Meet Cartesia Sonic 3.6
Cartesia Sonic 3.6 is Cartesia's text-to-speech model. It is known for natural pacing and a large voice library, which makes it a good fit for narrators and characters that need a specific sound.
Voiceovers are generated through the Advibly MCP server by naming a Cartesia voice id.
Available in Advibly
Settings and estimated costs from Advibly's live model configuration.
- Inputs
- Script text
- Model
- Cartesia sonic-3.6
- Voices
- Cartesia's voice library, by voice id
- Estimated cost
- $0.03 / 1,000 charactersOne credit costs $1. The range spans the cheapest and the most expensive settings this model offers; the composer shows the exact amount before you generate.0.03 credits / 1,000 characters
When to use it
Use Sonic when you need a particular voice rather than a good default.
- Narrators for explainer videos
- Distinct character voices
- Consistent brand voice across videos
Things to keep in mind
Billing is by script length.
Available through the MCP server rather than the web composer.
Get more from your prompt
- 1.Audition two or three voices on one line before voicing the full script.
- 2.Spell unusual names phonetically.
- 3.Break long scripts into paragraphs at natural pauses.
- 4.Keep the same voice id across a series.
Common questions
What is Cartesia Sonic 3.6 best used for?
Cartesia Sonic 3.6 is particularly useful for narrators for explainer videos, distinct character voices, consistent brand voice across videos. The right choice still depends on your input assets, delivery format, turnaround and credit budget.
What inputs does Cartesia Sonic 3.6 support in Advibly?
Cartesia Sonic 3.6 works from script text. Advibly only shows the controls a model actually supports once it is selected, so you are never offered a combination it cannot render.
How many credits does Cartesia Sonic 3.6 use?
The current estimate is 0.03 credits / 1,000 characters ($0.03 / 1,000 characters, at $1 per credit). The exact amount follows the options you pick, and Advibly shows it on the generate button before anything is charged.
Reviewed September 29, 2026 against Advibly's model configuration and Cartesia's published material.
Developer source
