LangChain / LangGraph + LangSmith
Building custom, stateful agents in code and tracing, evaluating and deploying them.
verified 2026-11-02
Agent frameworks & automation
Cartesia Managed Agents
Cartesia's hosted voice-agent platform, launched Oct 29, 2026. It pairs Cartesia's own Ink 2 speech-to-text and Sonic 3.6 voice with an LLM you choose, plus telephony, knowledge bases and tool calls. Build in the playground or via API.
Best for: Shipping phone and voice agents (support lines, receptionists) where natural, fast speech matters.
Pricing
| Free tier | Yes. Free plan includes $1/mo of agent usage (about 33 minutes) and 20K speech credits. |
|---|---|
| Paid plans | Agent calls $0.03/min (launch price, listed down from $0.06), +$0.014/min on a Cartesia phone number; LLM usage billed separately. Plans: Pro $5/mo, Startup $49/mo, Scale $299/mo, each including that amount in prepaid agent usage. Enterprise custom. |
| Maker | Cartesia |
| Source | https://www.cartesia.ai/pricing |
| Last verified |
Pros
- Speech models and agent harness tuned together
- Low per-minute rate; bring your own Twilio or SIP to skip the telephony fee
- Evaluations free for a limited time
Cons
- LLM tokens cost extra on top of the per-minute rate
- $0.03/min is a discounted rate that may change
Notable facts
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FAQ
Is Cartesia Managed Agents free?
Yes. Free plan includes $1/mo of agent usage (about 33 minutes) and 20K speech credits.
How much does Cartesia Managed Agents cost?
Agent calls $0.03/min (launch price, listed down from $0.06), +$0.014/min on a Cartesia phone number; LLM usage billed separately. Plans: Pro $5/mo, Startup $49/mo, Scale $299/mo, each including that amount in prepaid agent usage. Enterprise custom.
What is Cartesia Managed Agents best for?
Shipping phone and voice agents (support lines, receptionists) where natural, fast speech matters.
Who makes Cartesia Managed Agents?
Cartesia Managed Agents is made by Cartesia.
Spotted something out of date? Tell us and we'll re-verify. Facts on this page come only from the linked sources.