Types of chatbots and where they're deployed
Chatbots operate in different channels - on Telegram, embedded in a website as a chat widget, in messengers like WhatsApp and Viber, and sometimes in custom company applications. Each channel has its own characteristics: Telegram is a widely-used messenger with a robust API, a website requires direct frontend integration, while messengers need integration with their respective platforms. Chatbots are used for various tasks - collecting contacts, qualifying leads, answering frequently asked questions, booking services, and processing payments. Companies use bots to reduce the workload on customer service managers and to operate 24/7 without breaks or downtime.
Scenario-based bots versus AI-powered chatbots
A scenario-based bot operates according to a pre-written algorithm. When a user clicks a button or types a command, the bot responds with a pre-set message or performs an action - this could be sending information, routing to an employee, or triggering a process. Such a bot is reliable, predictable, cheaper to develop and maintain, and works well for clear tasks like appointment scheduling or request routing. However, a scenario-based bot cannot understand nuances in user questions and doesn't adapt to new inquiries - anything outside the defined scenarios requires human intervention.
AI-powered bots and when you need them
An AI-powered bot is based on a language model and can understand the meaning of a question, not just search for keywords. It can handle complex discussions, adapt to different phrasings, and even suggest solutions that weren't explicitly programmed. Such bots are valuable for consultations, handling diverse user questions, text analysis, and when you don't have a clear interaction script. The downside is that AI bots are more complex to develop, require tuning and testing with your data, can provide inaccurate answers if misconfigured, and need constant monitoring of response quality. Additionally, using AI typically involves API costs and response delays, so for simple tasks it may be overkill.
Development timelines and costs
A simple scenario-based Telegram bot can be developed in 2-3 weeks, typically costing from $350-1,200 depending on the number of scenarios and integrations. A bot with medium complexity featuring 10-20 scenarios, CRM integration and data collection will require 1-2 months of work and typically costs $1,800-4,800. A complex AI-powered bot with multiple system integrations, custom knowledge base and training on your data might require 3-6 months and cost $3,500-10,000 or more. These prices don't include ongoing expenses for hosting, LLM API usage if you choose an AI bot, and technical support - these are additional costs depending on scale and reliability requirements. Prices vary significantly depending on location and whether you hire a freelancer, small agency, or large company with comprehensive support services.
Integrations: CRM, payments and knowledge bases
A useful chatbot rarely works in isolation. Typically it's integrated with a CRM system to save contacts and conversation history, with payment systems to accept money without human involvement, and with email or notification systems to alert your team about new leads. For AI-powered bots, a custom knowledge base is often essential - a curated set of texts about your company, services, and FAQs that the bot uses to provide accurate answers. Without these integrations, a bot remains just a pretty interface, not a tool for managing real customer interactions. Integrations typically add 2-4 weeks to development depending on the number of systems and API complexity.
Choosing a developer for your chatbot
When selecting a contractor for chatbot development, look beyond price. Choose someone with specific experience building bots in your desired channel. A good contractor will honestly explain when a scenario-based approach is sufficient versus when AI is needed, won't oversell unnecessary features, and can quickly integrate the bot with your systems without extensive rework. S2 Digital has been developing chatbots since 2024, working with both simple Telegram bots and AI-powered solutions, integrating them with CRM systems and payment platforms. We're honest about capabilities and limitations, estimate timelines realistically, don't include unnecessary features, and are ready to discuss both costs and ongoing bot support. The key is that your bot helps your business, not drains resources with constant modifications.