Regal vs Retell AI (2026): which should you pick?

Pick Regal if

• Fits if you run a large contact centre with tens of thousands of call minutes a month
• Makes sense if you want phone and text agents tested before they go live

Look elsewhere if

• Not for you if you are small: the vendor itself suggests a floor of about 25 agents
• Skip it if you want a price on the page, as none is published
• Watch out: implementation goes through the vendor's engineering team
• Tight if you want to self-serve: there is no free plan or trial

Pick Retell AI if

• Fits if you want to pay per minute with no monthly commitment
• Works for developers wiring phone agents into Twilio or HubSpot

Look elsewhere if

• Pricey if you add it up, as model, voice and telephony sit on top of the $0.055 base
• Watch out: HIPAA and BAA, SSO, role-based access and custom retention are Enterprise only
• Watch out: AI quality assurance and PII removal are charged per minute on top
• Not for you if you want a fixed bill, because cost moves with minutes

Regal

• No prices are published; the vendor says price follows the features used and falls with higher spend and longer contracts.
• The vendor says Regal suits enterprises, with a rough floor of 25 agents and 25,000 call minutes a month.
• Implementation is done with the vendor's forward deployed engineering team.

Retell AI

• The rate is a sum of parts: voice infrastructure is $0.055 per minute, with model, voice and telephony on top, hence $0.07 to $0.31.
• The comparison table lists HIPAA and BAA, SSO, role-based access and custom data retention for Enterprise only.
• Dedicated implementation support and a dedicated stable server are Enterprise add-ons.
• Add-ons such as AI quality assurance and PII removal are charged per minute on top of the base rate.

Regal

Phone, SMS, chat and WebRTC agents

The same agent can be deployed across voice calls, text messages, web chat and in-browser voice.

AI Agent Builder and Journey Builder

Drag-and-drop orchestration for the conversation and for the sequence of touches around it.

Simulations and A/B testing

Native A/B testing and simulations to refine agents before and after they go live.

Conversation intelligence

Live monitoring, automated quality assurance and analytics on every call.

Human and AI hand-off

Includes a unified agent desktop so human agents can take over from the AI agents.

Retell AI

Inbound and outbound phone agents

Agents answer or place calls, transfer to a human, book appointments, use a knowledge base and navigate keypad menus.

Batch calls and caller ID

The deploy menu lists batch calling for high-volume campaigns, branded caller ID and verified phone numbers.

Testing and monitoring

Simulation testing, call transcripts and analytics, post-call analysis and AI quality assurance are listed for monitoring agents.

Model and voice choice

The cost estimator offers language models from OpenAI, Anthropic and Google and voices from Retell, ElevenLabs, Cartesia, Minimax, Fish and OpenAI.

Chat agents

The same platform runs chat agents, priced from $0.002 per message.

Regal

Pricing could not be confirmed. See regal.ai.

Retell AI

• Pay as you go$0

  to start, then $0.07-$0.31 per minute

  Voice agents at $0.07-$0.31 per minute, chat agents from $0.002 per message, 20 free concurrent calls, API access and email support.

• EnterpriseCustom

  Custom voice and chat pricing, role-based access, custom SSO, MSA, DPA and BAA terms, and 24/7 support with a dedicated portal.