How Much Does an AI Chatbot Cost to Build? (2026 Pricing Guide)

“Add an AI chatbot” can mean a widget that answers ten questions from your FAQ page, or an agent that books appointments, checks orders and updates your CRM. Those are very different projects. Here is what each kind costs in 2026 and what you pay to keep it running.

The short answer

A custom AI chatbot built by a development team typically costs $4,500–$12,000 for a simple FAQ bot, $24,000–$60,000 for an LLM-powered chatbot, and $72,000–$210,000 or more for an AI agent with deep integrations. Running costs are usually $400–$6,000 per month.

Typical 2026 price ranges in the US

• Simple FAQ or rule-based bot: $4,500–$12,000 — answers set questions and hands off to a person; about 3–5 weeks.
• Customer support bot: $15,000–$40,000 — answers from your help content and escalates with context.
• Sales or lead-qualification bot: $20,000–$55,000 — asks qualifying questions and sends leads to your CRM.
• LLM chatbot: $24,000–$60,000 — natural conversation on a modern AI model with guardrails; about 8–14 weeks.
• Knowledge-base assistant: $30,000–$80,000 — searches your documents and answers with sources (retrieval-augmented generation).
• AI agent with integrations: $72,000–$210,000+ — takes actions in your systems; about 16–28 weeks.

These are typical ranges for professional teams in the US. Off-the-shelf chatbot subscriptions cost far less up front, and smaller teams can deliver a focused first version for less than these ranges.

Desverso’s pricing: Desverso builds AI chatbots, agents and AI features from $3,000, starting with a focused first version trained on your own content. See AI development and AI agents.

What drives the cost

• What the bot can do — answering questions is cheap; taking actions such as booking, refunds or record updates is where cost rises.
• Your content — clean help articles and policies make training fast; scattered PDFs and emails need preparation first.
• Integrations — CRM, booking, ecommerce, help desk and phone systems each add work.
• Guardrails and testing — keeping answers accurate, on-brand and safe takes evaluation work, especially in health, finance and legal.
• Channels — website, WhatsApp, SMS, voice and inside your app each need their own setup.
• Privacy and compliance — health data, payments and children’s data need extra controls.

Monthly costs to budget for

• AI model usage — about $200–$1,500 per month for 10,000 conversations, and up to $5,000 or more at high volume.
• Hosting and infrastructure — about $100–$500 per month.
• Review and improvement — a few hours a month reading conversations and fixing weak answers.
• Model updates — retesting when the underlying AI model changes, typically every few months.

How to keep the cost under control

• Start with the 20 questions that fill your inbox, not everything at once.
• Let the bot hand off to a person with the conversation attached.
• Add actions (bookings, updates) only after answers are reliable.
• Measure resolved conversations and leads, not message counts.

Frequently asked questions

How much does it cost to build an AI chatbot?

A custom AI chatbot built by a development team typically costs $4,500–$12,000 for a simple FAQ bot, $24,000–$60,000 for an LLM-powered chatbot, $30,000–$80,000 for a knowledge-base assistant, and $72,000–$210,000 or more for AI agents with deep integrations.

What are the monthly costs of an AI chatbot?

Expect roughly $400–$6,000 per month in total: AI model (API) usage of about $200–$5,000 depending on volume, hosting of about $100–$500, and time to review conversations and improve answers.

How long does it take to build an AI chatbot?

A simple FAQ chatbot takes about 3–5 weeks, an LLM chatbot about 8–14 weeks, and an AI agent with integrations about 16–28 weeks.

Should I use an off-the-shelf chatbot or build a custom one?

Start off-the-shelf if you only need answers from your website. Build custom when the bot must use your own systems, follow your rules, book or update records, or keep data under your control.

What does Desverso charge to build an AI chatbot?

Desverso builds AI chatbots, agents and AI features from $3,000, trained on your own content and connected to your tools, with a fixed written quote after a free strategy call.

The bottom line

A focused AI chatbot can be affordable; the price climbs when the bot needs to take actions across your systems. Decide what it must do in its first month, budget for monthly AI usage, and get a fixed scope in writing. Related guides: How AI Is Quietly Reshaping Everyday Software and How Much Does It Cost to Build an App in 2026?

Want a real number for your project? Desverso is a US web, app and software agency based in Bellevue, WA, working remotely with businesses across the United States and Canada. Book a free strategy call or call +1 (425) 380-4298.