Build costs: what the market quotes
- Itransition publishes AI chatbot proof-of-concept costs starting at $5,000 and pilots at $10,000–$20,000.
- Cleveroad estimates rule-based bots at $2,000–$15,000+, NLP-based bots at $18,000–$80,000+ and LLM-based bots at $35,000–$120,000+ (at $50–$80/hour).
- Master of Code puts agency-built AI chatbots at $75,000–$150,000+.
Our typical bands:
| Scope | Price | Timeline |
|---|---|---|
| Pilot: one channel, one knowledge base, handoff, accuracy report | From $4k | 2–4 weeks |
| Production assistant: multi-channel, CRM/helpdesk integration, analytics | $12k–$35k | 6–10 weeks |
| Agentic workflows: bookings, refunds, order changes with approvals | $35k+ | 3+ months |
Subscription chatbots: what they cost
As of September 2026, Intercom lists its Fin AI agent at $0.99 per outcome, alongside helpdesk seats at $29, $85 or $132 per month. Simpler small-business chatbot tools like Quickchat list plans from about $9 to $99 a month. Pricing changes often - check the vendor's page.
The volume math
Per-resolution pricing scales with success. An illustrative example at 3,000 AI resolutions a month:
| Subscription (per resolution) | Custom assistant | |
|---|---|---|
| Monthly usage cost | 3,000 × $0.99 ≈ $2,970 | AI model usage + hosting (often a few hundred dollars at this volume) |
| Upfront | Setup time | $12k–$35k build |
| Year one | ≈ $35,600 + seats | Build + ~12 months of running costs + maintenance |
At a few hundred resolutions a month, subscription tools are usually cheaper and faster. At thousands a month - or when the bot must do things a subscription tool can't - owning it tends to win within a year or two. Model your own volumes; AI usage costs depend heavily on conversation length and model choice.
What really drives a custom chatbot's cost
- Knowledge quality: clean, current, non-contradictory content makes bots accurate. Messy content is the top cause of wrong answers.
- Channels: each channel (web, WhatsApp, SMS, Slack) has its own constraints.
- Actions: reading data is simpler than changing it. Actions need permissions, confirmations and audit logs.
- Evaluation: a test set of real questions, run before launch and after every change.
- Guardrails and handoff: topics that must always go to a human, and smooth escalation with context.
Choosing
Choose a subscription tool if you need help-center Q&A on your website, your volume is modest and the vendor's integrations cover you. Choose custom if you need WhatsApp or SMS, actions inside your systems, strict rules on what the bot may say, or you're paying significant per-resolution fees.
Either way, insist on an accuracy measurement before launch. See AI chatbot development.
Sources
- Itransition - AI chatbot development
- Cleveroad - Chatbot development cost
- Master of Code - Chatbot pricing
- Intercom - Pricing (checked September 2026)
- Quickchat - How much does a chatbot cost
Prices, plans and laws change. We review this guide periodically; check the linked sources for the latest figures. Nothing here is legal or financial advice.
