By Shakeel Ahmed — AI Growth Lab | November 13, 2026 Originally published on AI Growth Lab: https://aigrowthlabshakeel.blogspot.com/2026/11/gemini-4-hydrogen-explained.html Imagine calling a small business and getting a helpful answer in under a second, at any hour, for 3.5 cents a minute. That is the promise Retell made on November 12, 2026, when it launched Tell-1, a language model built specifically for live contact-center calls, along with a new Dialer product for outboun