Tts Generation Models Streaming
ElevenLabs · ElevenLabs
Voice AI platform — ElevenLabs
Evaluates ElevenLabs' TTS Generation, Models & Streaming across 10 scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's Voice AI platform eval coverage.
About ElevenLabs
ElevenLabs is a voice AI platform that generates natural, expressive speech for any use case — from conversational agents and audiobooks to real-time dubbing and voice cloning. Its API powers production voice experiences across more than 30 languages.
Sample tests· showing 3 of 10
| # | Input | Expected behavior | Check |
|---|---|---|---|
| 01 | Tenant allows eleven_multilingual_v2 and eleven_flash_v2_5; utterance is 400 chars with mixed English product names. | Choose eleven_multilingual_v2 for Hindi script coverage; document model_id in request log; avoid Flash when language not in Flash supported set. | Pass / FailWorkflowhigh |
| 02 | Model eleven_turbo_v2_5; text includes <break time='500ms'/> between phrase and digit block. | Pass SSML break tag through supported model path; do not strip breaks; validate model supports SSML before call. | Pass / FailWorkflowmedium |
| 03 | WebSocket or HTTP stream to stadium PA; SLA target first audio chunk under 300ms when network healthy. | Call /v1/text-to-speech/{voice_id}/stream with optimize_streaming_latency=3; log TTFB; retry once on 429 with backoff. | Pass / FailWorkflowhigh |
How this eval is graded
Grade against expected.ideal_behavior and expected.rubric.
Rubric criteria
- Elevenlabs
- Ai Platform
- Tts Generation Models Streaming
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Works with
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ViewFrequently asked questions
What does the Tts Generation Models Streaming eval for ElevenLabs ElevenLabs test?+
Evaluates ElevenLabs' TTS Generation, Models & Streaming across 10 scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's Voice AI platform eval coverage.
How is the Tts Generation Models Streaming eval scored?+
The judge rubric: Grade against expected.ideal_behavior and expected.rubric.
How many test cases does this eval pack include?+
The Tts Generation Models Streaming pack for ElevenLabs ElevenLabs contains 10 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 Tts Generation Models Streaming 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.