AI chatbots have become a default feature for websites and products, but the word chatbot hides a huge range of complexity. A scripted widget that answers ten questions and a retrieval assistant that reads your entire knowledge base are both chatbots, and they are not remotely the same to build. Understanding what drives the price is the fastest way to avoid overpaying or underbuilding.
What actually drives the cost
Four things move the price more than anything else: how intelligent the bot is, whether it connects to your own knowledge with retrieval (often called RAG), how many systems it must integrate with, and the guardrails that keep it safe and cheap to run.
Realistic ranges by type
A scripted or FAQ chatbot, with fixed flows and quick-reply buttons, is the most affordable option and suits simple support deflection. A single-purpose LLM assistant, which answers naturally but stays on one topic, sits in the middle. A retrieval assistant trained on your own content, with citations and human handoff, is more involved because it needs data pipelines and tuning. A fully custom assistant that takes actions across several systems is the largest build because most of the cost is in the integrations and safety, not the chat itself.
Because these ranges swing so widely with scope, NextiqumAI does not publish a single price. We give an exact quote after a short scoping call. If you want an instant ballpark first, Mark, our AI project scoper, will sketch a build plan and rough timeline for your idea in seconds.
The cost people forget: running it
A chatbot is not a one-time purchase. If it uses a hosted language model, every conversation has a small usage cost, and busy or abused bots can run that up quickly. This is exactly why guardrails matter: per-user limits, duplicate-message filtering and blocking off-topic spam keep your running costs predictable.
How to avoid overspending
Start with the narrowest version that delivers value, ship it, and expand based on real conversations rather than guesses. Most businesses do not need a bot that does everything on day one; they need one that handles their top questions reliably and hands off cleanly when it cannot help.