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// Voice & music

Cartesia

Low-latency TTS and STT APIs for real-time voice agents.

Closed / commercial Maintained Dual-use For everyone

Official site ↗ Compare

IN ONE PARAGRAPH

Cartesia is low-latency TTS and STT APIs for real-time voice agents.

Good for: Anyone who wants AI to voice & music without setting anything up.

Not for: teams that require open source or self-hosting.

01How to start

  1. 1Open the official site or app store page (link above) and sign up.
  2. 2Available on: API.
  3. 3Pricing: Freemium — start with the free tier if there is one.

02Alternatives & comparison

Compare side by side →
OpenAI Whisper OpenAI open-source robust speech recognition model. ★ 111k VoiceStudio An open-source, fully local ElevenLabs alternative: voice cloning, voice design, video dubbing, dictation, transcription and audiobooks (646 languages per the README), default engine built on k2-fsa/OmniVoice; exposes a local API and MCP for agents; one-command desktop install on macOS / Linux. AGPL-3.0 ★ 81k GPT-SoVITS Few-shot voice cloning and TTS. ★ 63k voicebox Open-source AI voice studio for cloning, dictation and creation. +272★/day VibeVoice Microsoft's open-source frontier voice AI. ★ 55k

03Related

Versions, why it is listed, for AI to read

Popularity evidence (third-party snapshots)

  • Monthly visits：1.2M (+32.6% MoM) · AlphaMoat 2026-09

For AI agents

Data updated: AI software & hot ranks · Software profiles & needs(UTC+8)