Cartesia

Telephony / SIP

Conditional

Scope & source

YesConditional · 2026-09-28

Agent tools

Verified Yes

Scope & source

YesVerified Yes · 2026-09-28

Integrations / webhooks

Verified Yes

Scope & source

YesVerified Yes · 2026-09-28API / webhook

Enterprise / HIPAA path

Vendor claim

Scope & source

YesVendor claim · 2026-09-28Cartesia vendor statement; specific service/contract scope must be confirmed

Cartesia | Pricing pricing migrate from line sdk

Voice Engines

A place in your stack.

Best for

Developers choosing a streaming TTS layer
Teams that need a dated speech-model version

Watch-outs

A speech credit plan is not a complete phone-call bill.
Confirm the LLM promotion and carrier charges before budgeting managed agents.

Visit CartesiaOfficial site · no affiliate tracking

Pricing, with the fine printManaged Agents $0.06/min; Cartesia-provided-number telephony $0.014/min

Tracked component / plan: $0.06 / minute
V3.3 evidence review · Managed Agents base rate; carrier/model charges and prepaid plan balances separate

All-in call price: Unknown — Complete cost cannot be established from this reference. Product mix, LLM promotion expiry, carrier routing and other metered components prevent a universal all-in ceiling.
Pricing model: component-stack
Cheapest plan: Managed Agents base rate; carrier/model charges and prepaid plan balances separate
Free offer: Free plan: 20K speech credits and $1 agent prepayment
Evidence status: official
Last price check: 2026-09-28
Last product check: 2026-09-27

Product evidence coverage

Documented claims, not tested performance.

11 / 23 fields

Product specification

What the evidence says.

Unknown means we have not established it. It does not mean No. Compliance claims require plan and contract review.

White label

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

Client tenancy

UnknownUnknown after research

Shared organization resources and email-domain verification do not establish agency tenant isolation or branded customer domains.

Source ↗2026-09-28

Client billing

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

ISO 27001

Unknown

Not established by the evidence reviewed. This does not mean unsupported.

No verified source

BAA availability

DocumentedConditional

Enterprise plan offers DPA/BAA; covered services and executed agreement require confirmation.

Source ↗2026-09-28

SIP

DocumentedConditional

Managed numbers, imported Twilio numbers or customer SIP carrier; configuration and geographic limits apply.

Source ↗Source ↗2026-09-28

Warm transfer

UnknownUnknown after research

Generic transfer tool is documented, but this page does not establish warm briefing or cold-mode semantics. Do not infer a transfer type.

Source ↗2026-09-28

Cold transfer

UnknownUnknown after research

Generic transfer tool is documented, but this page does not establish warm briefing or cold-mode semantics. Do not infer a transfer type.

Source ↗2026-09-28

Batch calling

Unknown

Not established by the evidence reviewed. This does not mean unsupported.

No verified source

MCP tools

UnknownUnknown after research

Developer MCP supports Cartesia API operations; no current Managed Agents runtime MCP client established.

Source ↗2026-09-28

Webhooks

DocumentedVerified Yes

Cartesia calls customer HTTPS tool endpoints; response timeouts and size limits apply.

Source ↗2026-09-28

Calendar

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

CRM

UnknownUnknown after research

No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.

Source ↗Source ↗2026-09-28

Bring your carrier

DocumentedConditional

Managed numbers, imported Twilio numbers or customer SIP carrier; configuration and geographic limits apply.

Source ↗Source ↗2026-09-28

Bring your model

DocumentedConditional

Legacy self-hosted Line uses buyer provider keys; Managed Agents selects Cartesia-managed catalog.

Source ↗2026-09-28

Bring your voice

UnknownUnknown after research

Managed Agents specifies Sonic and Ink; historical partner pipeline mentions do not establish current arbitrary replacement endpoints.

Source ↗2026-09-28

HIPAA / BAA

DocumentedVendor claim

Supplier compliance statement links to Trust Center; independent report and buyer deployment not reviewed.

Source ↗2026-09-28

SOC 2

DocumentedVendor claim

Supplier compliance statement links to Trust Center; independent report and buyer deployment not reviewed.

Source ↗2026-09-28

GDPR

DocumentedVendor claim

Supplier compliance statement links to Trust Center; independent report and buyer deployment not reviewed.

Source ↗2026-09-28

Languages

DocumentedConditional

One TTS voice can synthesize supported languages; Managed Agents still uses one primary language per agent.

Source ↗2026-09-28

Voices

Unknown

Not established by the evidence reviewed. This does not mean unsupported.

No verified source

Realtime audio

Streaming speech and transcription

Source ↗2026-09-27

Voice cloning

Instant and professional cloning

Source ↗Source ↗2026-09-27

Architecture & connections

Understand the moving parts.

STT

Cartesia Ink-2

LLM

Runtime provider options not established by current research

TTS

Cartesia Sonic-3.6

TELEPHONY

Cartesia-provided numbers (Managed Agents)

Integrations

Unknown — provider details not established by reviewed evidence.

Cartesia pricing Cartesia product overview Cartesia Sonic 3.6 model documentation Cartesia trust center

Research outcomes / sources / limitations

Evidence you can inspect.

A documented feature, a supplier claim and an unanswered question are different kinds of evidence.

Buyer-relevant evidence114 / 114 applicable P0 fields researched

38 strong-source resolved · 34 unknown after research

Evidence coverage details

Strong-source resolved: 38
Vendor-claim only: 4
Conditional: 38
Other sourced outcomes: 0
Unknown after research: 34
Conflicting evidence: 0
Not applicable: 0
Not researched: 0

P1: 157 / 157 researched · Relevant P2: 27 / 27 researched.

Checked 2026-09-28. P0 means buyer-critical. Research coverage measures the work completed, not product quality, trust, or a benchmark score. A researched field can still be Unknown.

Inspect detailed evidence, sources and research gaps

September 2026 remains the historical baseline. A new research date does not mean a feature launched that day. Unknown after research and not researched are separate states.

Official documentation establishes what the supplier documents. No paid calls, independent product benchmarks or compliance audits were performed in this research pass. Coverage measures research work, never product quality.

Buyer intelligence / September 2026 baseline

The operating decision.

Price structure

Component stack

V3.3 evidence review · Managed Agents base rate; carrier/model charges and prepaid plan balances separate

component-stackVerified Yes · 2026-09-28

TTS/STT credit subscriptions and Managed Agents minute charges remain separate.

Cartesia | Pricing ↗

Human fallback

Unknown — no established fallback mode

UnknownUnknown after research · 2026-09-28

No individually verified capability establishes this selection. Conditional support and vendor claims do not satisfy Strict Must-have.

system tools ↗Cartesia | Pricing ↗Welcome to Cartesia - Cartesia Docs ↗

Documented transfer is not a staffed human service. Verify who answers, when they answer and what happens if they do not.

Try it yourself

Unknown — no independently checked public demo entry is attached.

External signals

No dated external signal in this record. Missing evidence is not a negative review.

Underlying model context: the documented stack above does not establish an exact benchmark checkpoint or its deployed settings. Public model results cannot become a Cartesia score.

Plan a Cartesia pilot See something outdated? Report a correction.Public model evidence →

Append-only price history

Every capture leaves a trace.

A new check creates a new snapshot. Deltas appear only for the same currency, unit, model and scope.

Checked datePrevious → currentDeltaEvidence

2026-09-27

No earlier capturePro $5/month

Tracked: $5 / month · Pro speech plan

First captureCartesia pricing

2026-09-28

Pro $5/monthManaged Agents $0.06/min; Cartesia-provided-number telephony $0.014/min

Tracked: $0.06 / minute · V3.3 evidence review · Managed Agents base rate; carrier/model charges and prepaid plan balances separate

Evidence improvedCartesia | Pricing

2026-09-28

Managed Agents $0.06/min; Cartesia-provided-number telephony $0.014/minManaged Agents $0.06/min; Cartesia-provided-number telephony $0.014/min

Tracked: $0.06 / minute · V3.3 evidence review · Managed Agents base rate; carrier/model charges and prepaid plan balances separate

Evidence improvedCartesia | Pricing

2026-09-28

Managed Agents $0.06/min; Cartesia-provided-number telephony $0.014/minManaged Agents $0.06/min; Cartesia-provided-number telephony $0.014/min

Tracked: $0.06 / minute · V3.3 evidence review · Managed Agents base rate; carrier/model charges and prepaid plan balances separate

Evidence improvedCartesia | Pricing pricing migrate from line sdk

New research observations preserve earlier captures. “Evidence improved” records what we learned; it does not claim the market changed on that date. September 2026 is the historical baseline.

Cost estimator

Price the actual workflow.

Complete cost cannot be established from this reference. Product mix, LLM promotion expiry, carrier routing and other metered components prevent a universal all-in ceiling. · LLM tokens after promotional coverage; telephony and evaluation usage

Carry the current source into your estimate, then enter the model, voice, carrier and fixed fees your configuration needs.

Estimate Cartesia costs

Alternatives by category

Other voice engines to inspect.

Alphabetical alternatives within the same category. An editorial starting point, not a performance ranking.

ElevenLabsVoice Engines

Teams wanting speech and agent tooling from one vendor

Fish AudioVoice Engines

Developers prototyping expressive speech

Hume AIVoice EnginesTTS + EVI API sunset · 13 Nov 2026, 05:01 UTC

Historical capability and pricing research

Murf AIVoice Engines

Builders comparing a character-metered speech layer

Evidence archive

Inspect the record.

Cartesia pricing2026-09-27reviewed

Free has 20K monthly credits and $1 agent credit. Pro costs $5/month with 100K credits and $5 agent credit; commercial use and instant cloning are listed. Managed agent calls are separately $0.06/minute plus $0.014/minute for Cartesia numbers; UI-created agent LLM use is temporarily free. Enterprise lists DPAs and BAAs.

v2-voice-cartesia-price · official · Captured 2026-09-27T02:53:32Z

Cartesia product overview2026-09-27reviewed

Cartesia provides Sonic streaming text-to-speech, Ink real-time transcription, voice cloning and Managed Agents. Managed Agents combines Ink, a selected LLM, Sonic, tools and telephony. This overview still references Sonic 3.5; the dedicated current model page identifies Sonic 3.6.

v2-voice-cartesia-product · official · Captured 2026-09-27T02:53:32Z

Cartesia Sonic 3.6 model documentation2026-09-27reviewed

Sonic 3.6 supports 44 named languages. Its dated 2026-08-27 snapshot is stable; the undated model alias may receive updates. Older professional voice clones work with Sonic 3.6.

v2-voice-cartesia-model · official · Captured 2026-09-27T02:53:32Z

Cartesia trust center2026-09-27reviewed

The public trust center lists HIPAA, SOC 2 Type 2 and GDPR. Audit reports and scope require access. This is vendor-published compliance evidence, not our audit.

v2-voice-cartesia-trust · vendor-claim · Captured 2026-09-27T02:53:32Z