Overview

Cartesia delivers low latency text-to-speech that is made for real-time voice applications. With Bolna's Cartesia integration, you can build voice agents with near-instantaneous speech synthesis, creating natural, flowing conversations without visible delays.

Cartesia's TTS achieves sub-300ms latency from text input to audio output, which is critical for maintaining natural conversation rhythm where even small delays can feel awkward to callers.

Features & Use Cases

Ultra-Fast Responses (Under 300ms)
Cartesia generates speech in less than 300 milliseconds. This removes awkward pauses and keeps conversations flowing naturally.

Real-Time Audio Streaming
Audio plays as it is being created. This lets voice agents start talking even before the whole sentence is ready, making interactions feel instant and real.

Natural, Human-Like Voices
Even though it's incredibly fast, Cartesia sounds like a real person with natural tone, emotion, and rhythm.

Lots of Voice Choices
Pick from a wide variety of voices, accents, and styles to perfectly match your brand.

Built for Phone Calls
Optimized specifically for real-time voice applications like phone calls, ensuring smooth and delay-free conversations.

Use Case: Fast-Paced Customer Support
Perfect for busy customer service calls where quick, clear answers keep customers happy and help resolve issues faster.

Use Case: Financial Services & Trading
Ideal for high stakes trading or banking support where every second matters and delays cause frustration.

Use Case: Urgent Response Lines
Great for emergency or urgent situations where fast communication is needed to deliver critical information immediately.