CRM with integrated AI
Our own platform with conversational AI that qualifies, replies to and prioritizes leads without you touching anything.

AI Consulting
I design AI integration into your company with you to multiply productivity, cut costs and open new revenue lines. I don't sell tools — I build the full system where AI runs marketing, sales, customer service, internal processes and reporting, and frees your team to focus on what actually moves the business.
USACompanies with AI implemented
Best growth achieved
Verified reviews
Operational tasks automatable
The Problem
Most companies use ChatGPT, subscribe to scattered tools and let every team experiment on their own. There's activity, there are tests, there's spending — but no system. AI ends up as a toy nobody can measure.
Tools, subscriptions and AI hours
Grows every month
Real productivity and ROI
Stays flat
The difference between companies scaling with AI and those falling behind isn't the model they use: it's how they integrate it into their processes. I design that integration with a business mindset, not a hype mindset — so every euro invested in AI returns measurable results.
Is your AI adding value or complexity?
Approach
I analyze with AI every key area of the business: marketing, sales, customer service, internal processes and reporting. We don't implement AI everywhere — only where it truly frees hours, cuts costs and opens new revenue. And where it makes sense, we build custom AI applications for your company.
Estimation by company size
10–50 people. Some automations, no central AI system.
Areas where AI frees up time
Total saved per month with AI
Time you recover every month across the company after integrating AI
0hours
Ready to integrate AI into your company?
Differentiation
What I'm NOT
Sells tools. Implements fast. Multiplies clients.
What I AM
Designs, applies and implements only where AI returns ROI.
We only implement AI where it actually returns ROI — and we only take 5 new companies per month to guarantee real technical dedication, depth and measurable results. If your company is the next one, let's talk.
Real cases
Every project means a measurable transformation: lower operating cost, more speed, better decisions.

From a neighborhood shop in Barcelona with no digital presence to a 100% digital company with a scalable model and recurring sales across Spain.
Law firm“We increasingly have more clients than we can handle”
Leticia and Mónica went from depending on referrals to a stable acquisition system. +800% organic traffic in twelve months.
View case
Accounting firm · Mexico City“From zero to 756 leads and the first page of Google”
Juan Pablo and Adrián went from 0 to 756 leads, from page 2 to first position on Google, and from referrals to a self-running acquisition system.
View case
Aesthetic medicine clinic · Barcelona“I like their professionalism and the results are very good”
Paula and Claudio had a top-tier clinic with zero digital visibility. We built the full strategy: medical content, campaigns and active acquisition.
View caseCould your company be the next AI case study?
Bonus · Implementation
On top of the consultancy, together with my team I give you the option to roll out an AI system that controls your entire company and that you can manage from a phone. Every founder makes real decisions without opening an Excel or waiting for meetings.
TFB Assistant
Online · AI
Our own platform with conversational AI that qualifies, replies to and prioritizes leads without you touching anything.
Assistants that automate reporting, customer service, proposal generation and follow-ups — running 24/7.
A mobile app where you see sales, leads, per-person KPIs and profitability in real time. You ask, and the AI replies with real data.
24/7
Your company running with AI non-stop
Want us to implement it too?
Recognition
The Funnel Box was recognized within the OpenAI Partner Network as a Select Partner — the tier that distinguishes firms with demonstrated ability to deliver AI solutions in real enterprise environments.
Read the announcement
The Funnel Box's application to Forbes Business Council was pre-approved on merit and business track record — Forbes' curated community for business leaders.

AI Consultant
Founder of The Funnel Box, Brainstorming Films, Veribox and Echoroutes
Let me tell you who I am and why to choose me
The difference between companies that grow with AI and those that only try it is not the model they use, but how they integrate it into the business.
I've spent more than 10 years transforming companies, and in recent years I have led AI integration across marketing, sales, customer service, internal processes and reporting for clients in retail, e-commerce, professional firms, aesthetic medicine, B2B and education.
What I learned is clear: AI doesn't fail — implementations without strategy do.
That's why I don't sell tools. I design the full AI architecture of the business and roll it out with my team until it runs on its own.
I work differently.
Not like an agency that plugs in ChatGPT.
Not like a vendor that leaves you with a PDF.
But as a partner who steps into the business, understands how it really works and applies AI where it has measurable impact.
If we work together
It's not about using more AI.
It's about using the AI that actually moves the business.
Google reviews
Pedro Miralles
Enhorabuena a Gonzalo y su equipo por el excelente trabajo que están realizando con mi empresa. Su colaboración ha supuesto un trampolín en el desarrollo del marketing digital del despacho, sin duda, la mejor decisión que he tomado. Gonzalo lo hace a la primera, es un gran equipo humano, siempre pendiente de lo que necesitas. 100% recomendable.
Jelena Marjanovic
Conocí a Gonzalo cuando buscaba un especialista en marketing digital que me ayudara a expandir mi negocio de Formación y Desarrollo. Gonzalo realizó un estudio completo de mi negocio y creó una estrategia a corto y largo plazo que me permitió captar nuevos clientes y aumentar mis ganancias. Le apasiona su trabajo y también mi negocio y mis objetivos. Logró comprender mis ideas y simplificarlas para hacerlas prácticas. Una ventaja adicional fue su experiencia en el ámbito del e-learning, ya que ha creado varios cursos online excelentes para el autoaprendizaje sobre marketing digital. Me sentí muy cómodo trabajando con él porque sentí que su principal motivación es ayudar a las personas a alcanzar sus sueños.
Julián Chappa
"The Funnel Box" not only managed to provide me with that fundamental added value, but Gonzalo Castro's professionalism, experience, and empathy allowed me to capitalize on my dream. Gonzalo designed a personalized campaign, which allowed me to get my ideal target audience. I highly recommend this service.
José Manuel M. S.
Grandes profesionales del marketing digital; hemos apreciado dominio de las redes sociales que gestionan y, sobre todo, implicación y celeridad de todo el equipo. Hemos conseguido los resultados solicitados. Repetiremos.
Hugo Amasuno
Gran equipo de marketing digital. Trabajamos con ellos desde hace unos años y agradecemos su dedicación y profesionalidad. Es con la primera agencia que estamos obteniendo resultados sostenidos en el tiempo. Gonzalo y todo su equipo son un gran partner de confianza para nosotros.
Claudia Bondaret
I had a fantastic experience working with Gonzalo and his team. From the very beginning, they truly understood my vision and brought it to life with precision and creativity. Beyond delivering excellent results, they also provided valuable guidance on strategies to attract more leads and grow my business. Their professionalism, dedication, and insight made a real difference. I'm extremely happy with the outcome and highly recommend their services.
Mara Zelwianski
Excelente atención, herramientas y conocimiento. Todo lo que uno puede buscar en un partner!
Taxcom Advisors
Es una agencia muy profesional y dan seguimiento constante a la cuenta, estamos muy contentos de trabajar con ellos.
Be our next client with AI integrated
FAQ
A complete diagnosis of your company focused on AI opportunities, a 6–12 month integration architecture and hands-on support during execution alongside your team. It's not just a report — I get into operations.

Direct consultation
30 minutes. No commitment. We'll tell you exactly where AI can have measurable impact in your company and where to start.
We respond in less than 48 hours.

Gonzalo Castro
CEO & Fundador · The Funnel Box

Lucía
de TFB