- The following speech-to-speech models are being deprecated and replaced with newer versions:
- OpenAI Realtime models:
gpt-realtime→ replaced withgpt-realtime-2.1gpt-realtime-mini→ replaced withgpt-realtime-2.1-mini
- On 01/19/2027, existing configurations will be automatically migrated to the replacement model.
- OpenAI Realtime models:
Detailed Deprecation Guide
GPT Realtime model replacements
On 01/19/2027, Retell replaces GPT Realtime and GPT Realtime mini with gpt-realtime-2.1 and gpt-realtime-2.1-mini. Existing configurations will be automatically migrated.

