Pricing

True pay as you go.Only pay for the minutes you use.

Most voice platforms ask for annual commits before you ship. Karasu starts with free credit: pay as you scale, then move to enterprise terms when procurement and compliance need a formal path.

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Overview

Built to scale with you

From quick-start usage billing to enterprise-grade agreements and support. Karasu meets you where you are and grows with your call volume.

Pay as you go

Go live in minutes with $5 in free credits. Full platform access, no commitments. Build, test, and pay only for what you use.

$0.05 / minfor realtime voice agents with Karasu telephony (all-in)
$0.03 / minwith BYO telephony (e.g. Twilio)

Recognition, LLM, TTS, and session runtime included in Karasu usage pricing.

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Key features include

Full access to the Realtime Voice API
One metered price per minute, with no fee stacking
Docs, examples, and templates to ship faster
Dashboard for API keys, usage, and project settings

Enterprise

For teams that need signed agreements, security diligence, and hands-on support while hardening production.

Tailored ratesfor sustained, high-volume voice traffic
Custom termscontracts, SLAs, and onboarding playbooks

Get direct implementation support and help from Karasu labs engineers team.

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Everything in pay as you go, plus

Everything in the usage tier
Named implementation and solutions support
Enterprise MSA and DPA options
Committed-use pricing and SLAs

Looking for API pricing?

Pay as you go estimate

Estimate your monthly cost

Adjust minutes and a competitor rate to see an approximate monthly total. Numbers are illustrative; your dashboard reflects actual usage.

Karasu bills one blended minute that already includes speech recognition, the model, synthesis, and session time.

Monthly call

Enter your expected monthly call volume in minutes to estimate costs.

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Comparison

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Review feature coverage across pay-as-you-go and enterprise so you can choose the right rollout model for your team.

Items	Pay as you go Sign up for free	Enterprise Contact Sales
Voice AI	Pay as you go	Enterprise
Price	$0.05/minute or $0.03/minute	Custom pricing
Concurrent calls	20 included, more available on demand	No cap on concurrent calls
Infrastructure	Pay as you go	Enterprise
Server	Shared	Dedicated stable server
Built-in fallback system
Compliance	Pay as you go	Enterprise
Built-in safety guardrails
Personal info redaction (PII)
Opt-out recording and transcription
HIPAA / BAA
SSO
Custom MSA
Custom DPA
Custom BAA
Role-based access control
Support	Pay as you go	Enterprise
Community and email support
24/7 support with dedicated portal
Dedicated implementation support
Named account manager

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Why developers pick Karasu: one all-in minute, no stacked fees.

We fold STT, LLM, TTS, and connect fees into one per-minute estimate when vendors publish enough detail, not landing-page headline rates alone.

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Provider	Advertised rate	True all-in cost*	All-inclusive?	Hidden fees?
Karasu Labs	$0.05/min	$0.05/min	Yes	None
Bland AI	$0.11/min	~$0.12–$0.14/min	Partial	Monthly plan fee
CloudTalk	from $99/mo (200 AI min)	~$0.50/min AI + per-user platform	Partial	Seats, dialers, SMS, add-ons
Retell AI	$0.07/min	~$0.13–$0.31/min	Partial	LLM, voice add-ons
Vapi	$0.05/min	~$0.18–$0.33/min	No (customer keys)	STT, LLM, TTS, SIP
Synthflow	from ~$0.225/min	~$0.225/min	Yes	Monthly plan required

* True all-in cost estimates include STT, LLM, TTS, and connect fees where applicable. Based on publicly reported rates as of 2026. Karasu Labs rate is fully inclusive: one flat price, no stacking.

Advantages

The voice AI stack built for real call volume

Most stacks make you wire vendors and reconcile invoices. Karasu keeps pricing and product surface area simple so your team can focus on call quality and outcomes.

All-in voice stack

Speech recognition, the model, synthesis, and session time roll into one metered minute. Fewer line items, fewer surprises on your invoice.

Usage-based billing

Start with free credit, then pay for what you run. No annual contract required to ship your first production agent.

Ship in days

Realtime Voice API, examples, and a dashboard for keys and usage so you can move from signup to live traffic quickly.

Enterprise when you need it

When volume, compliance, or procurement need a formal path, move to custom terms, SLAs, and hands-on rollout support.

FAQ

Common questions

Quick answers on billing, transfers, concurrency, and invoicing so pricing is clear before you scale.

Time to hire your AI
call center

Revolutionize your call operation with Karasu. Start building out-of-the-box conversational agents in minutes.

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Items

Pay as you go

Enterprise

Contact Sales

Voice AI

Pay as you go

Enterprise

Price

$0.05/minute or $0.03/minute

Custom pricing

Concurrent calls

20 included, more available on demand

No cap on concurrent calls

Infrastructure

Pay as you go

Enterprise

Server

Shared

Dedicated stable server

Built-in fallback system

Compliance

Pay as you go

Enterprise

Built-in safety guardrails

Personal info redaction (PII)

Opt-out recording and transcription

HIPAA / BAA

SSO

Custom MSA

Custom DPA

Custom BAA

Role-based access control

Support

Pay as you go

Enterprise

Community and email support

24/7 support with dedicated portal

Dedicated implementation support

Named account manager

Provider

Advertised rate

True all-in cost*

All-inclusive?

Hidden fees?

Karasu Labs

$0.05/min

Yes

None

Bland AI

$0.11/min

~$0.12–$0.14/min

Partial

Monthly plan fee

CloudTalk

from $99/mo (200 AI min)

~$0.50/min AI + per-user platform

Partial

Seats, dialers, SMS, add-ons

Retell AI

$0.07/min

~$0.13–$0.31/min

Partial

LLM, voice add-ons

Vapi

$0.05/min

~$0.18–$0.33/min

No (customer keys)

STT, LLM, TTS, SIP

Synthflow

from ~$0.225/min

~$0.225/min

Yes

Monthly plan required

The voice AI stack built for real call volume

Most stacks make you wire vendors and reconcile invoices. Karasu keeps pricing and product surface area simple so your team can focus on call quality and outcomes.

All-in voice stack

Speech recognition, the model, synthesis, and session time roll into one metered minute. Fewer line items, fewer surprises on your invoice.

Usage-based billing

Start with free credit, then pay for what you run. No annual contract required to ship your first production agent.

Ship in days

Realtime Voice API, examples, and a dashboard for keys and usage so you can move from signup to live traffic quickly.

Enterprise when you need it

When volume, compliance, or procurement need a formal path, move to custom terms, SLAs, and hands-on rollout support.

True pay as you go.Only pay for the minutes you use.

Built to scale with you

Pay as you go

Enterprise

Estimate your monthly cost

Compare pricing

Why developers pick Karasu: one all-in minute, no stacked fees.

The voice AI stack built for real call volume

All-in voice stack

Usage-based billing

Ship in days

Enterprise when you need it

Common questions

How do you calculate the minutes?

Does billing continue after a transfer?

Am I charged during silence or hold time?

How do I access invoices and add company details?

Do I get charged for failed calls or voicemails?

How do concurrent call limits work?

Time to hire your AIcall center

True pay as you go.Only pay for the minutes you use.

Built to scale with you

Pay as you go

Enterprise

Estimate your monthly cost

Compare pricing

Why developers pick Karasu: one all-in minute, no stacked fees.

The voice AI stack built for real call volume

All-in voice stack

Usage-based billing

Ship in days

Enterprise when you need it

Common questions

How do you calculate the minutes?

Does billing continue after a transfer?

Am I charged during silence or hold time?

How do I access invoices and add company details?

Do I get charged for failed calls or voicemails?

How do concurrent call limits work?

Time to hire your AIcall center

Time to hire your AI
call center

Time to hire your AI
call center