Cartesia

Speech-to-text, text-to-speech and managed voice agents in one API for live conversation.

Infrastructure by Cartesia

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Chalk Labs

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pip install cartesia

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About

Cartesia offers Ink for speech-to-text, Sonic for text-to-speech and Managed Agents for building voice agents on those models. The models run on state space model architectures for low latency. The same models and agents can be deployed in the cloud, on-premise or on-device.

Use cases: voice-agents, audio-video

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Fact sheet

Category: Voice · speech models
Self-host: Yescartesia.ai
Protocols: rest, websocketdocs.cartesia.ai

Plans

Free	$0	20K credits/month for TTS and STT, $1 prepaid agent dollars/month, agent calls $0.06/min
Pro	$5/month	100K credits/month, $5 prepaid agent dollars/month, commercial use license, instant voice cloning
Startup	$49/month	1.25M credits/month, $49 prepaid agent dollars/month, professional voice cloning, organizations
Scale	$299/month	8M credits/month, $299 prepaid agent dollars/month, priority support, high concurrency limits
Enterprise	Contact sales	custom credits and agent usage, DPAs and BAAs, SSO, security questionnaires

From the vendor's pricing page, read Oct 24, 2026.

Facts read from the vendor's own pages by claude-haiku-5-5 on Oct 24, 2026; a fact is shown only with the page it came from.

Details

Packages: pypi cartesianpm @cartesia/cartesia-js
License: License unknown
Website: www.cartesia.ai
Docs: docs.cartesia.ai
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Package page Website Pricing page Docs

Done for you

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Chalk Labs scopes, builds and runs agents for your team: the task audit, the eval harness, the integrations and the weekly ops report. Fixed scope, priced before we start.

See how we build AI agents →Read the case studies

Chalk Labs is a two-founder AI and growth studio. We build AI agents, CRMs and MVPs for Web3 and AI companies, and have shipped 50+ product and token launches.

launches shipped: 50+; launches shipped
media placements: 500+; media placements
founders on every account: 2; founders on every account

Press we've placed: Forbes · CoinDesk · Decrypt · Cointelegraph · The Block

Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

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Cite this page

Cartesia. Agent Mart. https://agentmart.dev/infrastructure/cartesia (last updated 2026-10-24)