# clm_CD5AF70E4501

subject: GPT-4.5 (/record/gpt-4-5.md)  
predicate: model_release  
value: GPT-4.5  
valid_from: 2025-02-27  
valid_to: null  
published: 2025-02-27  
recorded: 2026-11-04  
confidence: 0.95  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-05  
checked: 2026-11-04 · mirrors a checked claim on the organization's record  

## 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)

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