ServiceNow Releases Apriel Voice 27B Preview: Open Model for Speech, Reasoning, and Tool Use

·2026.10.30 01:53

Key point

The open-source model uses a Gemma 4 backbone and Whisper encoder to handle speech, reasoning, and tool calls, outperforming other open-source systems on voice benchmarks.

Details

  • ServiceNow released Apriel Voice 27B Preview, an open model combining speech understanding, reasoning, and tool use via a shared Gemma 4 backbone.
  • The model achieves 51.27% EVA-A, 74.13% EVA-X, and 65.51% τ-Voice task success with 1.91 seconds mean response latency.
  • It supports transcription, speech translation, and spoken instruction following, with a word error rate of 2.23% on LibriSpeech test-clean.
  • The architecture connects a Whisper large-v3-turbo speech encoder to the Gemma 4 26B-A4B backbone through a learned projector.
  • Real-time voice interaction is managed by the application and serving stack, as the checkpoint generates text and tool calls rather than native full-duplex speech.
  • Long audio recordings up to 30 minutes are supported, with performance potentially declining for longer durations.

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