C3 AI 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 0.9 for C3 AI.

You need SOC 1 or SOC 2 or SOC 3 or FedRAMP or FedRAMP Moderate or FISMA or FIPS 140-2 or ITAR or PCI DSS Level 1 or DoD IL5 or DoD IL6 coverage
You prefer a larger, established vendor (1,001–5,000 employees)
Enterprise-scale AI solutions

Latest weekly run · Nov 3

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

Weekly runs over the last 60 days

C3 AI 0pp · Retell AI 0pp over 0 weekly runs.

Retell AI leads on 3 of 3 engines

ChatGPT

0.9%

3.1%

AI Mode

0.9%

Perplexity

0.9%

C3 AIRetell AI

0 engine answers name both brands

0C3 AI ranked higher

0Retell AI ranked higher

Dimension	C3 AI	Retell AI
Pricing model	—	Usage-based
Entry price	—	Contact sales
Free plan	—	Yes
Deployment	The company says its platform runs across any infrastructure.	Cloud platform, with enterprise on-premises deployment available
Compliance	SOC 1, SOC 2, SOC 3, FedRAMP, FedRAMP Moderate, FISMA, FIPS 140-2, ITAR, HIPAA, PCI DSS Level 1, DoD IL5, DoD IL6	HIPAA, SOC 2 Type II, GDPR, ISO 27001
Support	Customer Support Portal, 24/7 support line in customer contract, Email support@c3.ai	Community and email support, 24/7 omnichannel support with dedicated portal (Enterprise), Dedicated implementation support (Enterprise), Named account manager (Enterprise)
Founded	2009	2023
Headquarters	Redwood City, California	Redwood City, California
Employees	1,001–5,000	51–200
Funding	IPO	Seed · $5M raised
Best for	Large operators in defense and intelligence, maritime, manufacturing, federal government, oil and gas, utilities and healthcare.	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.