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Esta guía abarca todas las funciones de Synthflow:
- Empezando — Create your account and connect a number
- Cómo utilizar la gestión inteligente de llamadas — Route inbound and outbound phone calls without missed leads
- Cómo usar el programador automático — Book appointments live during calls through Google Calendar
- Cómo utilizar un servicio de contestador automático — Answer every caller after hours with no staff
- Cómo utilizar los agentes de voz con IA — Build agents that hold real conversations with customers
- Cómo utilizar informes y análisis — Read every call transcript and spot weak answers
- Cómo usar la integración de WhatsApp — Follow up on a second channel after each call
- Cómo usar la recepcionista con IA — Greet callers, escalate complex issues, and transfer warmly
- Cómo usar el servicio de conserjería con IA — Handle guest requests and service questions around the clock
- Cómo utilizar la optimización de IVR — Replace menu trees so callers just say what they want
Tiempo necesario: 5 minutos por función
También en esta guía: Consejos profesionales | Errores comunes | Solución de problemas | Precios | Alternativas
¿Por qué confiar en esta guía?
I have run Synthflow AI on live negocio 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 voz 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.
Tutorial de Synthflow
This How to Use Synthflow tutorial walks through every feature, from your first agent to advanced flow work.

Flujo de sintetizador
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.
Primeros pasos con Synthflow
Before any feature works, finish this one time setup.
Tarda unos tres minutos.
Watch my walkthrough of the platform first:
Ahora vamos a desglosar cada paso.
Paso 1: Crea tu cuenta
Go to the Synthflow website and click the Get Started button.
Introduce tu correo electrónico de trabajo y crea una contraseña.
✓ Control: a confirmation email lands in your bandeja de entrada within a minute.
Paso 2: Asociar un número de teléfono
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.
Así es como se ve el panel de control:

✓ Control: 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.
✅ Hecho: Ya puedes utilizar cualquiera de las funciones que aparecen a continuación.
How to Use Synthflow Smart Call Manager
Gestión inteligente de llamadas lets you route every inbound and outbound call to the right ai agents automatically.
Aquí te explicamos cómo usarlo paso a paso.
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.
Así es como se ve:

✓ Control: 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.
✅ Resultado: no more missed calls, day or night.
💡 Consejo profesional: Set a second transfer number for overflow. Sales teams lose deals when the first line rings out.
Cómo usar el programador automático de Synthflow
Automático Programador lets you let the agent book appointments during the call itself.
Aquí te explicamos cómo usarlo paso a paso.
Paso 1: Conecta tu calendario
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.
Así es como se ve:

✓ Control: 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.
✅ Resultado: your calendar fills while you sleep.
💡 Consejo profesional: Block a 15 minute buffer between slots. Back to back bookings leave no room when a call runs long.
Cómo utilizar el servicio de contestador automático Synthflow
Servicio de contestador automático lets you answer every caller when your team is offline.
Aquí te explicamos cómo usarlo paso a paso.
Paso 1: Elige una plantilla
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.
Así es como se ve:

✓ Control: 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.
✅ Resultado: 24/7 availability without night shift staff.
💡 Consejo profesional: Add your top ten questions to the knowledge base. Callers ask the same things far more often than you expect.
Cómo usar los agentes de voz de IA de Synthflow
Agentes de voz de IA lets you build ai voice agents that hold real conversations with your customers.
Aquí te explicamos cómo usarlo paso a paso.
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.
Así es como se ve:

✓ Control: your agent greets you by name on a test call.
Step 3: Pick the Voice
Elige un OnceLabs voice, then tune tone, speed, and volume.
✅ Resultado: an ai voice that most callers cannot tell from a person.
💡 Consejo profesional: Upload audio samples to clone your own voice. Regular customers respond better to a voice they already know.
Cómo usar los informes y análisis de Synthflow
Informes y análisis lets you see what your voice agents actually said on every call.
Aquí te explicamos cómo usarlo paso a paso.
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.
Así es como se ve:

✓ Control: 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.
✅ Resultado: a clear view of where the agent loses people.
💡 Consejo profesional: Review ten transcripts every Friday. Fifteen minutes of reading beats a month of guessing.
Cómo usar la integración de Synthflow con WhatsApp
Integración con WhatsApp lets you continue the conversation on a channel people actually read.
Aquí te explicamos cómo usarlo paso a paso.
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.
Así es como se ve:

✓ Control: 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.
✅ Resultado: fewer dropped leads between the call and the sale.
💡 Consejo profesional: Keep messages under two lines. Long follow ups get ignored, short ones get replies.
Cómo usar la recepcionista de IA de Synthflow
Recepcionista con IA lets you greet callers, qualify them, and escalate the hard ones.
Aquí te explicamos cómo usarlo paso a paso.
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.
Así es como se ve:

✓ Control: 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.
✅ Resultado: your team only picks up calls worth their time.
💡 Consejo profesional: Score leads on budget and timeline, not politeness. Friendly callers are not always buyers.
Cómo usar Synthflow AI Concierge
Conserje de IA lets you handle guest requests and service questions at any hour.
Aquí te explicamos cómo usarlo paso a paso.
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.
Así es como se ve:

✓ Control: a test request appears as a new record in your CRM.
Step 3: Connect Your CRM
Push every request into HubSpot or Fuerza de ventas natively.
✅ Resultado: guest assistance that never sleeps.
💡 Consejo profesional: Add an accessibility note to your greeting. Offering a slower pace helps callers who need it.
How to Use Synthflow IVR Optimizer
Optimización de IVR lets you replace press one menus with plain speech.
Aquí te explicamos cómo usarlo paso a paso.
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.
Así es como se ve:

✓ Control: every spoken request reaches the right agent.
Step 3: Test Every Path
Call in and try each path, including the one nobody uses.
✅ Resultado: shorter calls and fewer hang ups.
💡 Consejo profesional: Kill any menu option under two percent of traffic. Fewer choices means faster calls.
Consejos y atajos profesionales de Synthflow
After eight months on this platform, here are the shortcuts I actually use.
Every user gets the same constructor, so these work at any account level.
Atajos de teclado
| Acción | Atajo |
|---|---|
| Save the current agent | Ctrl + S |
| Duplicate a selected node | Ctrl + D |
| Undo a flow change | Ctrl + Z |
| Fit the whole flow on screen | Mayús + 1 |
Características ocultas que la mayoría de la gente pasa por alto
- Sistema multiagente: break one huge flow into small reusable sub flows that are easier to work on.
- Costumbre clon de voz: 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:

Errores comunes que debes evitar en Synthflow
Mistake #1: Branching before the agent has an answer
❌ Incorrecto: adding branch logic straight after the greeting node.
✅ Derecha: place a Conversation node first so the system waits for and stores the reply.
Mistake #2: Launching with an empty knowledge base
❌ Incorrecto: going live with only a prompt and hoping the agent guesses your prices.
✅ Derecha: upload your service documents before the first real call.
Mistake #3: Ignoring accents and complex questions
❌ Incorrecto: assuming the ai handles every caller without help.
✅ Derecha: build an escalate path temprano, because heavy accents and complex questions still need a person.
Solución de problemas de Synthflow
Problem: The agent talks over the caller
Causa: the interruption threshold is set too low for your line quality.
Arreglar: raise the silence timeout by half a second and test again on a mobile connection.
Problem: Bookings are not reaching the calendar
Causa: the calendar connection expired or the account lost booking permission.
Arreglar: disconnect the integration, reconnect it, and place one test call to confirm.
Problem: Your bill jumped this month
Causa: usage based billing scales with call minutes, so volume spikes hit the invoice fast.
Arreglar: cap concurrent calls and check the minutes report weekly instead of monthly.
📌 Nota: if none of these fix your issue, contact Synthflow support.
¿Qué es Synthflow?
Synthflow 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:
- Gestión inteligente de llamadas: route inbound and outbound phone calls to the right agent.
- Planificador automático: book appointments live through Google Calendar or Cal.com.
- Servicio de contestador automático: answer every caller after hours with no staff on shift.
- Agentes de voz con IA: build agents that hold real conversations with your customers.
- Informes y análisis: read every call transcript and spot weak answers fast.
- Integración con WhatsApp: follow up on a second channel after the call ends.
- Recepcionista con IA: greet callers, run lead qualification, and transfer warmly.
- Conserje de IA: handle guest requests and service questions around the clock.
- Optimización del IVR: replace menu trees so callers just say what they want.
Bienes raíces 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.
Para una revisión completa, consulte nuestra Reseña de Synthflow.

Precios de Synthflow
Here is what Synthflow costs in 2026:
| Plan | Precio | Mejor para |
|---|---|---|
| Pagar según se usa | Facturación basada en el uso, $0 para empezar. | Pequeñas empresas testing their first agent |
| Empresa | Contactar con ventas | Teams needing failover, seguridad review, and volume rates |
Prueba gratuita: yes, you can build and test an agent for $0 before you purchase minutes.
Garantía de devolución de dinero: no formal guarantee, but usage billing means you only pay for calls you place.

💰 Mejor relación calidad-precio: 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 frente a alternativas
How does Synthflow compare? Here is the competitive landscape:
Mira esta comparación:
| Herramienta | Mejor para | Precio | Clasificación |
|---|---|---|---|
| Flujo de sintetizador | No code voice agents | $0 para empezar | ⭐ 4.2 |
| Llama a Hipopótamo | Business phone lines | $18/mes | ⭐ 4.3 |
| KrispCall | Global numbers | $15/mes | ⭐ 4.4 |
| CallRail | Seguimiento de llamadas | $50/mes | ⭐ 4.5 |
| IA para volver a contar | Natural conversations | $0,07/min | ⭐ 4.6 |
| Vapi | Developer control | $0,05/min | ⭐ 4.4 |
| Amable AI | High volume outbound | $0.09/min | ⭐ 4.2 |
| IA aérea | Long sales calls | Costumbre | ⭐ 3.9 |
| Buena llamada | Small local teams | $59/mes | ⭐ 4.3 |
| OnceLabs | Voice quality | $5/mes | ⭐ 4.7 |
Selecciones rápidas:
- Mejor en general: Synthflow — the widest feature set with no coding required.
- Mejor presupuesto: KrispCall — cheap numbers if you only need calling, not ai.
- Ideal para principiantes: Goodcall — the fastest setup for a single location.
- Ideal para desarrolladores: Vapi — full control if your team writes code.
🎯 Alternativas a Synthflow
¿Buscas alternativas a Synthflow? Aquí tienes las mejores opciones:
- 🚀 Llama a Hippo: a full business phone system with power dialing, better suited to human sales teams than ai agents.
- 💰 KrispCall: cheap global numbers and unified calling, a fit when you want lines rather than voice agents.
- 📊 LlamadaRail: the strongest call tracking and attribution reporting if marketing spend is your real pregunta.
- 🌟 Recontar IA: praised for natural conversations and predictable behaviour when callers interrupt mid sentence.
- 🔧 Vapi: more flexibility for developers, though it needs real technical setup before your first live call.
- ⚡ IA blanda: built for very high outbound volume, with tight control over latency and call pacing.
- 💼 IA aérea: aimed at long sales conversations, best for teams that live on the phone all day.
- 👶 Buena llamada: the easiest starting point for a small local business that just needs calls answered.
- 🎨 OnceLabs: the best raw voice quality in the world right now, though it is a voice engine, not a full platform.
Para ver la lista completa, consulte nuestra Alternativas a Synthflow guía.
⚔️ Comparación de Synthflow
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 automatización.
- 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 IA insípida: 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.
Empiece a usar Synthflow ahora.
Aprendiste a usar todas las funciones principales de Synthflow:
- ✅ Gestión inteligente de llamadas
- ✅ Programador automático
- ✅ Servicio de contestador automático
- ✅ Agentes de voz con IA
- ✅ Informes y análisis
- ✅ Integración con WhatsApp
- ✅ Recepcionista con IA
- ✅ Conserje con IA
- ✅ Optimización de IVR
Siguiente paso: pick one feature and try it today.
Most people start with Smart Call Management.
Tarda menos de cinco minutos.
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.
Preguntas frecuentes
¿Qué hace Synthflow?
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.
¿Qué es Synthflow AI?
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.
¿Qué idiomas admite Synthflow?
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.
¿Cómo puedo cancelar Synthflow?
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.













