# Cartesia — Introducing Line: The Modern Voice Agent Development Platform

- Company: Cartesia (cartesia.ai)
- Announced: 2025-08-19
- Category: product-launch
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://www.cartesia.ai/blog/introducing-line-for-voice-agents
- Record: https://forck.live/items/8015-introducing-line-the-modern-voice-agent-development-platform
- Subject: Sonic / Ink
- Models affected: Sonic, Ink

Cartesia introduced Line, a code-first voice agent development platform. Line is available to all developers, with subscription tiers receiving prepaid credits. It integrates Cartesia's Sonic text-to-speech and Ink speech-to-text models.

## Evidence

Verbatim from https://www.cartesia.ai/blog/introducing-line-for-voice-agents:

> Line is the modern voice agent development platform, making it easy for developers and businesses everywhere to build best-in-class voice agents.

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