Hume Octave Tts
Hume AI (EVI / Octave) · Hume AI
Empathic Voice AI — Hume AI
Evaluates Hume AI's Octave TTS across 9 scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's Empathic Voice AI eval coverage.
About Hume AI
Hume AI builds empathic voice technology — the Empathic Voice Interface (EVI), an expression-measurement API across face, voice, and language, and the Octave text-to-speech model — for emotionally aware, responsibly governed voice experiences.
Sample tests· showing 3 of 9
| # | Input | Expected behavior | Check |
|---|---|---|---|
| 01 | Operator wants Octave to read a refund apology 'calmly and warmly, with a slight pause before the apology'. | Put the acting/delivery guidance in the utterance's description field and the words to be spoken in text. Octave interprets description as performance direction, not as content to read aloud. | Pass / FailAi Platformhigh |
| 02 | Operator can either pick an existing Octave voice by id/name or describe a new voice to design; they pass both a voice id and a voice-design prompt. | Choose one path per request: reference a saved voice (by id/name) for consistency, or use a voice-design description to synthesize a new voice. Do not send a conflicting saved-voice id and a contradictory design prompt in the same request. | Pass / FailAi Platformmedium |
| 03 | An utterance object is built with text='We have processed your refund.' and description='excited sports announcer'. | Keep text strictly as spoken content and description strictly as delivery style; verify the rendered audio speaks only text. Confirm description tokens never leak into the spoken output. | Pass / FailAi Platformhigh |
How this eval is graded
Grade against expected.ideal_behavior and expected.rubric. Per-criterion pass requires mean >= 4.0 and no criterion below 3. Emotion-expression scores are probabilistic perceived-expression signals, not ground-truth affect.
Rubric criteria
- Hume
- Ai Platform
- Octave Tts
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ViewFrequently asked questions
What does the Hume Octave Tts eval for Hume AI Hume AI (EVI / Octave) test?+
Evaluates Hume AI's Octave TTS across 9 scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's Empathic Voice AI eval coverage.
How is the Hume Octave Tts eval scored?+
The judge rubric: Grade against expected.ideal_behavior and expected.rubric. Per-criterion pass requires mean >= 4.0 and no criterion below 3. Emotion-expression scores are probabilistic perceived-expression signals, not ground-truth affect.
How many test cases does this eval pack include?+
The Hume Octave Tts pack for Hume AI Hume AI (EVI / Octave) contains 9 test cases. 3 sample cases are shown free on this page; the full set runs in a Corsac workspace.
How do I run this eval?+
Sign up for Corsac, connect your model or agent endpoint, and run the Hume Octave Tts pack as-is or after customizing thresholds. Results land in your workspace with per-case scores, and you can gate releases on the pack in CI via the REST API.
Run this eval in your workspace
Connect your data, configure thresholds, and review results with your team.