From live streaming giant Twitch to a brief stint at the helm of OpenAI, Emmett Shear’s career has been defined by navigating transformative moments in tech. This profile details the remarkable journey of the entrepreneur, from his early coding days and the creation of Justin.tv to his current focus on AI safety with the newly founded company, Softmax. Shear’s path-and his surprisingly candid assessment of the potential existential risks of artificial intelligence-offers a unique perspective on the evolving relationship between technology and its creators.
The intersection of live streaming and artificial intelligence might not immediately spring to mind, but both Twitch and OpenAI share a surprising connection: Emmett Shear. The executive has served as CEO of both companies during pivotal moments in their histories.
Born in Seattle in 1983, Shear demonstrated exceptional aptitude from a young age. He attended the Evergreen School, a highly selective private school known for its rigorous academics and resources. It was there, at age eight, that he met Justin Kan, forging a friendship through advanced math classes and games of Magic: The Gathering. Even then, Shear’s personal philosophy centered on a clear principle: “The hard part isn’t having fun finding patterns in data, it’s figuring out how to find data that will lead you to make decisions.” A mindset that would profoundly shape his future, sixteen years later.
Shear continued his education at Yale University, graduating with a degree in computer science in 2005. During his time there, he connected with Michael Seibel, who would later become a founder of Twitch, and whose path would become inextricably linked with Shear and Kan in ways they couldn’t have foreseen.
A Revolutionary Idea: Broadcast Your Life
Table of Contents
- A Revolutionary Idea: Broadcast Your Life
- Categories Emerged Based on Content, Defining What Each Channel OfferedThe novelty of the idea quickly attracted media attention, and Justin.tv gained popularity, aided by the integration of a chat feature allowing Kan to interact with his audience. This sparked a wave of unprecedented growth.By the summer of 2007, Justin.tv had expanded to 60 different channels. On October 2, it opened to the public, allowing anyone to create a stream. By April 10, 2008, the platform had reached 30,000 registered accounts.A pivotal moment arrived on March 14, 2008, when the team introduced categories based on content type, clarifying the offerings on each channel. This marked the beginning of the end for Justin.tv, or more accurately, the genesis of something far larger.Emmett Shear, in a 2022 image.Robin L Marshall (Getty Images)The gaming category experienced disproportionate growth compared to all others. By June 2011, the team decided to spin it off into a new site called Twitch.tv. The platform quickly gained traction and eventually became synonymous with live streaming. Consequently, on February 10, 2014, Twitch.tv and Justin.tv were rebranded simply as Twitch, marking a new chapter in the company’s history.Twitch and Everything That Followed
- He Stepped Down From Twitch in March 2023, Stating He Was “More Focused on Product Than Creators”Shear continued as CEO and COO of Twitch, but his autonomy was gradually curtailed. Sara Clemens joined as COO, limiting his decision-making power and increasing the integration of Amazon’s services into the platform, sometimes against Twitch’s best interests.He remained in the role for several more years, ultimately stepping down in March 2023, stating he was “more focused on product than creators” and seeking new challenges. Dan Clancy succeeded him as CEO, but his decisions have faced criticism from the Twitch community.AI as a Sign of the Times
- He Estimated the Probability of AI Causing an Existential Catastrophe at Between 5 and 50 PercentThe move was particularly striking, given Shear’s public statements about the potential for AI to end civilization. Someone who estimates the probability of AI causing an existential catastrophe at between 5 and 50 percent doesn’t seem like the ideal person to lead a company contributing to the development of this technology – especially when many involved appear to believe AI will bring only positive outcomes.However, his tenure was short-lived. Altman was reinstated as CEO on November 21, and the dissenting board members left the company, leaving Shear once again without a job and concerned about the future of humanity in the age of AI – at least for the time being.Emmett Shear, cofounder of the live entertainment platform Twitch.ReutersHis Current Project
Justin.tv and the Origins of Streaming
Shear and Kan remained close throughout their lives, even embarking on their first venture together as part of the inaugural class of the Y Combinator startup accelerator.
Founded in March 2005, Y Combinator provides not only capital but also technical and human resources to help tech-focused individuals launch their companies. Still active today, Y Combinator has supported companies like Airbnb, Coinbase, Cruise, DoorDash, Dropbox, Instacart, Reddit, Stripe, Scale AI, Deel, Helion Energy, and Twitch. While Shear and Kan’s initial venture wasn’t a resounding success, it laid the groundwork for their future achievements.
As part of the program’s first cohort, they created Kiko, a calendar application similar to Google Calendar. Unfortunately, Google launched its own Calendar shortly after, diminishing Kiko’s potential. They ultimately sold Kiko to eBay for $250,000, a profitable outcome that allowed them to pursue the project that would ultimately propel them to success.
They returned to Y Combinator with a new idea, joined by Michael Seibel and Kyle Vogt, to create a YouTube-style website focused on live content, where users could broadcast their own streams. They named it Justin.tv.
Though the name lacked immediate appeal, the concept was groundbreaking. The first channel on the site – and for a long time, the only one – was Justin Kan’s personal stream. Launched at midnight on March 19, 2007, Kan began broadcasting his life 24/7, wearing a webcam attached to a baseball cap. The inspiration behind the idea remains unclear, but as Shear would later say, “The most surprising thing about starting a company, for me, is how easy it is to solve problems. The hard part is figuring out what problems are worth solving.”
Categories Emerged Based on Content, Defining What Each Channel Offered
The novelty of the idea quickly attracted media attention, and Justin.tv gained popularity, aided by the integration of a chat feature allowing Kan to interact with his audience. This sparked a wave of unprecedented growth.
By the summer of 2007, Justin.tv had expanded to 60 different channels. On October 2, it opened to the public, allowing anyone to create a stream. By April 10, 2008, the platform had reached 30,000 registered accounts.
A pivotal moment arrived on March 14, 2008, when the team introduced categories based on content type, clarifying the offerings on each channel. This marked the beginning of the end for Justin.tv, or more accurately, the genesis of something far larger.
The gaming category experienced disproportionate growth compared to all others. By June 2011, the team decided to spin it off into a new site called Twitch.tv. The platform quickly gained traction and eventually became synonymous with live streaming. Consequently, on February 10, 2014, Twitch.tv and Justin.tv were rebranded simply as Twitch, marking a new chapter in the company’s history.
Twitch and Everything That Followed
A Spin-Off That Exceeded Expectations
Up until this point, Shear had primarily been a partner at Justin.tv without significant executive responsibility. However, with the Twitch spin-off, his role expanded. On August 29, 2011, Shear became CEO of Justin.tv.
Justin.tv officially shut down on August 5, 2014, transitioning fully to Twitch. Shear remained at the helm, now as CEO of Twitch, where he implemented a series of significant changes. These included improving video quality, increasing server capacity, enabling the export of highlight clips to YouTube, and redesigning the video interface. He also made some changes that proved unpopular with the community, such as limiting broadcast storage to 14 days for most users, 60 days for partners, and subscribers to Turbo.
Despite these adjustments, the improvements attracted attention from Amazon, which made a compelling acquisition offer. On August 25, the companies agreed to Amazon’s purchase of Twitch for $970 million in cash. While YouTube reportedly also expressed interest, potential antitrust concerns made that deal unfeasible, paving the way for Amazon to finalize the acquisition within a month. The deal underscored the growing value of live streaming as a form of entertainment and community building.
He Stepped Down From Twitch in March 2023, Stating He Was “More Focused on Product Than Creators”
Shear continued as CEO and COO of Twitch, but his autonomy was gradually curtailed. Sara Clemens joined as COO, limiting his decision-making power and increasing the integration of Amazon’s services into the platform, sometimes against Twitch’s best interests.
He remained in the role for several more years, ultimately stepping down in March 2023, stating he was “more focused on product than creators” and seeking new challenges. Dan Clancy succeeded him as CEO, but his decisions have faced criticism from the Twitch community.
AI as a Sign of the Times
Everyone Ends Up in the Same Place
Shear’s departure from Twitch wasn’t followed by immediate employment elsewhere, but he soon found a new opportunity. His next role was particularly noteworthy, given his perspective on technology: he was appointed interim CEO of OpenAI.
In November 2023, OpenAI’s board removed Sam Altman from his position due to a lack of confidence. While the details remain unclear, a faction of the board sought to steer the company in a different direction. Shear stepped in on November 19, 2023, replacing Altman as CEO of OpenAI.
He Estimated the Probability of AI Causing an Existential Catastrophe at Between 5 and 50 Percent
The move was particularly striking, given Shear’s public statements about the potential for AI to end civilization. Someone who estimates the probability of AI causing an existential catastrophe at between 5 and 50 percent doesn’t seem like the ideal person to lead a company contributing to the development of this technology – especially when many involved appear to believe AI will bring only positive outcomes.
However, his tenure was short-lived. Altman was reinstated as CEO on November 21, and the dissenting board members left the company, leaving Shear once again without a job and concerned about the future of humanity in the age of AI – at least for the time being.
His Current Project
In March 2025, Shear cofounded Softmax, an AI-focused company specifically dedicated to researching how to align artificial intelligence with human interests and mitigate potential catastrophes.
His approach reflects his concerns. Rather than rejecting AI outright, he’s working to make it as safe as possible, believing, in his own words, “The Nazis were evil, but I’d rather have literal Nazis rule the world forever than flip a coin risking everything.”
Whether his efforts will be accepted or successful remains to be seen, given the challenging start to his involvement in AI with OpenAI. However, given the success of Justin.tv and Twitch, it’s clear he possesses the vision and perspective to bring his ventures to fruition.
