PeopleofSuperintelligence

Builder

Demi Guo

Also known as Guo Wenjing

As of October 2026, Demi Guo is co-founder and CEO of Pika, an AI video company. She won a silver medal at the 2015 International Olympiad in Informatics and later studied math and computer science at Harvard. Before co-founding Pika, she worked as an engineer at Meta's AI research division and pursued a PhD at Stanford. In April 2023 she left Stanford to co-found the company with Chenlin Meng, and in November 2023 Pika announced a $55 million round led by Lightspeed Venture Partners. In June 2024 the company raised an $80 million Series B led by Spark Capital, which brought its total funding to $135 million.

Now at
Pika
Works
20
Citations
4,631
h-index
12

Publication numbers from OpenAlex, as of 15 October 2026.

Timeline

  1. 2015

    A silver medal in informatics

    She wins a silver medal at the 2015 International Olympiad in Informatics.

  2. By 2023

    Harvard, Meta, then Stanford

    Before co-founding Pika in April 2023, she studies math and computer science at Harvard, works as an engineer at Meta's AI research division, and pursues a PhD at Stanford.

  3. April 2023

    Leaving Stanford for Pika

    She drops out of her Stanford PhD program and co-founds Pika in April 2023 with fellow student Chenlin Meng.

  4. November 2023

    A $55 million funding round

    Pika, an AI video platform that edits and generates videos from captions and still images, announces a $55 million round led by Lightspeed Venture Partners in November 2023.

  5. June 2024

    An $80 million Series B

    In June 2024, Pika announces an $80 million Series B led by Spark Capital, which brings its total funding to $135 million.

  6. October 2025

    Predictive Video and 16.4 million users

    In early October 2025, Pika launches Predictive Video, a feature that predicts movements and interactions, and the company reports 16.4 million users across several creative apps.

  7. As of October 2026

    Running Pika as CEO

    She is co-founder and CEO of Pika.

Sources and credits

Photo: We have no published photo of Demi Guo yet. Send us a free-licensed photo.

  1. Careers — Pika pika.art. Checked 15 October 2026.
  2. Pika, which is building AI tools to generate and edit videos, raises $55M | TechCrunch techcrunch.com. Checked 15 October 2026.
  3. Pika, a new TikTok-like AI app, makes playful, creative short videos from just a few words | Fortune fortune.com. Checked 15 October 2026.
  4. Pika Labs Secures $80M in Series B Funding maginative.com. Checked 15 October 2026.
  5. Meet Demi Guo, Harvard graduate behind $470M AI video startup Pika - VnExpress International e.vnexpress.net. Checked 15 October 2026.