C3 AI vs Glean

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

The short answer

C3 AI is the stronger AI pick in AI Agents: it has a visibility score of 0.9 versus 0.9 for Glean, and ranks ahead in 0% of the answers that name both.

Choose C3 AI if…

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

Choose Glean if…

You need ISO 42001 or TX-RAMP Level 2 or SOC 2 Type II or ISO 27001 or GDPR coverage
Enterprise search across many connected apps
Seen as a market leader in enterprise search
Finds answers and internal experts quickly

AI visibility side by side

Latest weekly run · Nov 3

Metric	C3 AI	Glean
Visibility score	0.9%	0.9%
Change vs last week	New	New
Rank in AI Agents	#59	#63
Share of voice	0.5%	0.4%
Mentions this run	3	3
Positive in AI answers	—	56%

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

Visibility score trend

Weekly runs over the last 60 days

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

Engine by engine

C3 AI leads on 2 of 3 engines

ChatGPT

0.9%

2.8%

AI Mode

0.9%

Perplexity

0.9%

C3 AIGlean

Head to head in AI answers

1 engine answers name both brands

0C3 AI ranked higher

1Glean ranked higher

Prompt	Engine	C3 AI	Glean
Which AI Agents vendors do analysts recommend?	ChatGPT	#23	#12

Features, pricing & fit

Dimension	C3 AI	Glean
Deployment	The company says its platform runs across any infrastructure.	Per-customer search model stored in the customer's VPC
Integrations	—	250+
Compliance	SOC 1, SOC 2, SOC 3, FedRAMP, FedRAMP Moderate, FISMA, FIPS 140-2, ITAR, HIPAA, PCI DSS Level 1, DoD IL5, DoD IL6	ISO 42001, HIPAA, TX-RAMP Level 2, SOC 2 Type II, ISO 27001, GDPR
Support	Customer Support Portal, 24/7 support line in customer contract, Email support@c3.ai	Help Center
Founded	2009	2019
Headquarters	Redwood City, California	San Francisco, CA
Employees	1,001–5,000	501–1,000
Funding	IPO	Seed or early-stage round (emerged from stealth) · $765M raised
Best for	Large operators in defense and intelligence, maritime, manufacturing, federal government, oil and gas, utilities and healthcare.	Large enterprises that want AI answers and agents grounded in their own permission-aware company data