PeopleofSuperintelligence

Builder

Fraser Kelton

Fraser Kelton is an AI product builder whose work spans a mental health startup, OpenAI, and venture investing. He built Koko, which shifted from cognitive behavioral therapy to content moderation with AI before Airbnb acquired it in 2018, and joined OpenAI in 2020. At OpenAI, he served as Head of Product, coauthored the 2022 InstructGPT paper, and led product teams behind ChatGPT and DALL-E. By August 2023, he was a Spark Capital venture partner; as of October 2026, he is a General Partner, Early.

Timeline

  1. 2018

    Koko moves into AI moderation

    He builds Koko as a cognitive behavioral therapy platform, and it shifts to online content moderation with AI before Airbnb acquires it in November 2018.

  2. 2020

    Joining OpenAI

    In 2020, he joins OpenAI; his work there includes writing the organization's first product roadmaps as Head of Product.

  3. 2022

    Co-authoring InstructGPT

    In 2022, he coauthors the InstructGPT paper, which shows how fine-tuning language models with human feedback can align them with user intent.

  4. August 2023

    OpenAI product launches

    By August 2023, he is a venture partner at Spark Capital after leading OpenAI product teams behind ChatGPT and DALL-E.

  5. As of October 2026

    General Partner at Spark

    As of October 2026, he is a General Partner, Early, at Spark Capital.

  1. Google had the most people shaping AI every year from 2014 to 2025Our estimates of which organizations employed the most people shaping AI from 1961 to 2025, with a year-by-year chart.
  2. The United States employs an estimated 53% of people in our data with a known employment countryOur estimates of where AI careers are concentrated now and how countries’ shares of dated positions changed over time.
  3. 46% of living people in our data with known birth and employment countries work outside their birth countryOur estimate of cross-border careers in AI, from country of birth and the country of each current organization.
  4. More people shaping AI studied at Massachusetts Institute of Technology than at any other institutionOur estimates of where the people shaping AI studied and where their careers led, from education records in cited biographies.

Sources and credits

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  1. Fraser Kelton (GP at Spark Capital, former Head of Product at OpenAI) theslowhunch.transistor.fm. Checked 19 October 2026.
  2. Fraser Kelton sparkcapital.com. Checked 19 October 2026.
  3. Fraser Kelton (GP at Spark Capital, former Head of Product at OpenAI) Transcript, Summary & Key Takeaways — transcribe usetranscribe.io. Checked 19 October 2026.
  4. Training language models to follow instructions with human feedback proceedings.neurips.cc. Checked 19 October 2026.
  5. Pendo Announces Pendomonium Festival Agenda Including OpenAI Innovator and Investor Fraser Kelton, Milk Bar Founder Christina Tosi, and a Performance by OutKast Legend Big Boi prnewswire.com. Checked 19 October 2026.