How does the HubSpot integration compare?

Retell AI has no native HubSpot app — sync, activity logging and workflow triggers must be built against the API. Outreach Master provides a native HubSpot Workflow action, automatic activity logging with transcript/summary and custom properties for BANT signals.

Does Retell AI make sense without an in-house engineering team?

Not really. Retell is API-first and assumes you orchestrate telephony, LLM configuration, webhooks and CRM sync yourself. Sales teams without dev resources move much faster with Outreach Master.

Is Retell AI GDPR compliant?

Retell AI hosts primarily in the US and offers GDPR clauses, but EU hosting is not the default. Outreach Master hosts exclusively in Frankfurt with a German Art. 28 GDPR DPA — relevant for DACH teams with strict compliance requirements.

What does migration cost?

No setup fee. Existing Retell scripts can be rebuilt as Outreach Master agents in 1–2 hours. 28-day free trial, then pay-per-use for call minutes.

Alternative for HubSpot

Retell AI

→

Outreach Master

Retell AI alternative for HubSpot

AI voice agents inside HubSpot sequences instead of a DIY API build.

TL;DR

Retell AI is a strong developer-first platform for AI voice agents with low latency and a flexible API — but the HubSpot connection is on you to build via webhooks and custom integrations. Outreach Master is the HubSpot-native alternative: AI phone calls are triggered from HubSpot Workflows, logged on the contact (transcript, summary, BANT) and embedded into the same sequence as email and LinkedIn — pay-per-use, EU hosting (Frankfurt), German DPA.

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About Retell AI

Developer-first platform for AI voice agents (inbound & outbound) with API/SDK and low latency.

Retell AI targets engineering teams that want to build voice workflows themselves: API-first, low latency, bring-your-own telephony. Teams with HubSpot as master CRM that want AI calls inside sales sequences face weeks of integration work. Outreach Master ships exactly those workflow triggers, native activity logging and AI insights on the HubSpot contact — preconfigured.

Feature comparison in detail

Where the differences lie – feature by feature.

Feature	Retell AI	Outreach Master
Autonomous AI voice agents (outbound cold calls)
Native HubSpot CRM integration
Trigger via HubSpot Workflows
Calls auto-logged as HubSpot activity
AI summary, BANT signals & next steps in HubSpot
Multichannel: AI calls inside email/LinkedIn sequence
Meeting booking during the call
EU hosting & GDPR DPA
Pay-per-use pricing (per-second)
Multilingual voice agents (DE/EN)

✓ fully supported · – partial/manual · ✗ not supported

Pricing & terms

What does the solution cost – and what to watch out for.

Criterion	Retell AI	Outreach Master
Entry price	ab ~0,07 $/Minute + LLM + Telefonie	49 €/User/Monat · Pay-per-Use Calls
HubSpot integration	nur via API/Webhooks (Eigenbau)	nativ, Trigger + Logging + AI-Insights
Multichannel (email/LinkedIn)	nicht enthalten	in HubSpot-Sequenz integriert
EU hosting	US-basiert	Frankfurt (EU)

Pricing based on publicly available information as of 2025. Actual terms may vary.

Which tool fits you?

Pick the solution that fits your setup – or combine both.

Choose Retell AI

You have an engineering team and want to build voice workflows entirely yourself.
You need maximum control over latency, voice engine and telephony stack.
HubSpot sequences and sales cadences are not your use case.

Recommended for HubSpot

Choose Outreach Master

HubSpot is master CRM and AI calls should be workflow-triggered.
You want AI phone calls in the same sequence as email and LinkedIn.
AI summary, BANT signals and next-step suggestions must land on the HubSpot contact automatically.
EU hosting (Frankfurt) and a German Art. 28 GDPR DPA are mandatory.

Migration & setup

What switching looks like in practice.

Retell AI

Outreach Master

In practice: existing Retell agents are rebuilt as Outreach Master agents (script + goal + retry rules). HubSpot Workflows trigger the call, activities are auto-logged — no custom backend needed. Typical setup: 1–2 hours instead of weeks of integration work.