AT&T Cybersecurity AlienVault USM vs Splunk: SIEM Comparison (2026)

An independent side-by-side comparison of AT&T Cybersecurity AlienVault USM and Splunk for siem buyers — pricing, features, integrations, and how often each is cited by major AI engines.

AI Citation Scorecard

How often each is cited by major AI engines when buyers ask siem questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.

Too early to call — probes still building data.
ChatGPT
AT&T Cybersecurity AlienVault USM
Tracking…
No data yet
Splunk
4 / 6 probes
67%
Excellent
Perplexity
AT&T Cybersecurity AlienVault USM
Tracking…
No data yet
Splunk
6 / 7 probes
86%
Excellent
Gemini
AT&T Cybersecurity AlienVault USM
Tracking…
No data yet
Splunk
1 / 6 probes
17%
Average
Claude
AT&T Cybersecurity AlienVault USM
Tracking…
No data yet
Splunk
4 / 6 probes
67%
Excellent
Copilot
AT&T Cybersecurity AlienVault USM
Tracking…
No data yet
Splunk
2 / 6 probes
33%
Good
Scale:NoneLowFairStrongExcellent

Probes run hourly; each (engine × query) combo retests every ~3 days.

Pricing

AT&T Cybersecurity AlienVault USM
Starting price
Free tier
att.com
Splunk
Starting price
Free tier
splunk.com

Key Features

AT&T Cybersecurity AlienVault USM

Feature data is being indexed.

Splunk
  • Workload-based pricing
  • Ingest pricing model
  • Entity-based pricing
  • Activity-based pricing

When to choose AT&T Cybersecurity AlienVault USM

Choose AT&T Cybersecurity AlienVault USM if your team prioritizes its strengths over Splunk's. Full guidance populates as AT&T Cybersecurity AlienVault USM's feature data is indexed.

When to choose Splunk

Choose Splunk if your team prioritizes its strengths over AT&T Cybersecurity AlienVault USM's. Full guidance populates as Splunk's feature data is indexed.

AI visibility profiles

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