# clm_E34C1DCE863F

subject: Codex (/record/openai-codex.md)  
predicate: launched  
value: Codex  
valid_from: 2025-05-16  
valid_to: null  
published: 2025-04-16  
recorded: 2026-11-02  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-14  
cite: AsOf. "Codex launched: Codex", as of 2025-05-16. Claim clm_E34C1DCE863F, https://asof.is/claim/clm_E34C1DCE863F, accessed 2026-11-14. Source: https://developers.openai.com/api/docs/changelog#2025-04-16.  
checked: 2026-11-14 · its source page states the value and the date, as read by an AI model (its publisher's feed entry for the page)  

> Introducing Codex

What https://openai.com/index/introducing-codex says, word for word.

## Sources

- https://developers.openai.com/api/docs/changelog#2025-04-16 (primary, OpenAI, published 2025-04-16)
- https://openai.com/index/introducing-codex (primary, OpenAI, published 2025-05-16)

---

AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.