How much does it cost to build an AI chatbot or AI agent?
A simple scripted chatbot can cost a few thousand; an LLM-powered support bot that answers from your own documents typically runs in the low-to-mid tens of thousands; and a custom AI agent that takes actions across integrated systems can reach six figures. The price is driven by the type of bot, integration depth, data quality, and compliance. Ranges are indicative — scope it and get a quote.
Figures are broad market indications to help you budget, not quotes. Actual pricing varies by scope, volume and agency.
Typical ranges by bot type
Simple scripted / FAQ bot
Low thousands. Rule-based or menu-driven, answering a fixed set of questions. Fast to build, limited flexibility.
LLM-powered support bot (RAG)
Low-to-mid tens of thousands. Answers from your own documents and knowledge base, handles natural language, needs data preparation and guardrails.
Custom AI agent
Tens of thousands into six figures. Takes actions across integrated systems, with the reliability, guardrails, testing and monitoring that safe automation requires.
What drives the cost
Bot type and capability
Scripted vs generative vs agentic is the biggest lever. Each step up adds capability and cost.
Integrations
Connecting to your CRM, support desk, database or booking system adds scope and testing per integration.
Data preparation
A bot answering from your content is only as good as that content. Cleaning and structuring it is often a real line item.
Guardrails and compliance
Preventing wrong or unsafe answers, and meeting GDPR / EU AI Act obligations, adds design and testing work.
Ongoing usage
Model/API calls scale with traffic; a busy bot has a running cost that a quiet one doesn't.
Budgeting the right way
Decide the capability you actually need before pricing it — most buyers over-spec. The pricing model then determines how you pay, and the same cost drivers apply across AI projects generally and custom LLM/RAG builds.
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Frequently asked questions
How much does it cost to build an AI chatbot?
It depends on sophistication. A simple scripted or FAQ chatbot can cost a few thousand. An LLM-powered support bot that answers from your own documents (retrieval-augmented) typically runs in the low-to-mid tens of thousands. A custom AI agent that takes actions across integrated systems can reach six figures. The main drivers are the type of bot, how much it integrates with your systems, data quality, and compliance requirements. Treat these as indicative and get a scoped quote.
What's the difference in cost between a chatbot and an AI agent?
A chatbot answers questions; an AI agent takes actions — booking, updating records, triggering workflows across systems. Agents cost more because they need reliable integrations, guardrails, testing and monitoring to act safely. Expect an agent to sit meaningfully above a comparable chatbot in both build and ongoing cost.
Are there ongoing costs for an AI chatbot?
Yes. Beyond the build, budget for model/API usage (which scales with volume), hosting, monitoring and evaluation, and periodic updates as your content and needs change. A bot is a system to maintain, not a one-off deliverable, so factor the running cost into your total.
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