Shortlist by what you need
Start here if you know why you are leaving MarrLabs.
Want the closest match?
GuavaMost similar to MarrLabs in what it does, its category and its price.
Visit (opens Guava in a new tab)Need a free plan?
Retell AIHas a free plan, rated 4.2 out of 5. MarrLabs has none.
Visit (opens Retell AI in a new tab)Want the lowest price?
ConvoStackFrom $9/mo, the lowest starting price here.
Visit (opens ConvoStack in a new tab)Want the best rated?
GridspaceRated 4.0 out of 5 in our review, against 4.0 for MarrLabs.
Visit (opens Gridspace in a new tab)
At a glance
Green means better than MarrLabs, red means worse. Prices are starting prices per month.
| Tool | Our rating | Starts at | Free plan | Best for | Compare |
|---|---|---|---|---|---|
 MarrLabsBaseline | 4.0 | Not listed | No | AI voice agents built to sound human for phone-based scheduling, sales, and customer service. | |
| Guava | 4.1+0.1 | Not listed | No | A voice agent API built for regulated industries like healthcare, banking, and insurance. | vs MarrLabs |
| ConvoStack | 3.0−1.0 | $9/mo | No | AI voice agents that answer business calls, capture structured details and hand off to people, with credit plans from $9 a month. | vs MarrLabs |
 Insighto AI | 3.8−0.2 | Not listed | No | AI phone calling at $0.06/minute plus omnichannel chat (SMS, WhatsApp, email) across 50+ languages - CRM-integrated, pay only for what you use. | vs MarrLabs |
| Gridspace | 4.0Same | Not listed | No | Voice AI for regulated industries, built for calls that carry compliance consequences. | vs MarrLabs |
 Vogent | 4.0Same | Not listed | No | Voice agents at 200ms latency, with counterfactual analysis on past calls. | vs MarrLabs |
 Hyro | 3.9−0.1 | $10/mo | No | Conversational AI tuned for healthcare, finance, and retail rather than general-purpose support | vs MarrLabs |
| Retell AI | 4.2+0.2 | Free | YesMarrLabs has none | Phone-call AI agents at roughly 600 milliseconds of latency | vs MarrLabs |
 Synthflow AI | 3.9−0.1 | Not listed | No | No-code voice AI priced per minute, built for appointment scheduling and lead qualification calls | vs MarrLabs |
The alternatives in detail
In order of how closely each one matches MarrLabs.
Guava
4.1Not listed
vs MarrLabs+0.1
A voice agent API built for regulated industries like healthcare, banking, and insurance.
- Owns its full voice stack (ASR, TTS, and language models) instead of stitching third-party APIs
- Sub-1-second latency with a 99.9% uptime SLA for live call handling
- Built-in compliance engine with SOC 2 Type II, HITRUST i1, and PCI DSS Level 1 coverage
Full-stack voice ownership avoids latency and reliability issues of stacked third-party APIs
Recent rebrand from Gridspace to Guava may confuse buyers researching the older name
ConvoStack
3.0$9/mo
vs MarrLabs−1.0
AI voice agents that answer business calls, capture structured details and hand off to people, with credit plans from $9 a month.
- AI voice agents that answer business calls in real time
- Structured call records with summaries and captured details
- Human hand-off and escalation with context
Prices are published, from $9 a month
No operator is named, and the terms and privacy pages returned 404 when reviewed
Insighto AI
3.8Not listed
vs MarrLabs−0.2
AI phone calling at $0.06/minute plus omnichannel chat (SMS, WhatsApp, email) across 50+ languages - CRM-integrated, pay only for what you use.
- AI inbound and outbound phone calling
- Omnichannel chat: SMS, WhatsApp, email, live chat
- 50+ language support with real-time responses
Pay-as-you-go phone pricing fits fluctuating call volume better than a flat fee
Healthcare/insurance deployment carries real compliance obligations to verify yourself
Gridspace
4.0Not listed
vs MarrLabsSame
Voice AI for regulated industries, built for calls that carry compliance consequences.
- Voice AI designed around regulated-industry compliance requirements
- Grounded in the organisation's approved systems rather than open generation
- Support for both automated calls and live agent assistance
Compliance-first design suits sectors general voice AI cannot serve
Pricing requires a sales conversation
Vogent
4.0Not listed
vs MarrLabsSame
Voice agents at 200ms latency, with counterfactual analysis on past calls.
- No-code Flow Builder for agent design
- Counterfactual analysis against real past calls
- Knowledge bases, functions and call transfers
Counterfactual analysis evaluates changes against real calls
No pricing figures published
Hyro
3.9$10/mo
vs MarrLabs−0.1
Conversational AI tuned for healthcare, finance, and retail rather than general-purpose support.
- Conversational AI purpose-tuned for healthcare, finance, and retail industries
- Patient-facing scheduling and benefits conversation handling for healthcare systems
- Compliance-aware design for regulated-industry conversational interactions
Healthcare-specific compliance awareness addresses a real gap in general support chatbots
Narrower industry focus makes it a less natural fit for general e-commerce or SaaS support
Retell AI
4.2Free
vs MarrLabs+0.2Free plan
Phone-call AI agents at roughly 600 milliseconds of latency.
- Roughly 600ms latency tuned specifically for phone conversations
- Real-time function calling for bookings and payment processing
- Batch outbound calling campaigns with branded caller ID
Notably fast response latency suited specifically to phone conversations
Per-minute pricing adds up at high call volume without careful budgeting
Synthflow AI
3.9Not listed
vs MarrLabs−0.1
No-code voice AI priced per minute, built for appointment scheduling and lead qualification calls.
- No-code voice AI builder for appointment scheduling and lead qualification calls
- Per-minute pricing on the voice engine, roughly $0.09/minute plus model costs
- Direct calendar and CRM integrations configurable without code
No-code setup makes voice automation accessible without an engineering team
Per-minute-plus-model pricing structure needs tracking to avoid surprise costs at scale
FAQ
Questions people ask
Is MarrLabs free?
MarrLabs does not list a free plan. Check its pricing page for current plans.
What is the best free alternative to MarrLabs?
Retell AI is the highest-rated alternative here with a free plan (4.2 out of 5).
What is the cheapest alternative to MarrLabs?
Among paid plans, ConvoStack has the lowest starting price (from $9/mo). If you need it free, start with Retell AI.
How did you pick these alternatives?
We match tools on what they do, their category and their price, using the details in our directory. Ratings come from our reviews and reader reviews.