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AI Engineer NYC 2026

Welcome Back - Featured Keynotes

Day 1 · Oct 13 Day 1 digest · More from this day

A voice-over announcer brings MC Alex Lieberman back to the main stage to open the closing keynote block of day one at AI Engineer New York 2026.

TL;DR

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  • At [06:59:40 | 3:47:31 PM], an off-stage announcer reintroduces the MC by name, role, and firm: “our MC, Alex Lieberman, managing partner at 10X.”
  • Lieberman runs a quick audience energy check (“Who is the most energized in the room?”) and welcomes attendees back to the closing keynote block.
  • His self-introduction is cut at the segment boundary; the welcome-back block then holds for about 10 minutes of untranscribed stream time before he resumes (segment 042), leading into keynotes from Coatue, General Intuition, and Nous Research.

Key lessons

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  1. The show’s re-entry formula after the afternoon track is fixed: a voice-off announcer names the MC, his role, and his firm (“managing partner at 10X”), then hands him the stage for the closing block.
  2. Lieberman’s crowd-work pattern is an energy check first, business second: he asks “Who is the most energized in the room?”, crowns the loudest responder, then delivers his standard self-intro as “co-founder, co-managing partner at 10X, Applied AI partner for…” (the sentence is cut by the segment boundary).
  3. The livestream ran ahead of the published agenda: the agenda schedules “Welcome Back - Featured Keynotes” at 4:25-4:30 PM, but the segment occurs at about 3:47 PM on the stream. When timing matters, trust the video clock and wall-clock stamps over the agenda slot.

Watch this session

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Alex Lieberman, Unidentified stage announcer · 3:47:31 PM ET–3:47:35 PM ET · announcement · Watch on YouTube from 06:59:40

Notable quotes

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  • “To guide us back into the closing keynotes of today’s program, please welcome once again to the stage our MC, Alex Lieberman, managing partner at 10X.” - [06:59:40 | 3:47:31 PM]
  • “Well, welcome back for the closing keynote block here at AI Engineer New York 2026.” - [06:59:42 | 3:47:34 PM]
  • “I’m Alex Lieberman, co-founder, co-managing partner at 10X, Applied AI partner for…” - [06:59:43 | 3:47:34 PM]

Session narrative

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After the last afternoon talk (“Everyone Has AI. Who Has the Advantage?” by Sid Pednekar) and a roughly 13-minute room changeover, day one enters its final stretch. An off-stage announcer opens the closing keynote block at [06:59:40 | 3:47:31 PM] with a scripted re-entry line that reintroduces the MC by name, role, and firm. Alex Lieberman takes the stage, greets the room, and runs a fast energy check, asking who in the room is most energized and singling out the loudest responder.

He then delivers the frame for the rest of the program - “welcome back for the closing keynote block here at AI Engineer New York 2026” - and begins his standard self-introduction as co-founder and co-managing partner at 10X. The segment cuts off mid-sentence at [06:59:43 | 3:47:34 PM]. The stream then holds for about 10.3 minutes with no transcribed audio (segment 041, likely a sponsor reel, video, or stage reset) before Lieberman resumes at [07:10:05 | 3:57:57 PM] with sponsor acknowledgments and the introduction of Frank Long (Coatue), the first of three closing keynotes.

Speaker details

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Alex Lieberman - Co-founder and Co-Managing Partner, Tenex (10X). Serial entrepreneur best known as co-founder of Morning Brew, the business media company he started as a college newsletter and grew to 2M+ daily readers before its ~$75M sale to Business Insider in 2020. He now co-leads Tenex, an AI engineering and transformation firm that helps companies go from AI-absent to AI-native, and hosts the Founder’s Journal podcast. At AI Engineer NYC 2026 he served as MC for day one.

Unidentified stage announcer - Off-stage voice-over announcer (identified from session). Delivers the scripted re-entry line that hands the stage back to the MC for the closing keynote block.

Full timestamped transcript

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[06:59:40 | 3:47:31 PM] To guide us back into the closing keynotes of today's program, please welcome once again to the stage our MC, Alex Lieberman, managing partner at 10X.
[06:59:41 | 3:47:33 PM] How's it going?
[06:59:42 | 3:47:33 PM] Who is the most energized in the room?
[06:59:42 | 3:47:33 PM] Whoever that was, most energized.
[06:59:42 | 3:47:34 PM] Well, welcome back for the closing keynote block here at AI Engineer New York 2026.
[06:59:43 | 3:47:34 PM] I'm Alex Lieberman, co-founder, co-managing partner at 10X, Applied AI partner for...