- The following models are being deprecated and replaced with newer versions:
- OpenAI models:
gpt-4.1-nano→ replaced withgpt-5.6-luna
- On 10/20/2026, existing configurations will be automatically migrated to the replacement model.
- OpenAI models:
Detailed Deprecation Guide
GPT-4.1 nano model replacement (10/20/2026)
On 10/20/2026, Retell replaces GPT-4.1 nano (gpt-4.1-nano) with gpt-5.6-luna. Existing configurations will be automatically migrated.