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Head-to-head · Site Reliability Engineering Platforms

Pyrra vs Sloth

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Pyrra #7 in Site Reliability Engineering Platforms 7.5/10 Free plan Free plan✓ 3 of 5 features Visit Pyrra
Sloth #8 in Site Reliability Engineering Platforms 7.3/10 Open source ✓ 3 of 5 features Visit Sloth

Pyrra leads on 1 check, Sloth on 0, and 3 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scorePyrra · 7.5/10
  • Free planonly Pyrra

Pyrra scores higher on our rubric for site reliability engineering platforms: 7.5 against 7.3 out of 10; our editors rank them #7 and #8.

Pyrra offers free plan; Sloth doesn't publish it. On deployment model, Pyrra gives you Hybrid where Sloth offers Self_hosted.

Pyrra is the better fit for prometheus teams wanting open-source SLO dashboards. Sloth is the better fit for kubernetes teams managing SLOs declaratively.

  • Pyrra fits best

    Prometheus teams wanting open-source SLO dashboards

  • Sloth fits best

    Kubernetes teams managing SLOs declaratively

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.

Side by side

Feature Pyrra 7.5/10 Visit ↗ Sloth 7.3/10 Visit ↗
At a glance
Editor score 7.5 7.3
Ranking #7 in Site Reliability Engineering Platforms #8 in Site Reliability Engineering Platforms
Best for Prometheus teams wanting open-source SLO dashboards Kubernetes teams managing SLOs declaratively
Pricing model Free Free
Starting price Not published Not published
Free plan ✓ (best) Not published
Free trial — —
Deployment Cloud, Self-hosted Self-hosted
Support Community, Docs Docs, Community
Integrations 4 integrations 4 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Pyrra 3/5 · Sloth 3/5
SLO management ✓ ✓
Error-budget tracking ✓ ✓
Reliability scorecards Not published Not published
Workflow automation Not published Not published
SRE reporting ✓ ✓
Specs
Service limit Not published Not published
Deployment model Hybrid Self_hosted
Our review
Pros
  • Defines SLOs in Kubernetes resources or YAML files
  • Generates burn-rate recording rules and multi-window alerts
  • Shows error budgets and historical trends in Grafana dashboards
  • Generates recording rules, error-budget metrics, and multi-burn-rate alerts
  • Validates SLO specifications for GitOps and CI workflows
  • Supports Kubernetes CRDs, OpenSLO, Grafana, and plugins
Cons
  • Runs alongside a metrics backend rather than replacing one
  • Requires teams to operate Kubernetes, Docker, or filesystem configuration
  • Support is through community channels and documentation
  • Requires teams to operate it in a self-hosted environment
  • Focused on Prometheus-based monitoring rather than hosted observability
  • Support is through documentation and community
Our verdict

For teams managing services with Prometheus-compatible metrics, Pyrra provides an open-source way to define and track service-level objectives. SLOs can be declared in Kubernetes resources or YAML files; Pyrra then generates Prometheus…

Read the review →

Sloth is an open-source tool that generates Prometheus recording and alerting rules from declarative service-level objective specifications. It is aimed at teams that already operate Prometheus-based monitoring and want SLO definitions to…

Read the review →
  1. PyrraSite Reliability Engineering Platforms 7.5Free plan
  2. SlothSite Reliability Engineering Platforms 7.3Open source

Strengths and trade-offs

  • Pyrra — where it wins

    • Defines SLOs in Kubernetes resources or YAML files
    • Generates burn-rate recording rules and multi-window alerts
    • Shows error budgets and historical trends in Grafana dashboards

    Where it doesn't

    • Runs alongside a metrics backend rather than replacing one
    • Requires teams to operate Kubernetes, Docker, or filesystem configuration
    • Support is through community channels and documentation

  • Sloth — where it wins

    • Generates recording rules, error-budget metrics, and multi-burn-rate alerts
    • Validates SLO specifications for GitOps and CI workflows
    • Supports Kubernetes CRDs, OpenSLO, Grafana, and plugins

    Where it doesn't

    • Requires teams to operate it in a self-hosted environment
    • Focused on Prometheus-based monitoring rather than hosted observability
    • Support is through documentation and community
  • Pyrra7.5/10 · Free plan

    A focused, open-source SLO tool for teams already running Prometheus-compatible metrics.

    Visit PyrraFull verdict →
  • Sloth7.3/10 · Open source

    A self-hosted tool for turning declarative SLOs into Prometheus rules and dashboards.

    Visit SlothFull verdict →

More comparisons

All site reliability engineering platforms comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update