Changelog

API: cross-resource field-naming sweep

Several same-concept-different-name fields are renamed to one consistent spelling and type across the voice-agents wire. Every change is served in its pre-2026-06-28 shape to a caller that pins an earlier Speechify-Version; the official SDKs pin their build date automatically.

Voice gender notSpecified → not_specified

API version pinning with `Speechify-Version`

The API now supports date-based version pinning with the Speechify-Version request header.

  • Current version: 2026-06-25
  • Header format: YYYY-MM-DD
  • Resolution order: request header, workspace default, oldest supported version
  • Migration path: official SDKs pin their build-date version automatically; raw HTTP callers should send Speechify-Version explicitly.

Voice Agents is now publicly available

Voice Agents is now available to all Speechify accounts, in both the console and the documentation. You can build, configure, test, and deploy phone and web voice agents.

Console

  • The Voice Agents product now appears in the product switcher for every account.
  • The agent flow editor for designing multi-step conversations is open to all customers.