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Builders & open source

Giambattista Parascandolo

Researcher, OpenAI

Giambattista Parascandolo is listed among foundational contributors to OpenAI's o1 reasoning models. OpenAI's official o1 contributions page places him with the core research group that developed reinforcement-learning-based chain-of-thought reasoning for STEM and coding tasks.12

At a glance

Current role
Researcher
Company
OpenAI
Sources cited
2
Profile reviewed

Accomplishments

  • Foundational contributor to OpenAI o1.1

o1

OpenAI credits Parascandolo as a foundational contributor on o1, alongside other researchers who trained models to reason with reinforcement learning and longer chains of thought.12

Timeline

  1. OpenAI o1 announced; listed as foundational contributor.12

Where they work

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References

2 sources · profile reviewed Oct 24, 2026 · data updated Oct 24, 2026

  1. OpenAI o1 ContributionsOpenAI · Official page · accessed Oct 24, 2026
  2. Learning to reason with LLMsOpenAI · Announcement · published Sep 12, 2024 · accessed Oct 24, 2026