# Cartesia: what AI models say (September 2026)

Source: Memetik Index, https://www.memetik.ai/vendors/cartesia
Website: https://www.cartesia.ai

Cartesia was named in 8 of 50 AI answers across 1 category. Best position: AI voice generation, 16% answer share, ranked #12, named first in 0%.

## What Cartesia is

Cartesia provides speech-to-text, text-to-speech, voice-cloning and voice-agent products for teams building voice agents and voice experiences. Its users include financial-services teams.

Its text-to-speech API turns text into audio in real time, while its speech-to-text model provides streaming transcription. A voice-cloning tool creates a clone from a three-second audio clip. Its managed-agents platform builds and deploys enterprise voice agents. Models and agents can run in cloud, on-premise or on-device environments.

(From Cartesia's own website, read 2026-09-02.)

## By category

| Category | Rank | Answer share | Named first | Models |
|---|---|---|---|---|
| AI voice generation (https://www.memetik.ai/index/ai-voice) | #12 of 17 | 16% | 0% | GPT-5.6 Sol, ChatGPT, Claude Opus 5, Claude Fable 5, Gemini 3.5 Flash, Sonar Reasoning Pro |

## What the models said

> "Choose Cartesia if you are a developer building high-speed conversational agents or phone bots where speed is the number one priority."
> — Gemini 3.5 Flash, AI voice generation

> "Cartesia, PlayHT, Inworld Cartesia’s Sonic models are noted for extremely low latency designed for real‑time agents."
> — Sonar Reasoning Pro, AI voice generation

> "The consensus across them is that ElevenLabs leads on quality, Cartesia on speed, and Azure/Google on scale."
> — Claude Opus 5, AI voice generation

> "Pick Cartesia when minimizing response delay and streaming speech are the central requirements."
> — GPT-5.6 Sol, AI voice generation