
Last9
Claim this toolUnified observability for developers, SREs, and AI agents to triage faster and ship code with confidence.
From $280/mo (free plan available)Visit WebsiteThe Bottom Line
- Price
- From $280/mo (free plan available). Compare plans
Key facts
- Unified observability for metrics, logs, traces, and APM without data sampling.
- AI-native features for automated root cause analysis and production debugging.
- Cost-effective with a Control Plane for telemetry management and no per-host pricing.
Pros
- Eliminates data sampling, providing full fidelity during incidents.
- AI-powered insights and debugging accelerate root cause analysis.
- Cost-effective with no per-host/node/user pricing and real-time cost monitoring.
- Seamless integration with existing tools and open standards (OTel, Prometheus).
- Reduces alert storms with built-in deduping and contextual alerting.
Cons
- Specific limitations on data retention and alert rules for the free tier.
- Advanced features like SLO monitoring and cold storage are not available in lower tiers.
- Requires integration with existing telemetry sources, which might involve initial setup.
What is Last9?
Available on: Web
Ratings Across the Web
Last9 holds an aggregate rating of 4.7 out of 5 from 51 reviews across G2, last checked September 23, 2026.
Ratings aggregated from independent review platforms. Learn more
Key Features
- Unified view for metrics, logs, traces, and APM
- AI-native copilots for alert explanation and RCA
- Control Plane for real-time telemetry ingestion management
- High-cardinality visibility without data sampling
- User Monitoring (RUM) for frontend and backend correlation
- Advanced alerting with GitOps support and anomaly detection
- Compatibility with existing telemetry sources (OTel native, Prometheus compatible)
- One-click import for Datadog/Grafana dashboards and monitors
Pricing Plans
Pricing checked Sep 18, 2026
| Plan | Price | Details |
|---|---|---|
| Free | $0 / mo |
+15 moreShow less
|
| Pro | $280 / mo |
+13 moreShow less
|
| Enterprise | Contact us |
+11 moreShow less
|
Is Last9 worth the price?
Last9's pricing is quite generous, especially with its robust Free tier offering 100M events monthly and a wide array of features.
The jump to the Pro tier at $280/month for 1B events is a reasonable step for growing teams, offering significant scalability. This pricing structure is best for startups and mid-sized companies looking for comprehensive observability without breaking the bank.
Hidden Costs & Gotchas
Unlimited events in Pro tier implies usage-based overages.
Cardinality quotas can lead to unexpected costs.
How Last9's pricing compares
At $280/mo, Last9 is the most premium of its 4 direct competitors.
Entry paid plan, monthly. Pricing checked Sep 18, 2026.
Reviews

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Last9 FAQ
How does Last9 help with incident triage and debugging?
What kind of user or team benefits most from Last9?
How does Last9 compare to Datadog regarding data sampling?
What are the main limitations to consider when adopting Last9?
How is Last9 priced?
Can Last9 integrate with existing observability tools and data sources?
How does Last9 manage telemetry data before storage?
Source: last9.io