Cloud · head to head
OpenTelemetry vs Ory Kratos
OpenTelemetry
Cloud
Vendor-neutral standard for traces, metrics and logs
- From
- Free
- Rated
- -
The short version
- Each has a real cost: OpenTelemetry genuinely complex to adopt: collectors, pipelines, samplers and exporters are a system to run in their own right; Ory Kratos headless means you build every screen, which is significant work compared with a hosted login page
- They diverge on capability: OpenTelemetry covers Vendor-neutral SDKs, Ory Kratos covers Headless API.
- Prices and features above were last checked on 29 August 2026.
Where they differ
Only the attributes on which OpenTelemetry and Ory Kratos actually diverge.
| Attribute | OpenTelemetry | Ory Kratos |
|---|---|---|
| Pricing model | Open source, no licence fee | Open-source self-hosted, with a paid managed network |
| Platforms | Linux, macOS, Windows, Kubernetes, Docker | Linux, Docker, Kubernetes, Self-hosted |
| Category | Cloud | Cybersecurity |
Identical on both: starting price (Free), free tier (Yes), 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 OpenTelemetry
- Vendor-neutral SDKs
- Collector
- Three signals
- Auto-instrumentation
Only in Ory Kratos
- Headless API
- Self-service flows
- Multi-factor authentication
- Pluggable identity schemas
What people use each for
The jobs each tool is most often brought in to do.
OpenTelemetry
- Instrumenting once and keeping the option to change observability vendor laternot Ory Kratos
- Standardising telemetry across services written in different languagesnot Ory Kratos
- Routing and filtering telemetry centrally to control observability spendnot Ory Kratos
Ory Kratos
- Products needing complete control over the look and flow of authenticationnot OpenTelemetry
- Applications that must not hand user identity data to a third partynot OpenTelemetry
- Teams building identity as infrastructure across several servicesnot OpenTelemetry
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
OpenTelemetry
- Genuinely complex to adopt: collectors, pipelines, samplers and exporters are a system to run in their own right
- Language SDKs mature at different rates, so a polyglot estate gets uneven support
- It produces and moves telemetry but does not store or visualise it, so a backend is still required and still billed
Ory Kratos
- Headless means you build every screen, which is significant work compared with a hosted login page
- More moving parts than a monolithic IAM: Kratos handles identity, and OAuth2 needs Ory Hydra alongside
- Documentation assumes real familiarity with identity concepts and is not a gentle introduction
- Self-hosting identity carries the security and availability burden that hosted providers absorb
Pricing, plan by plan
OpenTelemetry
Free- OpenTelemetryFree
- Full functionality
- No usage limits
- Community support
Ory Kratos
Free- Self-hostedFree
- Full identity server
- All flows
- Community support
Which should you pick?
Choose OpenTelemetry if
- You need vendor-neutral sdks.
- You want to start without paying.
- You work on Linux, macOS, Windows, Kubernetes, Docker.
- You also want collector.
Choose Ory Kratos if
- You need headless api.
- You want to start without paying.
- You work on Linux, Docker, Kubernetes, Self-hosted.
- You also want self-service flows.
Questions people ask
- Is OpenTelemetry or Ory Kratos better?
- Neither clearly leads. OpenTelemetry starts at Free and Ory Kratos at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, OpenTelemetry or Ory Kratos?
- OpenTelemetry starts at Free and Ory Kratos at Free.
- Does OpenTelemetry or Ory Kratos run on more platforms?
- OpenTelemetry runs on Linux, macOS, Windows, Kubernetes, Docker. Ory Kratos runs on Linux, Docker, Kubernetes, Self-hosted.
- Can I use OpenTelemetry for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is OpenTelemetry best used for?
- OpenTelemetry is most often used for instrumenting once and keeping the option to change observability vendor later, standardising telemetry across services written in different languages, routing and filtering telemetry centrally to control observability spend. Of those, instrumenting once and keeping the option to change observability vendor later and standardising telemetry across services written in different languages are not what Ory Kratos is typically brought in for.
- What can OpenTelemetry do that Ory Kratos cannot?
- OpenTelemetry covers Vendor-neutral SDKs, Collector, Three signals, Auto-instrumentation. Ory Kratos covers Headless API, Self-service flows, Multi-factor authentication, Pluggable identity schemas.
Answered from the vendors’ own pages
OpenTelemetry: Is OpenTelemetry free?
Yes, open source under the CNCF. What you pay for is the backend you export to.
Ory Kratos: Is Ory Kratos free?
Yes, open source and free to self-host. Ory Network is a paid managed service.
OpenTelemetry: Does OpenTelemetry replace Datadog or Grafana?
No. It replaces their proprietary agents and instrumentation libraries. You still need a backend to store and query the data.
Ory Kratos: What does headless mean here?
Kratos provides identity flows as APIs and no user interface. You build the login, registration and recovery screens yourself.
OpenTelemetry: Why adopt a vendor-neutral standard?
Because instrumentation is the expensive part. Once code emits OTel, changing observability vendor is a collector config change instead of re-instrumenting every service.
Ory Kratos: Does Kratos do OAuth2?
No. Kratos handles user identity; OAuth2 and OpenID Connect provider functionality is Ory Hydra, a separate component.
Related pages
More on OpenTelemetry
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