AsOf

Codex · model releasecodex-1

valid: Two independent sources agree, or a primary source states it: the record asserts this claim.asserted

What the statuses mean

Valid from
2025-05-16
Valid until
still holds
Published
2025-05-16
Recorded by AsOf
2026-11-03
Checked
2026-11-04 · its source page states the value and the date (its publisher's feed entry for the page)
Confidence
0.50

Sources

“Codex is powered by codex-1, a version of OpenAI o3 optimized for software engineering.”— what the publisher's feed entry for the page says, read 2026-11-04

Cite this claim

Each form names the value, its as-of date (2025-05-16), the day you read it (2026-11-08), the claim's stable URL and id and its primary source. The URL never changes: a superseded claim stays at the same address.

Plain text
AsOf. "Codex model release: codex-1", as of 2025-05-16. Claim clm_32F477987025, https://asof.is/claim/clm_32F477987025, accessed 2026-11-08. Source: https://openai.com/index/o3-o4-mini-codex-system-card-addendum.
APA
AsOf. (2025). Codex model release: codex-1 (as of 2025-05-16) [Record clm_32F477987025]. Retrieved November 8, 2026, from https://asof.is/claim/clm_32F477987025 (source: https://openai.com/index/o3-o4-mini-codex-system-card-addendum)
BibTeX
@misc{asof_clm_32F477987025,
  author = {AsOf},
  title = {Codex model release: codex-1},
  year = {2025},
  howpublished = {\url{https://asof.is/claim/clm_32F477987025}},
  note = {Claim clm\_32F477987025, as of 2025-05-16; source: https://openai.com/index/o3-o4-mini-codex-system-card-addendum},
  urldate = {2026-11-08}
}

On the record

/claim/clm_32F477987025.md/v1/claims/clm_32F477987025submit a correction