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OpenTelemetry

Vendor-neutral standard for traces, metrics and logs

Overview

What OpenTelemetry does

OpenTelemetry is a vendor-neutral standard and toolkit for generating traces, metrics and logs. It exists to solve a specific commercial problem: instrumentation used to be written against a vendor’s agent, so changing observability provider meant re-instrumenting every service. OpenTelemetry separates the two. Applications emit data through OTel SDKs, a collector receives and processes it, and exporters send it wherever you choose — Datadog, Grafana, Honeycomb, New Relic or a self-hosted stack. Switching backend becomes a collector configuration change rather than a code migration. It is the second most active CNCF project after Kubernetes.

What people use it 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

The honest half

Where it falls short

Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about 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

Cross-shopped

What people choose instead of OpenTelemetry

Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.

  • OpenTelemetry logo
    OpenTelemetry
    vs
    Datadog logo
    Datadog

    Datadog: A full commercial platform that now ingests OpenTelemetry data, trading neutrality for a finished product

  • OpenTelemetry logo
    OpenTelemetry
    vs
    Grafana logo
    Grafana

    Grafana: The open-source visualisation layer commonly paired with OpenTelemetry rather than competing with it

Pricing

What OpenTelemetry costs

Taken from the vendor's own pricing page. Prices move, so check before you buy.

OpenTelemetry

Free

  • Full functionality
  • No usage limits
  • Community support

Capabilities

Features

  • Vendor-neutral SDKs

    Instrument once and export to any supported backend

  • Collector

    Receives, batches, filters and routes telemetry independent of the application

  • Three signals

    Traces, metrics and logs under one specification

  • Auto-instrumentation

    Agents that instrument common frameworks without code changes

Answered, with sources

Questions people ask

Each answer names the page it came from, so you can check it rather than take our word for it.

Is OpenTelemetry free?

Yes, open source under the CNCF. What you pay for is the backend you export to.

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.

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.

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Where to go from OpenTelemetry

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Softwr does not host reviews and shows no star rating for OpenTelemetry, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.

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