C3 AI vs Stack AI

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

The short answer

Stack AI is the stronger AI pick in AI Agents: it has a visibility score of 1.4 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 · Stack AI 0pp over 0 weekly runs.

Stack AI leads on 1 of 3 engines

ChatGPT

0.9%

AI Mode

0.9%

Perplexity

0.9%

4.3%

C3 AIStack AI

0 engine answers name both brands

0C3 AI ranked higher

0Stack AI ranked higher

Dimension	C3 AI	Stack AI
Pricing model	—	Usage-based
Entry price	—	Contact sales
Free plan	—	Yes
Deployment	The company says its platform runs across any infrastructure.	Multi-tenant cloud, VPC, or on-premise
Integrations	—	500+
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, GDPR, SOC 2 Type II, ISO 27001
Support	Customer Support Portal, 24/7 support line in customer contract, Email support@c3.ai	Community support on Discord, Email support, Priority support, Dedicated support
Founded	2009	2023
Headquarters	Redwood City, California	San Francisco, CA, United States
Employees	1,001–5,000	51–200
Funding	IPO	Series A · $19M raised
Best for	Large operators in defense and intelligence, maritime, manufacturing, federal government, oil and gas, utilities and healthcare.	IT teams and enterprise architecture teams that need to orchestrate, deploy, govern, and scale AI across the enterprise, including finance, risk and operations teams.