# @20vc on YouTube

- **Type:** Video
- **Original URL:** https://youtube.com/watch?v=ya6D6-SizbI
- **Gondola URL:** https://gondola.cc/posts/68690824-20vc-youtube
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/1687b7882b.jpg
- **Posted:** 2026-08-01T14:00:20.000+00:00
- **Account Owner:** 20VC with Harry Stebbings (@20vc) — https://gondola.cc/20vc

## Caption

Joon Sung Park is the Founder and CEO of Simile, the AI simulation company building foundation models of human behaviour; allowing companies to test how real people may think, decide and act before making a decision in the real world. Simile has now raised $300 million in total, including a $200 million Series B announced last week at a $2 billion valuation, led by Greenoaks and Index Ventures.

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Timestamps:
00:00 Intro
01:26 The Valentine's Day Simulation That Put Joon on the Map
03:56 How Agents Got Memory, Planning & Reflection — The Origin Story
07:07 Simile vs. Frontier Models
07:59 Say vs Do: Why Behaviour Data Beats Survey Data
09:33 Prediction Is Overrated
12:31 Is Simile Just a Fancy Qualtrics? The TAM Question
15:48 How Many People Do You Need for Accurate Simulations?
16:56 The Data Flywheel: How the World Becomes the Ground Truth
19:59 Can Simile Simulate Elections, Democracies & Wicked Problems?
21:43 Who Should and Shouldn't Have Access to Simulation Technology?
33:07 How to Build a World-Class Research Team That Doesn't Quit
35:59 The Two Contradictory Superpowers That Make Great Founders
39:10 Competing for Research Talent in the Tens of Millions
43:28 From Researcher to CEO: What Joon Looks for in Academic Founders
44:33 Raising $300M in Six Months: How the Round Came Together
58:01 Is Simile the Future of Love and Matchmaking?
1:00:45 Quick Fire Round

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Subscribe on Spotify:
https://open.spotify.com/show/3j2KMcZTtgTNBKwtZBMHvl?si=85bc9196860e4466

Subscribe on Apple Podcasts:
https://podcasts.apple.com/us/podcast/the-twenty-minute-vc-20vc-venture-capital-startup/id958230465

Follow Harry Stebbings on X:
https://twitter.com/HarryStebbings

Follow Joon Sung Park on X:
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https://www.tiktok.com/@20vc_tok

Visit our Website:
https://www.20vc.com

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#20vc #harrystebbings #simulation #ai #ceo #founder

## Stats

- **Views:** 18,506
- **Likes:** 401
- **Shares:** 0
- **Comments:** 31

## Credits

| Name | Username | Profile | Role |
| --- | --- | --- | --- |
| 20VC with Harry Stebbings | @20vc | https://gondola.cc/20vc | Podcast |

## Tags

harrystebbings, ceo, simulation, ai, founder, 20vc

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