retell-sdk 6.2.21

v6.2.21

on Python PyPI

6.2.21 (2026-11-15)

Highlights

• Add phone number search with filters and pagination.
• Add opt_out_contact_sync to stop contact writes from calls and chats.
• Make opt_out_contact_sync required on CRM config objects.
• Add gemini-4-hydrogen LLM model option.
• Add SMS and spam status fields to phone number responses.
• Add interrupted flag to agent utterance metadata.