Enseña tu negocio a tu IA con la base de conocimiento

Conocimiento dentro. Mejores respuestas fuera.
La base de conocimiento convierte tu contenido existente en contexto en directo para cada llamada. Importa páginas web, sube documentos o añade texto personalizado, y deja que tu agente con IA extraiga la información adecuada en tiempo real para responder preguntas, reducir las alucinaciones y mantener las conversaciones en marcha, a escala.
Descripción general

Ve más allá de la IA basada solo en prompts

Los prompts son difíciles de mantener y se quedan pequeños enseguida. La base de conocimiento da a tu agente acceso a la información en la que tu equipo ya confía, para que responda con mayor precisión, se mantenga alineado con tu negocio y resuelva más preguntas de clientes sin intervención humana.

Sube páginas web
Puntos clave
Compatible con páginas individuales o sitios web completos
Recuperación en tiempo real en menos de 100 ms
Ágil y eficiente
Up to 500 URLs per knowledge base
Sube documentos
Puntos Clave
Sube fácilmente PDFs, DOCX y TXT
Añade orientación específica de tu negocio o conocimiento seleccionado
Compatible con una amplia variedad de formatos
Text and connected apps
Key Points
Up to 50 text snippets per knowledge base
Sync Google Drive, OneDrive and Notion
Changed sources re-sync on the daily auto-refresh
Función

Dale a tu agente el contenido que necesita para responder con confianza

Da a tu agente acceso fácil a la información que los clientes preguntan, sin tener que codificar cada detalle en los prompts. Y puedes reutilizarla en varios agentes.

Retell dashboard Knowledge Base tab showing a knowledge base of five uploaded documentation files, with the workspace's other knowledge bases listed beside it.
Creado para contact centers, no para demos

Retell es la plataforma de voz con IA sobre la que operan los contact centers empresariales

Retell te permite crear, probar y desplegar agentes telefónicos de IA que gestionan volumen real de llamadas, para que tu equipo dedique su tiempo a las conversaciones que necesitan a una persona.
Conformidad con SOC 2 Type II y HIPAA. Con la confianza de equipos que gestionan 1.000+ llamadas al día.
Cómo funciona

Cómo usar una base de conocimiento, paso a paso

Retell dashboard Knowledge Base tab with a knowledge base of website and file sources.
Créala
Ve a la pestaña Base de conocimiento y haz clic en Añadir. Luego elige cómo quieres agregar contenido:
URL: Importa desde una página web o un sitio completo
Archivo: Sube documentos (PDF, TXT, DOCX)
Texto: Añade contenido directamente
 
Retell agent editor with the Knowledge Base settings section.
Añádela
Ve a la sección Base de conocimiento en el editor del agente y selecciona tu contenido. Tu agente la usará para dar respuestas precisas y relevantes.
 
Retell agent editor with a knowledge base attached to the agent.
Pruébala
Prueba a hacer una pregunta relacionada en el área de pruebas. Tu agente consultará la base de conocimiento por sí solo, sin necesidad de ninguna configuración adicional.
 
Características principales

Diseñada para el mundo real

Answers stay current.
Auto-refresh re-fetches your URLs and re-syncs changed Google Drive, OneDrive and Notion sources every 24 hours. If a source can't be refreshed, its existing content is kept.
One source for voice and chat.
Chat agents use the same knowledge bases as voice agents, so callers and website visitors get answers from the same content.
See what the agent retrieved.
Every agent turn that used the knowledge base shows a Knowledge Base Retrieval link in Call History, with the exact chunks passed to the LLM.
Tune retrieval, not just prompts.
Set chunks to retrieve and a similarity threshold, add a Knowledge Base Instruction to focus the search, or attach a knowledge base to a single node in a conversation flow.
Casos de uso

Impacto demostrado en
múltiples sectores

Inbounds
Inbounds.com ha escalado y optimizado sus campañas de llamadas sin sacrificar la supervisión humana esencial para el éxito de sus clientes.
“Nuestra adopción temprana de Retell AI, combinada con nuestra capacidad de personalizarlo a fondo y construir nuestra propia infraestructura en torno a él, nos da de verdad una ventaja en el sector.”
Leonardo Danconia
CEO and Cofounder, inbounds.com
Swtch Energy
El coste de nuestro equipo de atención al cliente estaba aumentando entre un 300 y un 400 por ciento al año. Al introducir Retell y crear a Lucas, pudimos reducir esa carga en más de un 50 por ciento, mejorar drásticamente nuestros márgenes de SaaS y seguir dando soporte a nuestros clientes durante situaciones de alto crecimiento y urgencia.
Carter Li
CEO
Matic Insurance
A medida que hemos explorado formas de impulsar una mayor eficiencia en nuestro negocio durante los últimos 18 a 24 meses, aprovechar las tecnologías de IA se ha convertido en una parte clave de esa estrategia. Al hacerlo, podemos reducir el coste de captar nuevos clientes y, al mismo tiempo, mantener, o incluso reducir, el coste de retenerlos y darles servicio durante todo su ciclo de vida con nosotros.
Brian Barker
Product Manager
Integraciones

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stack tecnológico

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  • Hubspot
  • Twilio
  • Vonage
  • Go High Level
  • n8n
  • Zapier
  • Salesforce
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
  • Zapier
  • Salesforce
  • Avaya
  • Genesys
  • Five9
  • Amazon Connect
  • Telnyx
  • Make
  • Cal.com
  • Avaya
  • Genesys
  • Five9
  • Amazon Connect
  • Telnyx
  • Make
  • Cal.com
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Descubre más
funcionalidades

Explora cómo Retell AI puede transformar cada parte de tus operaciones de llamadas. Descubre toda la gama de capacidades diseñadas para una automatización más inteligente, mayor eficiencia y una experiencia del cliente mejorada.

Comparativa con la competencia

What an AI knowledge base does on a live call

An AI knowledge base is a collection of your own content, such as webpages, documents and text, that an AI agent searches during a conversation and uses as context for its reply. On a phone call that search has to fit between the caller finishing a sentence and the agent starting to speak, so Retell runs it before every response the agent gives.

Diagram of how a Retell AI knowledge base feeds a voice agent. Before the call, webpages (up to 500 URLs), files (50 MB each), text snippets (up to 50) and synced Google Drive, OneDrive and Notion content are split into chunks, embedded and stored in a vector database, linked to agents and auto-refreshed every 24 hours when enabled. During the call, before every reply: 1 the caller speaks, 2 the recent conversation is condensed into a search query, 3 the closest chunks are retrieved (3 by default, similarity threshold 0.6), 4 they are added to the LLM prompt under Related Knowledge Base Contexts, 5 the agent answers. Retrieval generally adds under 100 ms.
How a Retell AI knowledge base is built before the call and searched before every agent reply. Diagram by Retell AI, October 2026. Source: Retell knowledge base docs.

You don't need to change your prompt. Once a knowledge base is linked to an agent, it is searched automatically, and the retrieved text is added to the LLM prompt before the agent replies. Keep facts in the knowledge base and keep instructions in the agent's prompt.

What you can add to a Retell knowledge base

Source What it holds How it stays current Limit per knowledge base
URLs Single pages, or every page under a URL path with auto-crawl Auto-refresh and auto-crawl every 24 hours, when enabled 500 URLs
Files PDF, DOCX, Markdown, TXT, HTML, CSV, XLSX, PPTX and more Re-upload when the file changes 25 files, 50 MB each; spreadsheets up to 1,000 rows and 50 columns
Text Snippets you paste or type in the dashboard Edit in the dashboard 50 snippets
Google Drive, OneDrive, Notion Docs, Sheets, files and pages from a connected account Changed sources re-sync on the 24 hour auto-refresh, when enabled See the sync guides

Need more room? Create another knowledge base. An agent can use more than one, and chat agents use the same knowledge bases as voice agents.

Retrieval is only as good as the source. Retell's docs recommend Markdown with clear headings, short sections and specific names, dates and units, because each chunk is read on its own. Our guide on how to structure a voice AI knowledge base goes further, and what grounding in AI means covers why answers from your own content are more reliable than answers from training data alone.

AI knowledge base FAQ

What is an AI knowledge base?

An AI knowledge base is a collection of your own content, such as webpages, documents and text, that an AI agent searches during a conversation and uses as context for its answer. In Retell, sources are split into chunks and stored in a vector database, and the agent retrieves the most relevant chunks before each reply.

Do I need to change my agent's prompt to use a knowledge base?

No. Once a knowledge base is linked to an agent, Retell searches it automatically before every response. You don't need to mention it in the prompt.

How do I stop the agent from answering outside the knowledge base?

Add an instruction to the agent's prompt telling it to answer only from the retrieved knowledge base context, which appears under the heading Related Knowledge Base Contexts, and to say so when no related information is found. Retell's knowledge base docs include a sample instruction you can copy.

Does the knowledge base add latency to calls?

Retell has optimized knowledge base retrieval for real-time calls, and it should generally add under 100 ms of latency.

How much does the Retell knowledge base cost?

Your first 10 knowledge bases are free, and each additional one is $8 per month. Calls with a knowledge base enabled cost an extra $0.005 per minute, whether the agent uses one knowledge base or several. Voice agents start from $0.07 per minute.

How does the knowledge base stay up to date?

Turn on auto-refresh and Retell re-fetches your URLs and re-syncs changed Google Drive, OneDrive and Notion sources every 24 hours. If a source can't be refreshed, its existing content is kept. Uploaded files don't sync, so re-upload a file after it changes.

Can chat agents use the same knowledge base as voice agents?

Yes. Chat agents use the same knowledge bases as voice agents, so a caller and someone chatting on your website or over SMS get answers from the same content.

How can I see which content the agent used on a call?

Open the call in Call History. Every agent turn that used the knowledge base shows a Knowledge Base Retrieval link that lists the exact chunks passed to the LLM for that response.

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