# clm_CDBC44B4A869

subject: OpenAI (/record/openai.md)  
predicate: released  
value: [GPT-4.5](/record/gpt-4-5.md)  
valid_from: 2025-02-27  
valid_to: null  
published: 2025-02-27  
recorded: 2026-10-30  
confidence: 0.95  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-04  
cite: AsOf. "OpenAI released: GPT-4.5", as of 2025-02-27. Claim clm_CDBC44B4A869, https://asof.is/claim/clm_CDBC44B4A869, accessed 2026-11-08. Source: https://developers.openai.com/api/docs/changelog.md.  
checked: 2026-11-04 · its source page states the value and the date (its publisher's feed entry for the page)  

> We’re releasing a research preview of OpenAI GPT‑4.5, our largest and most knowledgeable model yet

What https://openai.com/index/gpt-4-5-system-card says, word for word.

## Sources

- https://developers.openai.com/api/docs/changelog.md (primary)
- https://openai.com/index/gpt-4-5-system-card (primary, OpenAI, published 2025-02-27)
- https://www.wikidata.org/wiki/Q132804879 (secondary, Wikidata)

---

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