Notes from building this

What it actually takes to ship AI voice calling in India. Written down while it is still fresh, mostly so the next person loses less time than we did.

1. 16 September 2026 What an AI voice call actually costs Voice agents in India are cheaper than almost anyone guesses. The interesting question is not the number, it is who the number is billed to, and what that does to everyone’s incentives.
2. 16 September 2026 We audited our own website and found twenty three wrong claims Nobody made us do it. We checked every factual claim on the marketing site against the code that ships, and the site lost. Here are the ones worth learning from.
3. 13 September 2026 The opt out that did not stop the call We honoured every do not call request perfectly and the calls went out anyway. A compliance bug that only exists on the far side of an API boundary.
4. 13 September 2026 Why we took voice calling off the cloud We had AI voice calling working as hosted software. We rebuilt it onto a PC that belongs to the customer anyway, and it cost us something real at exactly the wrong moment.
5. 13 September 2026 Eight things I learned shipping on Sarvam Voice Agents The undocumented edges of the platform Svarloop runs on. Base paths, key prefixes, cohort uploads, masked numbers, and the DND list that actually stops a call.