Custom AI chatbot development for UK businesses typically costs £3,000 to £80,000 depending on scope. A focused FAQ chatbot with one channel and one knowledge source sits in the £3,000 to £15,000 range. Mid-complexity RAG chatbots with Salesforce, HubSpot, Zendesk or Microsoft Dynamics 365 integration, multi-channel deployment (web + WhatsApp + voice), UK GDPR controls and analytics dashboard sit in the £18,000 to £40,000 range. Enterprise builds with multilingual NLP, complaint detection, FCA-compliant complaint handling and complex escalation logic sit in the £55,000 to £150,000+ range. Ongoing costs cover hosting, monitoring, content updates and model usage (typically £150-£800/month at mid-tier). Softomate quotes fixed project pricing after discovery. Most clients justify spend through faster response times, lower manual triage and higher lead capture within six to twelve months. A discovery session produces a defined budget range before any build work starts.