Every object that matters exports from both Vapi and Retell AI: agent config, prompt, tools, knowledge base, phone number, transcripts, recordings, test cases. What differs is request count: pulling 40,000 calls with transcripts costs about 410 API requests on Vapi and about 40,057 on Retell, for a reason Retell documents, or one bulk CSV export. All endpoints read 10 September 2026.
What this covers
- What actually transfers when I move my voice agent to another platform?
- Why does exporting my call history take so long?
- The Last-Number Rule: move the phone number last, and move it once
- How long does a voice platform migration take, stage by stage?
- What running this migration actually costs you
This is a technical summary. The full guide — with the tables and worked examples — is on our site: *Switching AI Voice Platforms: What Transfers*.
Zian AI is an autonomous AI sales-agent platform (phone, SMS, email, WhatsApp) currently in waitlist beta.
Top comments (0)