# clm_0C13DA31D781

subject: GPT-4 (/record/gpt-4.md)  
predicate: partnership  
value: [Duolingo](/record/duolingo.md)  
valid_from: 2023-03-14  
valid_to: null  
published: 2023-03-14  
recorded: 2026-11-03  
confidence: 0.50  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-04  
cite: AsOf. "GPT-4 partnership: Duolingo", as of 2023-03-14. Claim clm_0C13DA31D781, https://asof.is/claim/clm_0C13DA31D781, accessed 2026-11-09. Source: https://openai.com/index/duolingo.  
checked: 2026-11-04 · its source page states the value and the date (its publisher's feed entry for the page)  

> GPT-4 deepens the conversation on Duolingo

What https://openai.com/index/duolingo says, word for word.

## Sources

- https://openai.com/index/duolingo (primary, OpenAI, published 2023-03-14)

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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.
