How AI Killed the Discovery Call | Sam Senior, Founder & CEO of TestBox

EPISODE · Apr 16, 2026 · 57 MIN

How AI Killed the Discovery Call | Sam Senior, Founder & CEO of TestBox

from The GTMnow Podcast · host GTMnow

AI isn't just changing how we sell. It's changing how buyers make decisions before they ever talk to you.Sam, Founder and CEO of TestBox, joins Sophie on GTMnow to break down exactly what's happening to the B2B software buying process right now, and what go-to-market leaders need to do about it immediately.If you're a founder, CRO, or AE wondering why your pipeline feels different, this conversation will give you a clear framework for what's happening and what to do next.What we cover:Why 70-80% of purchase decisions are already made before the first call (and it's accelerating)The shift from discovery calls to validation calls, and how to prepareCEO (AI-version of SEO): how LLMs are shaping what buyers believe about your productThe "day one shortlist" shrinking from 3-4 vendors to 1-2 vendorsAgent-to-agent procurement: Sam's timeline for when AI agents fully take over buyingWhy the mid-funnel is actually getting longer, not shorterThe "Fake Nothing, Prove Everything" campaign that went viral post-Series AHow TestBox runs 15 AI experiments per week across the entire companyUsing Google Vertex video analysis to read prospect body language on sales callsHow to build an AI-first culture without burning out your teamBooks: The 15 Commitments of Conscious Leadership, No Ego, Courageous Marketing, Good to GreatTimestamps:0:00 - Cold open1:09 - What TestBox does2:43 - How buying has changed5:48 - What founders/CROs should do now7:05 - GEO: AI version of SEO9:02 - Why mid-funnel is expanding21:17 - Agent-to-agent procurement26:02 - All procurement by agents in 3-5 years29:09 - How vendors differentiate beyond product33:30 - The croissant campaign breakdown45:50 - 15 AI experiments per week47:10 - Analyzing prospects via video AI48:29 - Building AI culture in your team52:39 - Book recommendationsGuest: Sam Senior, Founder and CEO TestBoxLinkedin: ⁠https://www.linkedin.com/in/samuelsenior/⁠TestBox:⁠ https://www.testbox.com⁠Host: Sophie Buonassisi, SVP Marketing at GTMnowLinkedIn: https://www.linkedin.com/in/sophiebuonassisi/Newsletter:⁠ https://thegtmnewsletter.substack.com⁠Visit us on:⁠ https://gtmnow.com⁠Follow us on LinkedIn: / gtmnowFollow us on X (Twitter):⁠ https://x.com/GTMnow_⁠ Follow us on YouTube: / @gtm_now Follow us on TikTok: / gtmnow_ Follow us on Instagram: / gtmnow_  The GTMnow PodcastThe GTMnow Podcast is a weekly podcast featuring interviews with the top 1% GTM executives, VCs, and founders. Conversations reveal the unshared details behind how they have grown companies, and the go-to-market strategies responsible for shaping that growth.Visit gtmnow.com for more episodes and other interesting content.The GTMnow Podcast The GTMnow Podcast is a weekly podcast featuring interviews with the top 1% GTM executives, VCs, and founders. Conversations reveal the unshared details behind how they have grown companies, and the go-to-market strategies responsible for shaping that growth.Visit gtmnow.com for more episodes and other interesting content. 

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How AI Killed the Discovery Call | Sam Senior, Founder & CEO of TestBox

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