Chelsea Sierra Voss
Chelsea Sierra Voss is a software engineer and former member of OpenAI’s technical staff.
Contents7 sections
Key facts
2011Early competitions
In 2011, Voss was a finalist in the Intel Science Talent Search.[1]
That year, she won an International Biology Olympiad gold medal, placing fourth individually for the United States.[2]
At the 2011 International Linguistics Olympiad, she received an honorable mention as a member of USA White.[3]
2014–2015Programming projects
Her 2014 retroactive project allows past operations to be changed and data-structure state recalculated. Her 2015 Oneliner-izer converts Python programs into a single line.[4]
2015–2019Education, research and engineering
She graduated from MIT in computer science in 2015.[5]
That year, she interned at Khan Academy.[6]
She earned a master’s in computer science in 2016 and also taught linguistics, programming and biology through MIT’s Educational Studies Program.[5]
Her master’s research focused on formal inference for biological signaling models.[6]
Before joining Pilot, she worked at Sendwave.[6]
The August 29, 2017 SASB schedule lists her presentation with Jean Yang and Walter Fontana on automated inference in rule-based biological models.[7]
She was a Pilot software engineer from autumn 2017 to summer 2019.[6]
In a 2019 account, she described Pilot’s engineering work as improving both software and human workflows. Operations-team metrics and feedback informed product decisions, while engineers could consult internal users directly.[8]
In her later career update, she recalled joining OpenAI in 2019.[9]
2020–2021Research at OpenAI
She co-authored the 2020 paper Learning to summarize from human feedback, which trained a reward model from human comparisons and used reinforcement learning to improve summarization.[10]
Published on February 4, 2021, Visualizing Weights connects weights with neuron features while noting that expansion across layers can hide nonlinear effects. Voss adapted it for Distill, upgraded diagrams, edited text and made diagram 12; Chris Olah wrote the original and designed its initial figures.[11]
The February 24, 2021 submission of Zero-Shot Text-to-Image Generation also lists her as a co-author of the DALL·E paper.[12]
Branch Specialization, dated April 5, 2021, examines related functions clustering within network branches. Its credits assign the initial observation to Chris Olah; Voss contributed research and framing, wrote from his initial draft and co-illustrated the article.[13]
2026Stepping back from work
On October 2, 2026, she announced a step back from work to focus on family. Her X biography also describes her as former OpenAI technical staff.[9]
Related Organizations, Websites, and Public Accounts
Personal website: Official link: https://csvoss.com/ (opens in a new window)[14]
X: Official account: https://x.com/csvoss (opens in a new window)[14]
GitHub: Official account: https://github.com/csvoss (opens in a new window)[14]
LinkedInLinkedInLinkedIn is a social networking platform for professionals. It was founded in 2002 by Reid Hoffman and others, launched in 2003, and listed on the New York Stock Exchange in 2011; after Microsoft acquired it for approximately $26.2 billion in 2016, it became a wholly owned Microsoft subsidiary. Its revenue comes from membership subscriptions, advertising, and recruitment solutions.Open the full entry: Official account: https://www.linkedin.com/in/csvoss/ (opens in a new window)[15]
OpenAI: Official website: https://openai.com/ (opens in a new window)[6]
Pilot: Official website: https://pilot.com/ (opens in a new window)[8]
Sendwave: Official website: https://www.sendwave.com/en-us (opens in a new window)[6]
Khan Academy: Official website: https://www.khanacademy.org/ (opens in a new window)[6]
MIT: Official website: https://www.mit.edu/ (opens in a new window)[5]
Sources
- Intel STS 2011 (opens in a new window)
- United States Wins 4 Gold Medals at the International Biology Olympiad (opens in a new window)
- Pittsburgh 2011 (opens in a new window)
- Projects (opens in a new window)
- Chelsea Voss (opens in a new window)
- About (opens in a new window)
- Static Analysis for Systems Biology 2017 (opens in a new window)
- Reflections on Pilot’s Series B (opens in a new window)
- Career update (opens in a new window)
- Learning to summarize from human feedback (opens in a new window)
- Visualizing Weights (opens in a new window)
- Zero-Shot Text-to-Image Generation (opens in a new window)
- Branch Specialization (opens in a new window)
- Chelsea Sierra Voss (csvoss) (opens in a new window)
- Chelsea Sierra Voss (opens in a new window)