Mastra vs Retell AI

Which one do AI engines recommend, and how do they differ on price, fit and features?

The short answer

Retell AI is the stronger AI pick in AI Agents: it has a visibility score of 2 versus 1.2 for Mastra, and ranks ahead in 0% of the answers that name both.

Choose Mastra if…

Flat tiers pricing suits your budget better than usage-based
Type-safe, production-grade application code
Suited to serious production systems

Choose Retell AI if…

You want the brand AI engines rank higher (2 vs 1.2)
You need a self-hosted or on-premises option
You need HIPAA or SOC 2 Type II or GDPR or ISO 27001 coverage
You prefer a larger, established vendor (51–200 employees)

AI visibility side by side

Latest weekly run · Nov 3

Metric	Mastra	Retell AI
Visibility score	1.2%	2%
Change vs last week	New	New
Rank in AI Agents	#56	#42
Share of voice	0.5%	0.5%
Mentions this run	3	3
Positive in AI answers	100%	—

The stronger value in each row is marked with a ✓.

Visibility score trend

Weekly runs over the last 60 days

Mastra 0pp · Retell AI 0pp over 0 weekly runs.

Engine by engine

Retell AI leads on 2 of 3 engines

ChatGPT

3.1%

AI Mode

1.7%

Perplexity

1.9%

0.9%

MastraRetell AI

Head to head in AI answers

1 engine answers name both brands

1Mastra ranked higher

0Retell AI ranked higher

Prompt	Engine	Mastra	Retell AI
What are the best AI Agents tools in 2026?	Perplexity	#12	#13

Features, pricing & fit

Dimension	Mastra	Retell AI
Pricing model	Flat tiers	Usage-based
Entry price	Free; paid from $250 / mo	Contact sales
Free plan	Yes	Yes
Deployment	Self-hosted on any Node.js-compatible environment, or hosted on Mastra Cloud and Mastra Platform.	Cloud platform, with enterprise on-premises deployment available
Compliance	—	HIPAA, SOC 2 Type II, GDPR, ISO 27001
Support	Shared Slack support channel (Enterprise), Dedicated support engineer (Enterprise), SLA support 8-5 Monday-Friday, 8am-6pm PST	Community and email support, 24/7 omnichannel support with dedicated portal (Enterprise), Dedicated implementation support (Enterprise), Named account manager (Enterprise)
Founded	2024	2023
Headquarters	San Francisco	Redwood City, California
Employees	11–50	51–200
Funding	Series A · $35M raised	Seed · $5M raised
Best for	Developers and teams building AI agents in TypeScript and JavaScript	Businesses that run high call volumes in healthcare, insurance, financial services, logistics and similar fields, and teams that want to build and change voice agents themselves.