I'm using the v1/text-to-speech/:voice_id endpoint. Is the voice_settings.speed parameter supported

[olive hollow]

AI-generated Answer for gregarous.

Yes. voice_settings.speed is supported for all voices and models—including v3—when calling POST /v1/text-to-speech/:voice_id. Valid values are 0.7–1.2 (default 1.0). (help.elevenlabs.io)

Note: v3 can also adjust pacing via audio tags, but the voice_settings.speed parameter remains supported. (elevenlabs.io)

Sources:
Can I change the pace of the voice? – ElevenLabs
Best practices | ElevenLabs Documentation

[sleek bear]

Then why is the speed slider not available in the web app when v3 is chosen?

[olive hollow]

AI-generated Answer for gregarous.

Per our docs, speed control is available for all models—including v3—and it’s adjusted in the Voice settings for the selected voice (not in the model selector). Open the voice’s settings panel in the web app to access the Speed slider. (help.elevenlabs.io)

Sources:
Can I change the pace of the voice? – ElevenLabs

[sleek bear]

In the web app, when I have the v2 model selected, I see the speed slider. When I change the model to v3, it disappears. You understand why I'm hesitant to believe you when you say it's supported for v3?

[olive hollow]

AI-generated Answer for gregarous.

I get why you’re skeptical. Here’s what the official docs say:

• Speed control is supported across all voices and models, with a valid range of 0.7–1.2. This includes use via the API. (help.elevenlabs.io)
• The API exposes speed as part of voice settings: you can read it (GET /v1/voices/:voice_id/settings) and set it (POST /v1/voices/:voice_id/settings/edit). The schema explicitly includes "speed" (default 1.0). (elevenlabs.io)
• When generating speech, you can override stored voice settings per request via voice_settings while using model_id=eleven_v3. (elevenlabs.io)
• For v3 specifically, the prompting guide emphasizes controlling pacing with inline audio tags (e.g., [slowly], [quickly]), which explains why the v3 guidance leans toward tags rather than a UI slider. (elevenlabs.io)

The Help Center doesn’t document the web app removing the slider when v3 is selected; it only states speed is available for all models and via API. Practically: if you need numeric control on v3 today, set voice_settings.speed in your API request (0.7–1.2), or use the v3 audio tags in your text. (help.elevenlabs.io)

Sources:
Can I change the pace of the voice? – ElevenLabs
Get voice settings | ElevenLabs Documentation
Create speech | ElevenLabs Documentation
Prompting Eleven v3 (alpha) | ElevenLabs Documentation
Can I change the pace of the voice? – ElevenLabs

[sleek bear]

You reference this page: https://help.elevenlabs.io/hc/en-us/articles/13416271012497-Can-I-change-the-pace-of-the-voice. Was that written before v3 even existed?