What is the difference between Datadog and Highlight.io?

Datadog is best for Engineering teams running complex, multi-service infrastructure at scale, while Highlight.io is best for Teams wanting session replay, error tracking, and logging in one open-source tool. Datadog starts at $15/host/mo and Highlight.io starts at $50/mo.

Is Datadog or Highlight.io cheaper?

Datadog starts at $15/host/mo with a free tier. Highlight.io starts at $50/mo with a free tier.

Is there a free alternative to Highlight.io?

Both Datadog and Highlight.io offer free tiers.

Datadog vs Highlight.io (2026)

At a glance

	Datadog	Highlight.io
Best for	Engineering teams running complex, multi-service infrastructure at scale	Teams wanting session replay, error tracking, and logging in one open-source tool
Starting price	$15/host/mo	$50/mo
Free tier	✓	✓
Open source	—	✓

Datadog

Strengths

Most comprehensive monitoring platform available
750+ integrations covering virtually every technology
Powerful dashboards and alerting with anomaly detection
Unified view of infrastructure, APM, logs, and security

Weaknesses

Pricing is complex and gets very expensive at scale
Each module (APM, logs, RUM) billed separately
Can be overwhelming to configure and navigate
Vendor lock-in with proprietary query language

Try Datadog → Full review

Highlight.io

Strengths

Session replay + errors + logs in one tool
Open source with self-hosting option
Frontend and backend monitoring together
Source map support for readable stack traces

Weaknesses

Each feature is less deep than dedicated tools
Self-hosting requires significant infrastructure
Newer product with smaller community
Can be resource-intensive

Try Highlight.io → Full review

The bottom line

Datadog and Highlight.io serve similar needs but take different approaches. Engineering teams running complex, multi-service infrastructure at scale while Highlight.io is teams wanting session replay, error tracking, and logging in one open-source tool.