Rejected by 100+ investors, Synthesia CEO built a $4B AI startup before ChatGPT boom; Mark Cuban invested $1M after a cold email
Victor RiparbelliMark CubanSteffen TjerrildSynthesia

Rejected by 100+ investors, Synthesia CEO built a $4B AI startup before ChatGPT boom; Mark Cuban invested $1M after a cold email

Synthesia, an AI video startup founded by Victor Riparbelli in 2017, overcame rejection from over 100 investors to achieve a $4 billion valuation, largely due to a pivotal $1 million investment from Mark Cuban after a cold email. The company now serves over 60,000 enterprise customers worldwide.

NDTV+1 source6 August 2026 · 08:47 UTC
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Victor Riparbelli, co-founder of Synthesia, faced rejection from over 100 investors before his AI video startup gained traction. Founded in 2017, Synthesia shifted focus from Hollywood to enterprise solutions, generating over $300,000 in revenue within four months from 1,000 business customers.1610

Today, the company boasts a valuation of $4 billion and serves more than 60,000 enterprise customers globally. Riparbelli emphasizes the importance of resilience, stating, "If you're early to a trend, and you survive long enough for the trend to take off, you'll understand the trend better than most other folks." Cuban's investment was pivotal; he recognized the potential of AI in video production, stating, "AI was the future and that video would be a core element."7811

Initially, Synthesia's technology aimed at Hollywood studios, but the demand was not urgent. Riparbelli noted, "They had completely different quality requirements, and they were very grateful that we even wanted to talk to them." The company eventually pivoted to focus on businesses needing efficient video production for training and internal communications, leading to its current success.

Key Insight
“Synthesia pivoted from Hollywood dubbing to enterprise training videos, generating over $300,000 in revenue within four months from about 1,000 business customers. The company now serves more than 60,000 enterprise customers worldwide, with Cuban citing his belief that "AI was the future and video would be a core element."”
CuriousCats studied:
1
NDTV
“Victor Riparbelli, the co-founder and chief executive of Synthesia, was rejected by more than 100 investors while trying to raise money for his startup.”
NDTV →
2
Hindustan Times
“When Victor Riparbelli launched his AI video startup in 2017, artificial intelligence was still a niche technology rather than the global phenomenon it is today. Five years before ChatGPT introduced millions to generative AI, he believed AI would completely reshape how videos were made.”
Hindustan Times →
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