Best LLM API for Chatbots 2026 — Cut Costs 65% Smart Routing

Why Chatbots Drain Your AI Budget Chatbots eat through tokens faster than any other AI application I've seen. Each conversation turn requires both input and output tokens, and those multi-turn discussions compound the costs brutally. Here's what kills your budget: output tokens cost 3-5x than input tokens across every major provider. When your chatbot generates detailed responses, explanations, or even simple acknowledgments, you're paying premium rates. A typical customer conversation with 8-10 turns can easily consume 15,000-20,000 tokens.