Vessel UI · 18 components · light + dark

Bringing voice to life

A clean, editorial design system built on warm cream and stone tones. Pill shapes, serif display type, and gradient voice orbs.

Colour tokens

background
surface
surface-strong
accent
orange
blue
foreground
muted
border

Typography

Bringing technology
to life

Two platforms, one
research foundation

Section heading — Inter regular

Sub-heading at 24px

Body large — 18px / 1.6 line-height. The default reading size for this system.

Body base — 16px. Used for secondary content, card descriptions, and UI labels.

Body small — 14px. Used for metadata, timestamps, and supporting details.

Buttons

Filter tabs

Product switcher (dot indicator variant — orange, green, blue)

Feature category tabs (flat strip, active = accent fill)

Voice orbs

Signature circular gradient avatars — six colour palettes, three sizes.

Aria
Playful and engaging
for gaming content.
Characters
Marco
Expressive voices
for audiobooks.
Narration
Zara
Natural voices perfect
for informal scenarios.
Conversational
Luca
Energetic tone
for social content.
Social Media
Nova
Warm narration for
documentary work.
Narration

Audio player

0:00 / 2:00
0:00 / 1:30

Badges

Default Accent New API Live Coming soon
Default large Accent large Beta

Cards

Generate with AI

Transform your text into studio-quality voice in seconds with state-of-the-art AI.

Live Learn more →

"Shipping 3× faster since we integrated the API last quarter."

Head of Product · Trestle
Read story →
Studio Dashboard
Manage voices, projects, and exports from one place.

Navigation

Form controls

Voice enhancement
Background removal
Auto-publish

Sliders

Stability 65
Similarity boost 80
Style exaggeration 20

Progress

Generating audio… 74%
Processing…
Storage used 38%

Accordion

Over 30 languages including English, Spanish, French, German, Japanese, Chinese, Portuguese, Arabic, and more. New languages are added regularly.
Upload a short audio sample — as little as one minute — and the system learns the voice characteristics including tone, pacing, and accent to produce a faithful clone.
Free plans include 10,000 characters per month with access to all standard voices. Upgrade anytime for higher limits, custom voices, and commercial licensing.
Yes — a fully documented REST API is available on all paid plans. SDKs are available for Python, JavaScript, and more. Real-time streaming is supported via WebSockets.

Avatars & chips

A
M
Z
L
A
Aria
Characters
M
Marco
Narration

Skeleton loaders

Typing indicator

Agent is generating a response…

Logo strip

Trusted by leading developers and enterprises

ACME VANTA TRESTLE LUMINAR BASTION FIELDCO NORWOOD SOLACE

Toasts

✓
Voice generated
Download ready in your library.
◆
Processing audio
This may take a few seconds.

Modal

Voice chat