# clm_41628505D622

subject: OpenAI (/record/openai.md)  
predicate: feature_added  
value: SIP phone calling support  
valid_from: 2025-08-28  
valid_to: null  
published: 2025-08-28  
recorded: 2026-11-03  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-04  
cite: AsOf. "OpenAI feature added: SIP phone calling support", as of 2025-08-28. Claim clm_41628505D622, https://asof.is/claim/clm_41628505D622, accessed 2026-11-08. Source: https://openai.com/index/introducing-gpt-realtime.  
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 more advanced speech-to-speech model and new API capabilities including MCP server support, image input, and SIP phone calling support

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

## Sources

- https://openai.com/index/introducing-gpt-realtime (primary, OpenAI, published 2025-08-28)

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