Langfuse Files

What's Changed

Features

• feat: add model name filter for observation widgets by @marcklingen in https://github.com/langfuse/langfuse/pull/11014
• feat: add update_parallel_mode CH option passthrough by @sumerman in https://github.com/langfuse/langfuse/pull/11034
• feat(datasets): batch add observations to dataset by @hassiebp in https://github.com/langfuse/langfuse/pull/10997
• feat: introducing a single-level SELECt optimization in queryBuilder. by @sumerman in https://github.com/langfuse/langfuse/pull/11060
• feat(model-prices): add gpt-5.2 by @hassiebp in https://github.com/langfuse/langfuse/pull/11083
• feat: add dataset_item_version column to dataset_run_items_rmt and events table by @marliessophie in https://github.com/langfuse/langfuse/pull/11033
• feat(llm): add Application Default Credentials support for Vertex AI by @hassiebp in https://github.com/langfuse/langfuse/pull/11039

Fixes / Improvements

• perf: remove data intensive debug logs in eval filters by @Steffen911 in https://github.com/langfuse/langfuse/pull/11024
• fix: new users should see /onboarding by @marcklingen in https://github.com/langfuse/langfuse/pull/11038
• fix(batch-add-to-dataset): improve formatting by @hassiebp in https://github.com/langfuse/langfuse/pull/11040
• fix: tags and release should now be defined on event-traces aggregation by @sumerman in https://github.com/langfuse/langfuse/pull/11067
• fix(evals): allow creating new evaluators for haiku 4.5 by @hassiebp in https://github.com/langfuse/langfuse/pull/11100
• fix(dataset-versioning): single item read to filter for status correctly by @marliessophie in https://github.com/langfuse/langfuse/pull/11095
• fix(trace): show prompt badge on observations again by @nimarb in https://github.com/langfuse/langfuse/pull/11102
• fix(dataset-items): update metadata filter to be case-insensitive by @marliessophie in https://github.com/langfuse/langfuse/pull/11088

Chores

• chore: the first crops of fixed for issues found by fastcheck by @sumerman in https://github.com/langfuse/langfuse/pull/11027
• chore: add events table to the mutation monitor by @sumerman in https://github.com/langfuse/langfuse/pull/11029
• chore: cache CI more agressively by @nimarb in https://github.com/langfuse/langfuse/pull/11012
• chore: limit trace backfill matching to same partition by @Steffen911 in https://github.com/langfuse/langfuse/pull/11007
• chore(dataset-versioning): add unique idx on [id, project_id, valid_from] by @marliessophie in https://github.com/langfuse/langfuse/pull/10944
• chore(dataset-versioning): READ path by @marliessophie in https://github.com/langfuse/langfuse/pull/10845
• style: update styles for TableLink, IOTableCell and Sidebar components by @marliessophie in https://github.com/langfuse/langfuse/pull/11058
• chore(dataset-items): experiment service by @marliessophie in https://github.com/langfuse/langfuse/pull/11062
• perf(trace-deletions): remove actual deletions from batch action queue by @hassiebp in https://github.com/langfuse/langfuse/pull/11057
• chore: bump form-data by @hassiebp in https://github.com/langfuse/langfuse/pull/11065
• chore(dataset-versioning): WRITE path by @marliessophie in https://github.com/langfuse/langfuse/pull/10885
• chore(dataset-schema-mapping-card): rename Output -> Expected Output by @marliessophie in https://github.com/langfuse/langfuse/pull/11072
• chore(dataset-versioning): extend test suite to new data model by @marliessophie in https://github.com/langfuse/langfuse/pull/11063
• chore(table-link): fix alignment by @marliessophie in https://github.com/langfuse/langfuse/pull/11074
• chore: bump next to 15.5.9 by @hassiebp in https://github.com/langfuse/langfuse/pull/11080
• chore: query dataset_item_version in experiment backfill script by @Steffen911 in https://github.com/langfuse/langfuse/pull/11085
• chore: fixing flaky observations-api-v2 test. third time's a charm? by @sumerman in https://github.com/langfuse/langfuse/pull/11086
• chore(ui): simplify class names in DatasetRunsTable and FolderBreadcrumbLink components by @marliessophie in https://github.com/langfuse/langfuse/pull/11087
• chore: read from versioned implementation by @marliessophie in https://github.com/langfuse/langfuse/pull/11056
• Revert "chore: read from versioned implementation" by @marliessophie in https://github.com/langfuse/langfuse/pull/11097
• chore(dataset-versioning): read from versioned implementation by @marliessophie in https://github.com/langfuse/langfuse/pull/11110
• chore(dataset-versioning): remove 'ACTIVE' status filter from dataset item count queries by @marliessophie in https://github.com/langfuse/langfuse/pull/11092
• chore(dataset-versioning): switch pk by @marliessophie in https://github.com/langfuse/langfuse/pull/10982
• chore(dataset-versioning): write in new dataset versioning schema by @marliessophie in https://github.com/langfuse/langfuse/pull/11091
• chore: upgrade react to 19.2.3 / next 15.5.9 by @nimarb in https://github.com/langfuse/langfuse/pull/11076
• chore(batch-export): allow canceling jobs from ui by @marliessophie in https://github.com/langfuse/langfuse/pull/10844

Full Changelog: https://github.com/langfuse/langfuse/compare/v3.139.0...v3.140.0