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No Platform fees.
‍pay only for what you use

Treat Retell like your outsourced call center.

Pay as you go
$0 to start.
Self-Serve
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Details
$0.07+/minute for AI Voice Agents
$0.002+/msg for AI Chat Agents
Pre-build Functions
Simulation Testing
Analytics
$10  Free credits
20 Free concurrent calls
10 Free Knowledge Bases
Discord and Email support.
Enterprise Plan
For companies with large call volumes (over $3k/month)
Optional White-Glove Service
Prefer not to DIY? We’ll custom-build and scale your AI agent for you.
Contact Sales
Contact Sales
Details
Includes everything from pay as you go
Discounted pricing based on volumes
Fully managed agent setup
Additional Included concurrency
Early access to beta features
Higher Limit on Knowledge Bases
Custom concurrent calls based on volumes
Premium private Slack channel support with dedicated support teams.
Pricing Calculator

Estimate your cost

Adjust your usage, LLM, engine, and telephony to see real time pricing for our AI voice agent solution.

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Pricing Table

Detailed Component Pricing

Call Agent Pricing

Default Version
Speech to Speech Version
Pricing
=
Conversation Voice Engine
+
LLM
+
Telephony
*Prompts exceeding 3500 tokens will incur a surcharge.
Conversation Voice Engine
Pricing
Note
With Elevenlabs/Cartesia voices
$0.07/minute
No charge for custom phone numbers.
With OpenAI voices
$0.08/minute
Free for first 10 knowledge bases
LLM
Pricing
Note
GPT 5
$0.04/minute
Fast Tier $0.08/minute
GPT 5 mini
$0.012/minute
Fast Tier $0.024/minute
GPT 5 nano
$0.003/minute
Fast Tier $0.006/minute
GPT 4.1
$0.045/minute
Fast Tier $0.0675/minute
GPT 4.1 mini
$0.016/minute
Fast Tier $0.024/minute
GPT 4.1 nano
$0.004/minute
Fast Tier $0.006/minute
GPT 4o
$0.05/minute
Fast Tier $0.075/minute
GPT 4o mini
$0.006/minute
Fast Tier $0.009/minute
Claude 4.5 sonnet
$0.08/minute
No charge for custom phone numbers.
Claude 4.5 haiku
$0.025/minute
No charge for custom phone numbers.
Claude 3.7 sonnet
$0.06/minute
No charge for custom phone numbers.
Claude 3.5 haiku
$0.02/minute
No charge for custom phone numbers.
Gemini 2.0 Flash
$0.006/minute
No charge for custom phone numbers.
Gemini 2.0 Flash Lite
$0.003/minute
Free for first 10 knowledge bases
Telephony
Pricing
Note
Retell Twilio
$0.015/min
No Charge for Sip Trunking/Custom Telephony
International Call Pricing
Country
Pricing(Destination/Origination)
US
$0.015
US(Toll free)
$0.06
India
$0.15
Australia
$0.1
Germany
$0.1
Spain
$0.1
UK
$0.1
Mexico
$0.05
France
$0.06
Japan
$0.28
Canada
$0.03
Italy
$0.06
Indonesia
$0.4
Philippines
$0.8
Malaysia
$0.2
Thai
$0.45
US (Telnyx)
$0.03
India(Telnyx)
$0.25
Canada(Telnyx)
$0.03
Or Pricing
=
Speech-to-speech LLM
+
Telephony
Speech-to-speech LLM
Pricing
Note
GPT 4o Realtime
$0.50/minute
No charge for custom phone numbers.
GPT 4o mini Realtime
$0.125/minute
No charge for custom phone numbers.

Call Agent Add-ons

Items
Pricing
Note
Knowledge Base
+$0.005/minute
No charge for custom phone numbers.
Batch Call
+$0.005/dial
Free for first 20 concurrency
Branded Call
+$0.10/outbound call
Free for first 10 knowledge bases
Advanced Denoising
+0.005/min
Free for first 10 knowledge bases
PII Removal
+0.01/min
Free for first 10 knowledge bases

Chat Agent Pricing

LLMs
Pricing
Note
GPT 4.1
$0.015/AI msg
Recommended
GPT 4.1 mini
$0.006/AI msg
Cheaper Choice
GPT 4.1 nano
$0.002/AI msg
No charge for custom phone numbers.
GPT 4o
$0.017/AI msg
Recommended
GPT 4o mini
$0.002/AI msg
No charge for custom phone numbers.
GPT 5
$0.013/AI msg
No charge for custom phone numbers.
GPT 5 mini
$0.004/AI msg
No charge for custom phone numbers.
GPT 5 nano
$0.001/AI msg
No charge for custom phone numbers.
Claude 3.7 sonnet
$0.021/AI msg
No charge for custom phone numbers.
Claude 4.5  sonnet
$0.03/AI msg
No charge for custom phone numbers.
Claude 3.5 haiku
$0.006/AI msg
No charge for custom phone numbers.
Claude 4.0  sonnet
$0.03/AI msg
No charge for custom phone numbers.
Claude 4.5 haiku
$0.007/AI msg
No charge for custom phone numbers.
Gemini 2.0 Flash
$0.006/AI msg
Free for first 20 concurrency
Gemini 2.0 Flash Lite
$0.003/AI msg
Free for first 10 knowledge bases
Gemini 2.5 Flash
$0.012/AI msg
Free for first 10 knowledge bases
Gemini 2.5 Flash Lite
$0.006/AI msg
Free for first 10 knowledge bases

Chat Agent Add-ons

Items
Pricing
Note
SMS
$0.01/Msg
Free for first 10 knowledge bases

Monthly Subscriptions Items

Items
Pricing
Note
Retell Phone Numbers
$2.00/month
No charge for custom phone numbers.
Retell SMS
$20.00/month
No charge for custom telephony SMS.
Concurrency (Active Calls)
$8.00/Concurrency/month
Free for first 20 concurrency (active calls)
Knowledge Base
$8.00/Knowledge Base/month
Free for first 10 knowledge bases
Verified Phone Number
$100.00/Phone number/month
Free for first 10 knowledge bases
Comparison

Compare Plans

Voice AI
Price
Concurrent calls
Compliance
Opt out recording & transcription
HIPAA / BAA
Vendor Questionnaire
Uptime SLAs
Support
Community Support
Email Support
Private Slack Channel Support
Prompt Engineering Support
Onboarding Meeting

Pay-as-you-go

Try us for free
Try us for free
$0.07-$0.31 /min
free 20 calls, can purchase

Enterprise

Contact Sales
Contact Sales
As low as $0.05/min
scale from 50+ calls
F.A.Q

Questions & answers

Explore how AI voice agents pricing work.

How do you calculate the minutes?
When the voice agent does a call transfer, does billing continue after the transfer?
If someone is not talking during the call, will you still charge the fee?
How can I download the invoice and add company details?
More questions? Visit our docs

Time to hire your AI call center.

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