Useful summary — ₹0.8631 for marketing is the headline rate, but the part that quietly blows up budgets is what AI bots do with the replies. Every bubble a bot sends outside the free tier is a billable message, so a chatty agent that answers in 3–4 short bubbles instead of one message can multiply your bill 3–4x without any extra value being delivered. What helped us: treat every conversation as a budget — merge bubbles into one message, check the 24h service window before sending utility templates, and log per-template cost daily so the bill never surprises you at month end. I'm building a small guard tool for exactly this (a proxy that sits in front of the Cloud API and flags expensive patterns before they ship). Happy to share numbers once it's live.