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Chris Hallacy

Engineer at OpenAI working on inference infrastructure, product engineering, and prototyping for systems including GPT-4 and DALL-E 2.

Researcher1 organizations3 reports

Profile status: updated

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Contributions are treated as untrusted leads. Public changes happen only after review against public sources.

Trust signals

Profile completeness47%

Public sources2

Official sources1

CountryUnknown

Last reviewedMar 12, 2026

Review outcomeUpdated

Official homepage

updated Unknown location 2 public sources

Latest review note

Cleanup pass C: promoted Chris Hallacy's existing public OpenAI Community profile from other to website.

Public links

website OpenAI Community profile x X profile

Organizations

core OpenAI

Reports

Large Language Models GPT-4 Technical Report Reasoning Models OpenAI o1 System Card Reasoning Models OpenAI o3 and o4-mini System Card

Official and primary sources

https://community.openai.com/u/chrishallacy/summary Official source · homepage

Supporting sources

https://x.com/chrishallacy Supporting source · social

LLMpeople is a public atlas for discovering frontier AI researchers with context, provenance, and respect.