Building an AI chatbot for your business typically costs $500–$15,000 depending on how custom it is: a configured off-the-shelf bot runs $500–$2,000 to set up (plus $50–$500 a month), a custom-built chatbot $3,000–$15,000, and an advanced one that answers from your own documents (RAG) or takes actions $15,000–$50,000+. Here's how to tell which tier you actually need.
The three tiers
| Tier | Build | Monthly | What it does |
|---|---|---|---|
| Configured off-the-shelf | $500–$2,000 | $50–$500 | FAQ/scripted answers, lead capture, handoff to a human |
| Custom build | $3,000–$15,000 | $100–$800 | Trained on your business, branded, integrated with your CRM |
| Advanced (RAG / agentic) | $15,000–$50,000+ | $500–$3,000+ | Answers from your knowledge base, takes actions, multi-step |
What drives the cost
- Knowledge source. A scripted FAQ bot is cheap; one that answers accurately from hundreds of your own documents needs retrieval (RAG) and testing.
- Integrations. Reading and writing to your CRM, calendar or helpdesk adds build time.
- Actions vs answers. A bot that books a meeting or creates a record costs more than one that only replies.
- Usage. LLM-powered bots have a per-conversation API cost — a real line item at volume.
Which tier do you need?
Most SMBs are well served by the middle tier: a custom bot trained on their business, integrated with the CRM, for tier-one support or lead capture. Jump to advanced only if you genuinely need answers from a large knowledge base or the bot to take actions. You can see a working example in our AI lead follow-up demo.
Don't buy the cheapest
A $500 bot that gives wrong answers costs you customers, not saves you money — the value end means accurate, tested, and integrated, at a fair price. Price the payback with the automation ROI calculator; our AI consulting team scopes chatbots to the right tier rather than overselling one.
Frequently asked questions
How much does it cost to build an AI chatbot?
A configured off-the-shelf chatbot costs $500–$2,000 to set up plus $50–$500/month; a custom-built bot trained on your business runs $3,000–$15,000; an advanced bot that answers from your documents (RAG) or takes actions is $15,000–$50,000+. Usage adds a per-conversation API cost.
What tier of chatbot does a small business need?
Most SMBs are best served by the middle tier: a custom bot trained on their business and integrated with the CRM for tier-one support or lead capture. Move to advanced only if you truly need answers from a large knowledge base or the bot to take actions.
Why not just buy the cheapest chatbot?
A cheap bot that gives wrong answers costs you customers rather than saving money. The value end means accurate, tested and integrated at a fair price — not the lowest sticker with no testing behind it.
Yash
Founder & Principal Consultant, Ynexgen
Yash leads Ynexgen, helping small and mid-sized businesses turn technology into a stronger foundation for growth — 7+ years across Salesforce CRM, websites, and AI adoption.
