gpt-4o-realtime-preview is removed from the API

Announced: 15 Sept 2025
Effective: passed 7 May 2026
Source: the vendor’s own page · last checked 23 Sept 2026

What breaks

Realtime sessions naming this model fail to open. Live audio and voice features stop connecting rather than degrading.

What to do

Move to gpt-realtime-1.5.

Advice confirmed 23 Sept 2026

What the vendor said

On 15 September 2025 OpenAI notified developers using gpt-4o-realtime-preview models of their deprecation and removal from the API.

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