PeopleofSuperintelligence

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Maddie Simens

Also known as Madeline Simens

Maddie Simens is a designer at OpenAI whose AI work includes coauthoring the 2022 InstructGPT paper, the 2023 GPT-4 technical report, and the 2024 GPT-4o System Card. She began as a UX design co-op at Rdio in 2014, then worked as a product designer at Wistia and Stripe. Her 2022 InstructGPT paper presents language-model fine-tuning with human feedback; the GPT-4 report describes image-and-text inputs; and the GPT-4o System Card covers model capabilities, limitations, and safety evaluations. A 2026 Language model automations patent named her as an inventor and listed OpenAI Opco LLC as assignee; as of October 2026, she designs at OpenAI.

Now at
OpenAI

Timeline

  1. 2014

    UX design at Rdio

    She works as a UX design co-op at Rdio in 2014.

  2. 2015–2016

    Product design at Wistia

    She works as a product designer at Wistia in 2015–2016.

  3. 2016–2020

    Product design at Stripe

    She works as a product designer at Stripe in 2016–2020.

  4. 2022

    Co-authoring InstructGPT

    In 2022, she coauthors the paper Training language models to follow instructions with human feedback. It introduces InstructGPT by further fine-tuning a supervised model with reinforcement learning from human feedback.

  5. 2023

    GPT-4 technical report

    In 2023, she coauthors GPT-4 Technical Report, which describes GPT-4 as a multimodal model that accepts image and text inputs and produces text outputs.

  6. 2024

    The GPT-4o system card

    In 2024, she coauthors the GPT-4o System Card. It details GPT-4o's capabilities, limitations, and safety evaluations.

  7. January 2026

    Language model automations

    In January 2026, the Language model automations patent lists Madeline Simens as an inventor and OpenAI Opco LLC as assignee.

  8. As of October 2026

    Designing at OpenAI

    As of October 2026, she designs at OpenAI.

Career

  1. NowOpenAIDesigner
  2. 2016–2020StripeProduct Designer
  3. 2015–2016WistiaProduct Designer
  4. 2014RdioUX design co-op

From the biography.

  1. 22 of 133 people shaping AI with a former OpenAI role now work at AnthropicIncludes Maddie Simens. Our estimates of where OpenAI recruits came from and where 133 people with former OpenAI roles work now, including the companies and labs they founded.
  2. Among employers with 30+ full-time cases, OpenAI leads primary technical role H-1B pay at $310,000, and Amazon, Google and Microsoft file 57% of all casesIncludes OpenAI. Across 440,669 certified US H-1B filings from 44 employers (FY2020–FY2026), OpenAI leads primary technical role base pay at $310,000 and xAI leads overall base pay at $290,000.
  3. The median h-index is 48 at universities and 14 at frontier AI labsIncludes OpenAI. The median h-index is 48 at universities and 14 at frontier AI labs. We compare publishing careers, recent citations, dual appointments and job moves across 2,420 university researchers and 308 frontier-lab researchers.
  4. Companies supply the most prior-work hires at 7 of the 9 frontier AI labsIncludes OpenAI. Our estimates of the organizations where 550 people worked directly before joining 9 frontier AI labs across 620 career transitions, comparing the main feeder organizations per lab.

Colleagues

People with dated positions at the same organization in the same years.

Sources and credits

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

  1. Maddie Simens maddie.ai. Checked 21 October 2026.
  2. Training language models to follow instructions with human feedback arxiv.org. Checked 21 October 2026.
  3. GPT-4 Technical Report arxiv.org. Checked 21 October 2026.
  4. GPT-4o System Card arxiv.org. Checked 21 October 2026.
  5. US12518109B1 - Language model automations - Google Patents patents.google.com. Checked 21 October 2026.
  6. US 12,518,109 B1, Language model automations patentsgazette.uspto.gov. Checked 21 October 2026.