a person.
💡 プロのヒント: Upload audio samples to clone your own voice. Regular customers respond better to a voice they already know.
Synthflowレポートと分析の使用方法
レポートと分析 lets you see what your voice agents actually said on every call.
以下に、その使用方法をステップごとに説明します。
Step 1: Open Call History
Filter by agent, outcome, or date range.
Use search to find one caller fast.
Step 2: Read the Transcript
Open any call and read the transcript beside the recording.
Weak answers show up as long pauses or repeated questions.
これは以下のようなものです。
✓ チェックポイント: your dashboard shows call volume, duration, and outcomes.
Step 3: Feed Fixes Back
Rewrite the prompt or add the missing fact to your knowledge base.
Share the transcript with your team so any fact you added gets checked.
✅ 結果: a clear view of where the agent loses people.
💡 プロのヒント: Review ten transcripts every Friday. Fifteen minutes of reading beats a month of guessing.
Synthflow WhatsApp連携の使い方
WhatsAppとの連携 lets you continue the conversation on a channel people actually read.
以下に、その使用方法をステップごとに説明します。
Step 1: Link WhatsApp
Connect your business number in the integrations panel.
Verify ownership through the code sent to that number.
Step 2: Build the Follow Up
Write one short message the agent sends after each call.
Include the booking link or the quote you mentioned on the phone.
これは以下のようなものです。
✓ チェックポイント: a test call ends with a WhatsApp message on your phone.
Step 3: Set the Trigger
Fire the message only on calls that end with a booking or a quote.
✅ 結果: fewer dropped leads between the call and the sale.
💡 プロのヒント: Keep messages under two lines. Long follow ups get ignored, short ones get replies.
Synthflow AI Receptionistの使い方
AI受付係 lets you greet callers, qualify them, and escalate the hard ones.
以下に、その使用方法をステップごとに説明します。
Step 1: Define the Intake Questions
Ask name, reason for calling, and preferred callback time.
Store each answer as a variable you reference later.
Step 2: Add Lead Qualification Logic
Branch high intent callers straight to your sales line.
Send everyone else to booking or a callback queue.
これは以下のようなものです。
✓ チェックポイント: a transferred call arrives with a summary attached.
Step 3: Turn On Warm Transfer
The agent passes call context to the human before handing over.
✅ 結果: your team only picks up calls worth their time.
💡 プロのヒント: Score leads on budget and timeline, not politeness. Friendly callers are not always buyers.
Synthflow AI Conciergeの使い方
AIコンシェルジュ lets you handle guest requests and service questions at any hour.
以下に、その使用方法をステップごとに説明します。
Step 1: Load Your Service Menu
Upload your list of services, hours, and prices.
Add anything guests ask about that is not on your site.
Step 2: Enable Request Handling
Let the agent take a request and log it for your team.
Cancel and reschedule flows belong here too.
これは以下のようなものです。
✓ チェックポイント: a test request appears as a new record in your CRM.
Step 3: Connect Your CRM
Push every request into HubSpot or セールスフォース natively.
✅ 結果: guest assistance that never sleeps.
💡 プロのヒント: Add an accessibility note to your greeting. Offering a slower pace helps callers who need it.
How to Use Synthflow IVR Optimizer
IVR最適化 lets you replace press one menus with plain speech.
以下に、その使用方法をステップごとに説明します。
Step 1: Map Your Current Menu
Write down every option callers hear today.
Most menus have three real paths and a lot of noise.
Step 2: Rebuild It as One Question
Ask callers what they need and let the agent understand the answer.
The Multi-Agent System keeps each path as its own small flow.
これは以下のようなものです。
✓ チェックポイント: every spoken request reaches the right agent.
Step 3: Test Every Path
Call in and try each path, including the one nobody uses.
✅ 結果: shorter calls and fewer hang ups.
💡 プロのヒント: Kill any menu option under two percent of traffic. Fewer choices means faster calls.
Synthflow Proのヒントとショートカット
After eight months on this platform, here are the shortcuts I actually use.
Every user gets the same ビルダー, so these work at any account level.
キーボードショートカット
| アクション | ショートカット |
|---|---|
| Save the current agent | Ctrl + S |
| Duplicate a selected node | Ctrl + D |
| Undo a flow change | Ctrl + Z |
| Fit the whole flow on screen | Shift + 1 |
ほとんどの人が見逃す隠れた機能
- マルチエージェントシステム： break one huge flow into small reusable sub flows that are easier to work on.
- カスタム 音声クローン: upload audio samples and the tool builds a voice that sounds like your own team.
- Warm transfer context: the human who picks up hears what happened before they say hello.
- BELL framework: build, evaluate, launch, and learn is the loop Synthflow recommends for every agent.
Here is what my own account looks like after eight months of use:
Synthflowでよくある間違いを避ける方法
Mistake #1: Branching before the agent has an answer
❌ 間違い: adding branch logic straight after the greeting node.
✅ 右: place a Conversation node first so the system waits for and stores the reply.
Mistake #2: Launching with an empty knowledge base
❌ 間違い: going live with only a prompt and hoping the agent guesses your prices.
✅ 右: upload your service documents before the first real call.
Mistake #3: Ignoring accents and complex questions
❌ 間違い: assuming the ai handles every caller without help.
✅ 右: build an escalate path 早い, because heavy accents and complex questions still need a person.
Synthflowのトラブルシューティング
Problem: The agent talks over the caller
原因： the interruption threshold is set too low for your line quality.
修理： raise the silence timeout by half a second and test again on a mobile connection.
Problem: Bookings are not reaching the calendar
原因： the calendar connection expired or the account lost booking permission.
修理： disconnect the integration, reconnect it, and place one test call to confirm.
Problem: Your bill jumped this month
原因： usage based billing scales with call minutes, so volume spikes hit the invoice fast.
修理： cap concurrent calls and check the minutes report weekly instead of monthly.
📌 注記： if none of these fix your issue, contact Synthflow support.
Synthflow とは何ですか?
Synsflow AI is a voice AI operating system that automates and scales thousands of calls from one platform.
Think of it like hiring a receptionist who never sleeps and never forgets a script.
It is designed for ease of use, which makes it a versatile tool across many types of businesses.
Watch my full review video:
It runs on models like GPT-4o and ElevenLabs, and it includes these key features:
- スマート通話管理： route inbound and outbound phone calls to the right agent.
- 自動スケジューラー: book appointments live through Google Calendar or Cal.com.
- 自動応答サービス： answer every caller after hours with no staff on shift.
- AI音声エージェント： build agents that hold real conversations with your customers.
- レポートと分析: read every call transcript and spot weak answers fast.
- WhatsAppとの連携： follow up on a second channel after the call ends.
- AI受付係： greet callers, run lead qualification, and transfer warmly.
- AIコンシェルジュ： handle guest requests and service questions around the clock.
- IVR最適化： replace menu trees so callers just say what they want.
不動産 teams use it for lead qualification, clinics use it for appointments, and restaurants use it for bookings.
Multi cloud redundancy and instant failover keep enterprise lines up when one region fails.
詳細なレビューについては、こちらをご覧ください。 Synthflowのレビュー.
Synthflowの価格
Here is what Synthflow costs in 2026:
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 使った分だけ支払う | 利用量に応じた課金、開始費用は無料 | 中小企業 testing their first agent |
| 企業 | 営業担当者に問い合わせる | Teams needing failover, 安全 review, and volume rates |
無料トライアル: yes, you can build and test an agent for $0 before you purchase minutes.
返金保証: no formal guarantee, but usage billing means you only pay for calls you place.
💰 最もお得な価格: Pay as you go — you buy minutes as you need them, with no seat fees.
One warning from my own invoices: costs climb quickly at high call volume.
Synthflowと代替案の比較
How does Synthflow compare? Here is the competitive landscape:
この比較をご覧ください。
| 道具 | 最適な用途 | 価格 | 評価 |
|---|---|---|---|
| シンセフロー | No code voice agents | 開始費用は0ドルです。 | ⭐ 4.2 |
| コールヒッポ | Business phone lines | 月額18ドル | ⭐ 4.3 |
| クリスプコール | Global numbers | 月額15ドル | ⭐ 4.4 |
| コールレール | 通話追跡 | 月額50ドル | ⭐ 4.5 |
| リテルAI | Natural conversations | 1分あたり0.07ドル | ⭐ 4.6 |
| ヴァピ | Developer control | 1分あたり0.05ドル | ⭐ 4.4 |
| 味気ない 人工知能 | High volume outbound | $0.09/min | ⭐ 4.2 |
| エアAI | Long sales calls | カスタム | ⭐ 3.9 |
| 良い判断だ | Small local teams | 月額59ドル | ⭐ 4.3 |
| イレブンラボ | Voice quality | 月額5ドル | ⭐ 4.7 |
おすすめ商品：
- 総合ベスト： Synthflow — the widest feature set with no coding required.
- ベスト予算： KrispCall — cheap numbers if you only need calling, not ai.
- 初心者におすすめ： Goodcall — the fastest setup for a single location.
- 開発者向けに最適： Vapi — full control if your team writes code.
🎯 Synthflowの代替品
Synthflowの代替ソフトをお探しですか？おすすめの選択肢はこちらです。
- 🚀 CallHippo: a full business phone system with power dialing, better suited to human sales teams than ai agents.
- 💰 クリスプコール： cheap global numbers and unified calling, a fit when you want lines rather than voice agents.
- 📊 コールレール: the strongest call tracking and attribution reporting if marketing spend is your real 質問.
- 🌟 再話AI： praised for natural conversations and predictable behaviour when callers interrupt mid sentence.
- 🔧 ヴァピ: more flexibility for developers, though it needs real technical setup before your first live call.
- ⚡ 味気ないAI： built for very high outbound volume, with tight control over latency and call pacing.
- 💼 エアAI： aimed at long sales conversations, best for teams that live on the phone all day.
- 👶 グッドコール： the easiest starting point for a small local business that just needs calls answered.
- 🎨 イレブンラボ: the best raw voice quality in the world right now, though it is a voice engine, not a full platform.
全リストについては、こちらをご覧ください。 Synthflowの代替案 ガイド。
⚔️ Synthflow との比較
Here is how Synthflow stacks up against each competitor:
- Synthflow vs CallHippo: Synthflow answers calls on its own, CallHippo just routes them to people.
- Synthflow vs KrispCall: KrispCall wins on number pricing, Synthflow wins on オートメーション.
- Synthflow vs CallRail: CallRail measures calls, Synthflow handles them.
- Synthflow vs Retell AI: Retell handles interruptions better, Synthflow gives you more prebuilt features.
- Synthflow vs Vapi: Vapi offers deeper control, Synthflow gets you live without a developer.
- Synthflow vs Bland AI: Bland leads on outbound scale, Synthflow leads on inbound reception work.
- Synthflow vs Air AI: Air targets long sales calls, Synthflow covers a wider range of use cases.
- Synthflow vs Goodcall: Goodcall is simpler, Synthflow scales to multi location teams.
- Synthflow vs ElevenLabs: ElevenLabs supplies the voice, Synthflow supplies the whole agent around it.
今すぐSynthflowを使い始めましょう
Synthflowの主要な機能をすべて使いこなせるようになりました。
- ✅ スマート通話管理
- ✅ 自動スケジューラー
- ✅ 自動応答サービス
- ✅ AI音声エージェント
- ✅ レポートと分析
- ✅ WhatsApp連携
- ✅ AI受付係
- ✅ AIコンシェルジュ
- ✅ IVR最適化
次のステップ： pick one feature and try it today.
Most people start with Smart Call Management.
5分もかかりません。
I hope this guide saved you a few hours of trial and error.
If something here did not work for you, leave a comment and I will take a look. Thanks for reading.
よくある質問
Synthflowは何をするものですか？
Synthflow builds ai voice agents that answer phone calls, book appointments, run lead qualification, and transfer complex calls to your team, all without any coding.
Synthflow AIとは何ですか？
Synthflow AI is a voice AI platform that creates, manages, and scales voice agents from one dashboard, using models like GPT-4o and ElevenLabs voices.
Synthflowはどの言語をサポートしていますか？
Synthflow supports more than 30 languages through its ElevenLabs voice layer, covering English, Spanish, German, French, Portuguese, Hindi, Arabic, and most major European languages.
How much does Synthflow cost?
Synthflow uses usage based billing that starts at $0, so you only pay for call minutes. Enterprise teams contact sales for volume rates and failover.
Synthflowをキャンセルするにはどうすればよいですか？
Open account settings, select billing, and cancel your plan there. Usage billing stops at the end of the current cycle, and your call transcripts stay downloadable.
English 
Spanish 
Chinese 
German 
French 
Arabic 
Russian 
Portuguese 
Japanese 
Korean 
Italian 
Turkish 
Dutch 
Polish 
Indonesian 
Thai 
Vietnamese 