# Cartesia — A Guide to Choosing Voice AI Models

- Company: Cartesia (cartesia.ai)
- Announced: 2026-06-30
- Category: not stated
- Coverage: not counted
- Announcement: no
- Group: routine
- Source: https://www.cartesia.ai/blog/choosing-voice-ai-models
- Record: https://forck.live/items/8010-a-guide-to-choosing-voice-ai-models
- Subject: Sonic / Ink

Cartesia published a guide on selecting voice AI models for enterprise voice agents, emphasizing that real-world performance depends on use-case-specific conditions such as telephony infrastructure, noise, and conversational dynamics. The guide recommends evaluating models on metrics like Time-to-Complete-Transcript (TTCT) rather than Time-to-First-Token, and highlights the importance of turn detection and interruption handling.

## Evidence

Verbatim from https://www.cartesia.ai/blog/choosing-voice-ai-models:

> If your intended use case is a conversational AI Agent that handles customer conversations over the phone, in noisy environments, you need to investigate whether the models you use are designed to handle these all-too-real scenarios.

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