Does Lyria 3.5 audio carry a SynthID watermark?
Yes: Google's Gemini API music docs say Lyria audio carries a SynthID watermark. The Sume docs I read do not describe watermarking either way.
Yes, per the Gemini API music generation docs read on 2026-10-04: audio from Lyria carries a SynthID watermark. The Sume Music Router docs I read do not mention watermarking, so I cannot say what applies to audio served from media.sume.com.
What is documented
| Item | Detail |
|---|---|
| Watermark | SynthID |
| Default format | MP3 |
| WAV | response_format with type audio |
| Image input | Up to 10 images plus text |
| Editing | Single-turn, no iterative editing |
| Artist voices | Prompts that ask for an artist's voice are blocked |
What to do with this
- Disclose AI music where a platform requires it.
- Do not strip or re-encode away provenance in a way a platform forbids.
- Ask in writing if your use depends on the watermark surviving.
Through Sume
The router returns one audio artifact, typically audio/mpeg, and job.request.routed_model names the engine that ran. Read it on the job to know whether Lyria produced the track.
curl https://api.sume.com/v1/jobs/JOB_ID/result \
-H "Authorization: Bearer $SUME_API_KEY"Gap
Whether a watermark persists through Sume's delivery pipeline is not something I read; test it with the detector you rely on.
Sources
Related posts
More in Models
- Eleven v4 stacked tags: direct emotion without them
ElevenLabs v4 adds stackable expression tags and 10-second cloning. Sume's docs list no clone route; here is how to direct a voice via tts_create.
- eleven_v4 vs eleven_v4_turbo: model IDs, endpoints, which to pick
ElevenLabs lists eleven_v4 for expressive speech with cloning in 90+ languages and eleven_v4_turbo at about 100 ms median latency. Which fits a video pipeline.
- ElevenLabs languages: Flash v2.5 has 32, Multilingual v2 29, v4 90+
ElevenLabs lists 32 languages for Flash v2.5, 29 for Multilingual v2 and 90+ for v4 and v4 Turbo. Check your markets against the model, then log it per job.
- ElevenLabs Music stems: Creator 2 and 4, Pro 6, and the Sume route
ElevenLabs lists 2 and 4 stems on Creator and up to 6 on Pro. When a video editor needs stems, and when a Sume duck_db setting does the job.
Written by Sume