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> For a complete documentation index, see https://docs.vapi.ai/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.vapi.ai/_mcp/server.

## What's New

1. **Configure 16 text normalization processors in [FormatPlan](https://api.vapi.ai/api#:~:text=FormatPlan)**: You can now control how text is transcribed and spoken for currency, dates, etc. by setting the `formattersEnabled` array in `Assistant.voice.chunkPlan.formatPlan` (not specifying `formattersEnabled` defaults to all formatters being enabled). See all available formatters in the [FormatPlan.formattersEnabled reference](https://api.vapi.ai/api#:~:text=FormatPlan).

2. **Deepgram [Keyterm Prompting](https://developers.deepgram.com/docs/keyterm)**: The `keyterm` array in [DeepgramTranscriber](https://api.vapi.ai/api#:~:text=DeepgramTranscriber) implements Deepgram's [Keyterm Prompting](https://developers.deepgram.com/docs/keyterm) technology, boosting recall for domain-specific terminology. Compared to the existing `keywords` field:

| Feature      | `keywords`         | `keyterm`      |
| ------------ | ------------------ | -------------- |
| Recall Boost | 15-20%             | Up to 90%      |
| Format       | Word:Weight        | Raw phrases    |
| Use Case     | General vocabulary | Critical terms |

You should reserve `keyterm` for compliance-sensitive terms like medical codes while using `keywords` for proper nouns / brand names.

3. **Subscription usage tracking improvements**: The `minutesUsedNextResetAt` timestamp now appears in all subscription tiers (not just enterprise), exposed at `subscription.minutesUsedNextResetAt` for predictable billing cycle integration. Combine with existing `minutesUsed` and `minutesIncluded` metrics to build custom usage dashboards, regardless of subscription tier.

4. **Neuphonic voice synthesis**: You can now configure Neuphonic as a voice provider with `Assistant.voice[provider="neuphonic"]`. Handle appropriate errors with `pipeline-error-neuphonic-voice-failed`. Test latency thresholds as Neuphonic requires 200ms additional processing time compared to ElevenLabs.

![Neuphonic Voice Synthesis](/_fern-img/eb23d8cccdd977a5319a8b77e1b84ed485cb969ca9fbe0a7b96ea2b07e7688af.webp)

5. **Support for pre-transfer announcements in [ClientInboundMessageTransfer](https://api.vapi.ai/api#:~:text=ClientInboundMessageTransfer)**: The `content` field in `ClientInboundMessageTransfer` now supports pre-transfer announcements ("Connecting you to billing...") before SIP/number routing. Implement via WebSocket messages using type: "transfer" with destination object.

### Deprecation Notice

> **Warning**
>
> **OrgWithOrgUser** is now deprecated, and impacts endpoints returning organization-user composites. This has been replaced with separate [`Org`](https://api.vapi.ai/api#:~:text=Org) and [`User`](https://api.vapi.ai/api#:~:text=User) schemas for better clarity and consistency.