opentelemetry-rust 0.33.1: OTLP Log and Metric Exporters Go Stable

opentelemetry-rust shipped version 0.33.1 on October 9, 2026. The headline change is short and significant: the OTLP exporters for Logs and Metrics are now stable. No more beta caveats on two of the three OTLP signals in Rust.

The full release notes and downloads are on the GitHub release page.

The main change: OTLP Log and Metric exporters are stable

The release notes say it in one line: “The OTLP exporters for Logs and Metrics are now stable.” In practice, this means the maintainers consider both exporters ready for production use without the prerelease disclaimer. If you have been holding off on shipping logs or metrics through OTLP from Rust because of stability warnings, this release is the signal to revisit that decision.

What this release does not contain

This is a small, focused release. The notes do not list bug fixes, performance work, or API changes beyond the stability declaration. If you were hoping for a batch of patches, 0.33.1 is not that release. I would treat it as a milestone marker rather than a maintenance drop.

It is also not a prerelease. If you pin dependencies in CI, the usual upgrade path applies with no extra steps mentioned in the notes.

Why the stability flag matters

Stability declarations change how teams treat a dependency. When the Logs and Metrics OTLP exporters were unstable, pinning them behind feature flags or extra review was a reasonable precaution. With the stable label, upgrading to 0.33.1 gives you an officially supported path for emitting logs and metrics alongside traces, which reached stability earlier in the project. That closes the loop on the OTLP signal coverage in Rust.

If you run OpenTelemetry collectors in front of your Rust services, nothing changes on the wire protocol. The change is about maturity guarantees, not configuration. Your existing exporter setup, endpoints, and headers carry over.

Upgrade notes

The release notes mention no breaking changes and no migration steps for this version. If you are already on the 0.33.x line, a bump to 0.33.1 should be routine. If you come from an older major line, check the project changelog for earlier API changes before upgrading.

Where to get it

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