# DeepL Voice API

**Canonical:** https://apis.io/apis/deepl/deepl-voice-api/  
**Provider:** DeepL — https://apis.io/providers/deepl/  
**Base URL:** https://api.deepl.com/v3  
**Documentation:** https://developers.deepl.com/api-reference/voice

DeepL Voice API is one of 7 APIs that [DeepL](https://apis.io/providers/deepl/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification and an AsyncAPI event-driven specification. Tagged areas include Real-Time, Speech-to-Text, Streaming, Transcription, and Translation. The published artifact set on APIs.io includes API documentation, an API reference, an OpenAPI specification, and an AsyncAPI specification.

The DeepL Voice API provides real-time speech transcription and translation. A POST to /v3/voice/realtime issues an ephemeral token and WebSocket streaming URL; clients then open a WSS channel to stream source audio chunks and receive incremental source-language transcriptions, translated transcriptions, and (closed beta) synthesized translated audio. There is no documented webhook callback URL on the REST APIs; document translation remains polling-based.

## Machine-readable artifacts (6)

- **Documentation** — https://developers.deepl.com/api-reference/voice
- **Reference** — https://developers.deepl.com/api-reference/voice/websocket-streaming
- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/deepl/refs/heads/main/openapi/deepl-voice-api-openapi.yml
- **AsyncAPI** — https://raw.githubusercontent.com/api-evangelist/deepl/refs/heads/main/asyncapi/deepl-voice-api-asyncapi.yml
- **AsyncAPI** — https://developers.deepl.com/api-reference/voice.asyncapi.yaml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/deepl/refs/heads/main/apis.yml

## Other DeepL APIs (6)

- [DeepL Documents API](https://apis.io/apis/deepl/deepl-documents-api/)
- [DeepL Glossaries API](https://apis.io/apis/deepl/deepl-glossaries-api/)
- [DeepL Languages API](https://apis.io/apis/deepl/deepl-languages-api/)
- [DeepL Translate API](https://apis.io/apis/deepl/deepl-translate-api/)
- [DeepL Usage API](https://apis.io/apis/deepl/deepl-usage-api/)
- [DeepL Write API](https://apis.io/apis/deepl/deepl-write-api/)

## Tags

Real-Time, Speech-to-Text, Streaming, Transcription, Translation, Voice, WebSocket

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/deepl/deepl-voice-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/deepl/.