Datadog vs Tessian: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Datadog and Tessian side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, Datadog leads on a free plan. We do not name an overall winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Datadog
Cloud monitoring, security, and AI investigations for DevOps
Best for you if:
- • You want a free tier before you commit
Tessian
Advanced AI for email security to defend against phishing and prevent data loss.
Best for you if:
- • You want leverages advanced AI for superior threat detection
| At a Glance | Datadog | Tessian |
|---|---|---|
Starts at | Free plan, paid from $18/host/mo, billed yearly Infrastructure Pro plan | Not published |
Category | Monitoring Log Management | Security AI & Automation |
Rating | 4.4/5 G2 4.4 726 reviews | n/a |
Free plan | Yes | No |
Watch out for | APM requires Infrastructure Monitoring on the SAME hosts: you cannot buy APM alone. | n/a |
Choose Datadog or Tessian?
Choose Datadog if
- You want a free tier before you commit
- You want comprehensive platform
- You want great visualizations
- You work in monitoring, not security
Choose Tessian if
- You want leverages advanced AI for superior threat detection
- You want specifically targets human error, a major cause of cyberattacks
- You work in security, not monitoring
In-Depth Analysis
Datadog
Cloud monitoring, security, and AI investigations for DevOps
Datadog is the most comprehensive observability platform, infrastructure monitoring, APM, logs, RUM, security, and 750+ integrations in one place.
Watch out
APM requires Infrastructure Monitoring on the SAME hosts: you cannot buy APM alone.
Strengths
- Pro: Comprehensive platform
- Pro: Great visualizations
- Pro: 700+ integrations
Weaknesses
- Con: Complex pricing
- Con: Can be expensive
Key features
Tessian
Advanced AI for email security to defend against phishing and prevent data loss.
Strengths
- Pro: Leverages advanced AI for superior threat detection
- Pro: Specifically targets human error, a major cause of cyberattacks
- Pro: Comprehensive protection against both phishing and data loss
- Pro: Reduces operational costs for security teams
- Pro: Integrated with an industry-leading security platform (Proofpoint)
Weaknesses
- Con: No explicit free tier or trial mentioned
- Con: Requires integration with existing email infrastructure
- Con: Specific pricing details are not publicly available
Key features
Plans and prices: Datadog vs Tessian
| Tool | Plans and prices | Source |
|---|---|---|
| Datadog |
| datadoghq.com/pricing read Oct 26, 2026 |
| Tessian |
| tessian.com/pricing read Oct 2, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Datadog pricing and Tessian pricing.
Key Takeaways
Datadog
- Has a free plan
Tessian
- Choose if you want advanced AI for email security to defend against phishing and prevent data loss
What the data shows
On the data below, Datadog leads on a free plan. We do not name an overall winner for this pair.
- Only Datadog has a published user rating (4.4/5 from 726 reviews); Tessian has none we can show.
- Datadog starts at $18/host/mo, billed yearly; Tessian has no public paid plan price on file.
- Only Datadog has a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Datadog and Tessian compare in 2026?
On the data below, Datadog leads on a free plan. We do not name an overall winner for this pair. Only Datadog has a published user rating (4.4/5 from 726 reviews); Tessian has none we can show. Datadog starts at $18/host/mo, billed yearly; Tessian has no public paid plan price on file. Only Datadog has a free plan.
What are Datadog and Tessian used for?
Datadog: Cloud monitoring, security, and AI investigations for DevOps. Tessian: Advanced AI for email security to defend against phishing and prevent data loss.
What does Datadog cost vs Tessian?
Datadog's cheapest paid plan is Infrastructure Pro at $18/host/mo, billed yearly; it also has a free plan. Tessian has no public paid-plan price on file. Prices read on the vendors' pricing pages, latest check Oct 26, 2026.
What's the main difference between Datadog and Tessian?
Datadog's main strength: comprehensive platform. Tessian's main strength: leverages advanced AI for superior threat detection.