Cartesia

Cartesia provides a streaming text‑to‑speech API that generates natural, emotionally nuanced speech with sub‑100 ms latency across 40+ languages, including Indian dialects. The platform offers instant voice cloning, a REST API with SDKs for major programming languages, and enterprise‑grade security and compliance (SOC 2 Type II, HIPAA, PCI) for high‑volume deployments.

Updated 2 months ago

Funding

Funding not disclosed

Funding rounds are not available yet.

Founders

Founder details are not available yet.

Product

Problem

Traditional text‑to‑speech services produce flat, delayed audio that lacks emotional nuance and cannot keep up with real‑time conversational workloads, limiting the user experience for voice‑driven applications.

Solution

Cartesia delivers a streaming TTS API that generates natural‑sounding speech with context‑aware emotional cues such as laughter, excitement, or sadness, while maintaining ultra‑low latency (sub‑100 ms). The platform supports over 40 native languages, including multiple Indian dialects, and intelligently expands acronyms and initialisms. Developers can integrate the service via a concise REST API and pre‑built SDKs for major programming languages, accelerating prototype to production. Voice cloning lets teams create custom voice personas in as little as ten seconds, with optional fine‑tuned Pro clones for brand‑specific tones. All endpoints are secured and compliant with SOC 2 Type II, HIPAA, and PCI standards, providing enterprise‑grade reliability for high‑volume deployments.

Target Audience

The service targets developers and product teams building conversational agents for customer support, gaming, healthcare, finance, and other voice‑first applications that require low‑latency, emotionally rich speech output.

Features

Real‑time streaming synthesis with latency under 100 ms, powered by state‑space neural models.
AI‑driven emotional rendering (laughter, excitement, sadness) and context‑sensitive handling of acronyms and initialisms.
Library of 40+ native voices covering 95 % of global language usage, including nine Indian languages.
Instant voice cloning (10‑second generation) and Pro voice cloning for fine‑tuned, brand‑specific voices.
Fully documented REST API plus SDKs for Python, JavaScript, Java, and Go to speed integration.
Enterprise‑grade security and compliance (SOC 2 Type II, HIPAA, PCI) with role‑based access controls.
Scalable cloud infrastructure with built‑in analytics and monitoring dashboards.