Datadog Cloud SIEM vs ArcSight: SIEM Comparison (2026)

An independent side-by-side comparison of Datadog Cloud SIEM and ArcSight 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
Datadog Cloud SIEM
Tracking…
No data yet
ArcSight
Tracking…
No data yet
Perplexity
Datadog Cloud SIEM
0 / 1 probes
0%
Invisible
ArcSight
0 / 1 probes
0%
Invisible
Gemini
Datadog Cloud SIEM
Tracking…
No data yet
ArcSight
Tracking…
No data yet
Claude
Datadog Cloud SIEM
Tracking…
No data yet
ArcSight
Tracking…
No data yet
Copilot
Datadog Cloud SIEM
Tracking…
No data yet
ArcSight
Tracking…
No data yet
Scale:NoneLowFairStrongExcellent

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

Pricing

Datadog Cloud SIEM
Starting price
$5/GB/month
Free tier
—
datadoghq.com ↗
ArcSight
Starting price
—
Free tier
—
opentext.com ↗

Key Features

Datadog Cloud SIEM
  • ✓800+ detection rules
  • ✓Real-time alert analysis
  • ✓12-month data retention
  • ✓Automated incident workflows
ArcSight

Feature data is being indexed.

When to choose Datadog Cloud SIEM

Choose Datadog Cloud SIEM if your team prioritizes its strengths over ArcSight's. Full guidance populates as Datadog Cloud SIEM's feature data is indexed.

When to choose ArcSight

Choose ArcSight if your team prioritizes its strengths over Datadog Cloud SIEM's. Full guidance populates as ArcSight's feature data is indexed.

AI visibility profiles

Is one of these your brand?

Get the full report by email: every siem buyer question we ask, which engines name you, and who gets named instead.

Datadog Cloud SIEM

datadoghq.com

ArcSight

opentext.com

Free check

Check any brand's AI visibility — free

We ask the buyer questions in this market across ChatGPT, Claude, Gemini, Perplexity and Copilot, and show you who gets named.

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