The production layer for AI voice.
The voice quality you expect - every word, line, and language.
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Run your first line
Trusted by teams shipping voice at scale.
TTS
Turns text into speech. One model. One pass. No validation. No retry. Ship whatever the engine returns.
Onepin
Plans. Validates. Ships. An agent. Picks the model. Scores the results. Fixes until it clears your bar.
Reduce errors by 00%. The way you Claude Code is to a comiler, Onepin is to TTS.
Three steps to your voice.
The difference is what you can do with it.
01
Add nodes
Drop in voice, emotion, pacing, and style nodes from the library.
02
Connect
Wire nodes together to shape exactly the voice you want.
03
Run workflow
Render the pipeline and export production-ready audio in seconds.
Watch full demo
Used across industries.
"Let's go, team. The final boss won't wait."
Generate dynamic NPC voices, in-game cinematics, and localized dialogue with consistent character identity.
"He turned slowly. The room had gone still."
Produce voiceovers, ADR replacements, and multilingual dubs while preserving the original performance.
"In a quiet town, nothing was ever quiet for long."
Narrate long-form content with natural pacing and emotional range — at a fraction of studio cost.
"The future of voice, here."
Scale ad creative across regions and demographics with brand-safe voice variations on demand.
"Today, we explore the basics of calculus."
Create clear, engaging instructional voices for courses and tutorials in any language.
Built by
Soohyun Bae
Onepin Founder & CEO
Ex-Google
Pricing that scales with your team.
Starter
Free
For early experiments and prototypes.
1 pipeline
50,000 audios / month
5 languages
2 providers
Community support
Pro
$99
/mo
For teams shipping in production.
Unlimited pipelines
50,000 audios / month
All 40+ languages
All 100+ providers
Validators • CI gating
Priority support
Enterprise
Custom
For teams with custom needs.
Everything in Pro
Dedicated infrastructure
SSO • SOC 2 • DPA
Custom validators
Native-speaker review pool
Solutions engineering
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