AsOf

OpenAI · model releaseGPT-5-Codex

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

What the statuses mean

Valid from
2025-09-15
Valid until
still holds
Published
2025-09-15
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
0.70

Sources

“This addendum to the GPT-5 system card shares a new model: GPT-5-Codex, a version of GPT-5 further optimized for agentic coding in Codex.”— 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 (2025-09-15), 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 The URL never changes: a superseded claim stays at the same address.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. "OpenAI model release: GPT-5-Codex", as of 2025-09-15. Claim clm_8536EEF51D93, https://asof.is/claim/clm_8536EEF51D93, accessed 2026-11-08. Source: https://openai.com/index/gpt-5-system-card-addendum-gpt-5-codex.
APA
AsOf. (2025). OpenAI model release: GPT-5-Codex (as of 2025-09-15) [Record clm_8536EEF51D93]. Retrieved November 8, 2026, from https://asof.is/claim/clm_8536EEF51D93 (source: https://openai.com/index/gpt-5-system-card-addendum-gpt-5-codex)
BibTeX
@misc{asof_clm_8536EEF51D93,
  author = {AsOf},
  title = {OpenAI model release: GPT-5-Codex},
  year = {2025},
  howpublished = {\url{https://asof.is/claim/clm_8536EEF51D93}},
  note = {Claim clm\_8536EEF51D93, as of 2025-09-15; source: https://openai.com/index/gpt-5-system-card-addendum-gpt-5-codex},
  urldate = {2026-11-08}
}

On the record

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