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Machine Learning · head to head

Langwatch vs Rootly

Langwatch logo

Langwatch

Machine Learning

LLM engineering platform for testing and evaluating AI agents in production

From
Free
Rated
-
Full reviewWebsite
Rootly logo

Rootly

Logging

AI-native incident management with automation, on-call, and root cause analysis

From
$20/user-month
Rated
-
Full reviewWebsite

The short version

  • Only Langwatch has a free tier, so it costs nothing to try first.
  • Each has a real cost: Langwatch free plan limited to 50k events per month, restricting larger deployments; Rootly pricing higher than some competitors for basic features
  • They diverge on capability: Langwatch covers Agent simulation testing, Rootly covers AI SRE automation.

Where they differ

Only the attributes on which Langwatch and Rootly actually diverge.

Attributes where Langwatch and Rootly differ
AttributeLangwatchRootly
Starting priceFree$20/user-month
Pricing modelTiered subscription with usage-based overage chargessubscription
Free tierYesNo
PlatformsWeb, Docker, KubernetesWeb, Mobile, Slack, Microsoft Teams
CategoryMachine LearningLogging
FoundedUnknown2020

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Langwatch

  • Agent simulation testing
  • LLM evaluation
  • OpenTelemetry tracing
  • Langy AI Engineer
  • Governance controls
  • Multiple deployment options
  • Framework support

Only in Rootly

  • AI SRE automation
  • Alert routing
  • On-call management
  • Incident response
  • Call routing
  • AI meeting bot
  • Status pages

What people use each for

The jobs each tool is most often brought in to do.

Langwatch

  • Continuous testing of AI agents before production deploymentnot Rootly
  • Automated test creation from product requirementsnot Rootly
  • LLM response quality evaluation and scoringnot Rootly
  • Production agent monitoring and cost trackingnot Rootly
  • Governance and access control for AI systemsnot Rootly

Rootly

  • Automate on-call and incident response workflowsnot Langwatch
  • Run root cause analysis with AI assistancenot Langwatch
  • Track and improve Mean Time to Mitigation (MTTR)not Langwatch
  • Coordinate response across distributed teamsnot Langwatch
  • Learn from post-incident retrospectivesnot Langwatch

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Langwatch

  • Free plan limited to 50k events per month, restricting larger deployments
  • Pricing in EUR may complicate budgeting for US-based teams
  • Usage-based overage model can create unpredictable costs
  • Self-hosted option requires DevOps expertise

Rootly

  • Pricing higher than some competitors for basic features
  • AI SRE features require separate contact-sales engagement
  • Learning curve for advanced automation features
  • Per-user pricing increases costs as team grows

Pricing, plan by plan

Langwatch

Free
  • DeveloperFree
    • 50k events per month
    • 14-day data access
    • 2 users
  • Growth$29/month
    • 200k events per month included
    • 5 EUR per 100k additional events
    • 30-day data retention
  • Enterprise$undefined/custom
    • Custom event limits
    • Hybrid, self-hosted or on-premises deployment
    • Custom SSO and RBAC

Rootly

$20/user-month
  • Incident Response Essentials$20/user-month
    • Response with Slack integration
    • @Rootly AI Chat
    • AI Similar Incidents detection
  • Incident Response Enterprise$undefined/custom
    • All Essentials features
    • Custom forms and incident types
    • Private incidents
  • On-Call Essentials$20/user-month
    • Alert grouping and routing
    • Live call routing (1 phone number)
    • Schedules and escalation policies
  • On-Call Enterprise$undefined/custom
    • All Essentials features
    • 5 phone numbers for call routing
    • Unlimited schedules

Which should you pick?

Choose Langwatch if

  • You need agent simulation testing.
  • You want to start without paying.
  • You work on Web, Docker, Kubernetes.
  • You also want llm evaluation.
Langwatch review

Choose Rootly if

  • You need ai sre automation.
  • You work on Web, Mobile, Slack, Microsoft Teams.
  • You also want alert routing.
Rootly review

Questions people ask

Is Langwatch or Rootly better?
Neither clearly leads. Langwatch starts at Free and Rootly at $20/user-month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Langwatch or Rootly?
Langwatch has a free tier; the other does not. Paid plans start at Free for Langwatch and $20/user-month for Rootly.
Does Langwatch or Rootly run on more platforms?
Langwatch runs on Web, Docker, Kubernetes. Rootly runs on Web, Mobile, Slack, Microsoft Teams.
Can I use Langwatch for free?
Yes. Langwatch has a free tier, so you can try it without paying. Rootly starts at $20/user-month.
What is Langwatch best used for?
Langwatch is most often used for continuous testing of ai agents before production deployment, automated test creation from product requirements, llm response quality evaluation and scoring, production agent monitoring and cost tracking. Of those, continuous testing of ai agents before production deployment and automated test creation from product requirements are not what Rootly is typically brought in for.
What can Langwatch do that Rootly cannot?
Langwatch covers Agent simulation testing, LLM evaluation, OpenTelemetry tracing, Langy AI Engineer. Rootly covers AI SRE automation, Alert routing, On-call management, Incident response.

Answered from the vendors’ own pages

Langwatch: Is there a permanent free tier?

Yes, Langwatch's Developer plan is free forever with 50k events per month, 14-day data access, 2 users, and no credit card required. It is specifically designed for individual developers prototyping AI applications.

Source
Rootly: How much does Rootly cost?

Rootly charges $20/user/month for both Incident Response and On-Call Essentials plans. Enterprise plans require contacting sales. Startups under 100 employees with less than $50M raised get up to 50% discount.

Source
Langwatch: What is Langy and how does it save time?

Langy is an AI-powered tool that automates test creation. It converts product requirements into test scenarios, runs simulations, scores results, and generates pull requests with fixes in a median of 14 minutes.

Source
Rootly: What is Rootly AI SRE?

AI SRE is an advanced feature that provides automated root cause analysis, alert correlation with system changes, impact analysis, and remediation suggestions. Pricing requires contact with sales.

Source
Langwatch: What frameworks does Langwatch support?

Langwatch works with LangGraph, LangChain, CrewAI, OpenAI Agents, AWS Bedrock, Azure OpenAI, Vertex AI, and other major LLM frameworks and platforms.

Source
Rootly: Does Rootly integrate with Slack?

Yes, Rootly natively integrates with Slack for incident response workflows, allowing teams to manage incidents directly in Slack.

Source
Rootly: Are there discounts for small companies?

Yes, startups under 100 employees or less than 25 employees can get special pricing up to 50% discount. Contact Rootly sales for details.

Source
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