Published by SteadyNines · last reviewed 2026-11-03
The best SLO tools in 2026, compared
An honest roundup, updated every quarter. SLO tools fall into four groups: dedicated SLO platforms, SLO features in observability suites, open-source rule generators, and pre-breach SLO management.
At a glance.
| Tool | Type | Best for |
|---|---|---|
| SteadyNines | Pre-breach SLO management | Keeping SLOs met, with action across ops and code |
| Nobl9 | Dedicated SLO platform | SLO governance and reporting across many sources |
| Datadog SLOs | Observability suite | Datadog-centred teams |
| Dynatrace | Observability suite | Large enterprises on Dynatrace |
| Grafana SLO | Observability suite | Teams on the Grafana stack |
| New Relic service levels | Observability suite | New Relic users |
| Honeycomb SLOs | Observability suite | Event-based, high-cardinality debugging |
| Google Cloud SLO monitoring | Cloud-native | Workloads on Google Cloud |
| Sloth | Open source | Generating Prometheus SLO rules |
| Pyrra | Open source | Kubernetes and Prometheus SLOs with a UI |
01 / 10 · Pre-breach SLO management
SteadyNines
- What it does well
- Acts on burn rate before breach: traces the cause on a Context Graph, proposes an approved operational fix, drafts the code fix in the IDE and learns from each situation.
- How it’s priced
- Annual subscription by estate under management; every plan starts with a pilot on one SLO.
- Who should pick it
- Teams that want SLOs kept rather than reported, across operations and code.
02 / 10 · Dedicated SLO platform
Nobl9
- What it does well
- Mature SLO definition, governance and reporting across many telemetry sources, with error budget policies and composite SLOs.
- How it’s priced
- Subscription, tiered by SLO count and data sources.
- Who should pick it
- Platform teams standardising SLOs across many teams and tools.
03 / 10 · Observability suite
Datadog SLOs
- What it does well
- SLOs built directly on Datadog metrics and monitors, with burn-rate alerts and dashboards in the same product.
- How it’s priced
- Included with Datadog; costs follow the underlying metrics and monitors.
- Who should pick it
- Teams whose telemetry already lives in Datadog.
04 / 10 · Observability suite
Dynatrace
- What it does well
- SLOs on Dynatrace-observed services with its causal AI for root-cause context.
- How it’s priced
- Consumption-based Dynatrace licensing.
- Who should pick it
- Large enterprises standardised on Dynatrace.
05 / 10 · Observability suite
Grafana SLO
- What it does well
- SLO definitions that generate Prometheus recording and alerting rules, visualised in Grafana.
- How it’s priced
- Part of Grafana Cloud plans.
- Who should pick it
- Teams on Prometheus and Grafana who want SLOs without extra tooling.
06 / 10 · Observability suite
New Relic service levels
- What it does well
- Service level management on New Relic data with error budget and burn-rate views.
- How it’s priced
- Included with New Relic; usage-based data pricing.
- Who should pick it
- New Relic users wanting SLOs in place.
07 / 10 · Observability suite
Honeycomb SLOs
- What it does well
- SLOs over high-cardinality events, with burn alerts that link straight to the traces behind them.
- How it’s priced
- Available on Honeycomb paid plans.
- Who should pick it
- Teams debugging with events and traces rather than metrics.
08 / 10 · Cloud-native
Google Cloud SLO monitoring
- What it does well
- SLOs, error budgets and burn-rate alerting for services on Google Cloud, in Cloud Monitoring.
- How it’s priced
- Part of Google Cloud Monitoring pricing.
- Who should pick it
- Workloads that run on Google Cloud.
09 / 10 · Open source
Sloth
- What it does well
- Open-source generator that turns simple SLO specs into Prometheus multi-window burn-rate rules.
- How it’s priced
- Free, open source.
- Who should pick it
- Prometheus users who want standard SLO rules without a platform.
10 / 10 · Open source
Pyrra
- What it does well
- Open-source SLOs for Kubernetes and Prometheus with a UI for error budgets and burn.
- How it’s priced
- Free, open source.
- Who should pick it
- Kubernetes teams who want a lightweight SLO UI.
Questions
What is the best SLO tool?
It depends on the job. For SLO governance and reporting across many sources, a dedicated SLO platform such as Nobl9. For SLOs inside the tool you already use, your observability suite. For keeping SLOs met by acting on burn rate, pre-breach SLO management such as SteadyNines.
Are there free SLO tools?
Yes. Sloth and Pyrra are open source and generate Prometheus SLO rules; Pyrra adds a UI for error budgets and burn.
What is the difference between an SLO platform and pre-breach SLO management?
An SLO platform measures SLOs and alerts when burn crosses a threshold. Pre-breach SLO management acts on that burn: it finds the cause, stops the burn with an approved action, and fixes the cause in code.