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Stabilize Prometheus Classic Histogram -> OTLP Explicit Histogram #4874

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Stabilize Prometheus Classic Histogram -> OTLP Explicit Histogram #4874

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3 changes: 3 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -44,6 +44,9 @@ release.

### Compatibility

- Stabilize Prometheus Classic Histogram to OTLP Explicit Histogram transformation.
([#4874](https://github.com/open-telemetry/opentelemetry-specification/pull/4874))

### SDK Configuration

- Declarative configuration: rename `ComponentProvider` to
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4 changes: 2 additions & 2 deletions specification/compatibility/prometheus_and_openmetrics.md
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Expand Up @@ -137,9 +137,9 @@ A [Prometheus Unknown](https://prometheus.io/docs/instrumenting/exposition_forma

### Histograms

**Status**: [Development](../document-status.md)
**Status**: [Stable](../document-status.md)

A [Prometheus Histogram](https://prometheus.io/docs/instrumenting/exposition_formats/#basic-info) MUST be converted to an OTLP Histogram.
A [Prometheus Histogram](https://github.com/prometheus/OpenMetrics/blob/v1.0.0/specification/OpenMetrics.md#histogram) MUST be converted to an OTLP Histogram.
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@ArthurSens ArthurSens Feb 4, 2026

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Suggested change
A [Prometheus Histogram](https://github.com/prometheus/OpenMetrics/blob/v1.0.0/specification/OpenMetrics.md#histogram) MUST be converted to an OTLP Histogram.
A [Prometheus Histogram](https://github.com/prometheus/OpenMetrics/blob/v1.0.0/specification/OpenMetrics.md#histogram) MUST be converted to an OTLP Explicit Histogram.

I'm wondering if I should be very specific here 🤔


Multiple Prometheus histogram metrics MUST be merged together into a single OTLP Histogram:

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