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May 20, 2026

Enriched observations is the default for new blob storage exports

Niklas Semmler

New Langfuse Cloud projects export blob storage data as enriched observations. The legacy traces/observations sources stay available on existing projects and self-hosted deployments.

Blob storage integrations on Cloud projects created on or after 2026-05-20 use the Enriched observations source. The legacy Traces and observations and Traces and observations + Enriched observations sources are no longer selectable for these projects, in the UI or via the REST API.

What this means in practice:

• One row per observation, with trace context inlined — user_id, session_id, tags, release, trace_name, and environment ride along on the same row. No warehouse-side join needed.
• Per-column control — pair the source with field groups to keep just the columns your pipeline needs.
• Fewer files per window — only observations_v2/ and scores/, instead of traces/, observations/, and scores/.

Nothing changes for existing projects (Cloud or self-hosted) or self-hosted deployments: all three sources remain available. The legacy sources are still supported there for backwards compatibility, but the recommendation is the same — switch to Enriched observations when you're ready.

If a downstream consumer expects the legacy traces/ and observations/ file shapes, see the Export Field Reference for the column map between the two layouts.