Realtime API
Bidirectional audio, fast responses, and one integration path from prototype to production.
About us
Karasu Labs helps product and engineering teams launch natural, low-latency voice agents with predictable pricing and production ready APIs.
What we build
From streaming audio and turn-taking to transcription and speech synthesis, our platform keeps the core path simple so your team can focus on product logic.
Bidirectional audio, fast responses, and one integration path from prototype to production.
Transparent per-minute billing that keeps finance and engineering aligned as volume grows.
Our values
We keep the platform opinionated where it helps, flexible where it matters, and focused on outcomes for end users.
We optimize for fast iteration so teams can launch voice experiences in days, not quarters.
Pricing should be predictable and explainable. One minute should mean one minute on your bill.
Realtime systems need resilient defaults. We build for stability under real call volume.
Get in touch
Tell us your use case and we will help you evaluate integration, rollout, and the best plan for your volume.