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PyPI · #706 most downloaded on PyPI
Langfuse Python SDK - LLM observability/tracing, datasets, experiments, LLM-as-a-judge evaluation, and prompt management
Last release 4 days ago
30 Sep 2026
Ships on a steady schedule
a new release about every 2 weeks
Nearly every release is documented
notes for 60 of the last 60 stable releases
3 versions withdrawn
withdrawn after publishing
3 years old
554 releases · first in 2023
One column per quarter.
fix(fern): support new fern client name by @maxdeichmann in https://github.com/langfuse/langfuse-python/pull/230
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.13.2...v1.13.3
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fix(api): correctly serialize pydantic models by @maxdeichmann in https://github.com/langfuse/langfuse-python/pull/229
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.13.1...v1.13.2
feat: Make langchain optional by @hubert-springbok in https://github.com/langfuse/langfuse-python/pull/214
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.13.0...v1.13.1
feat: set default None values for Pydantic models by @maxdeichmann in https://github.com/langfuse/langfuse-python/pull/213
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.12.0...v1.13.0
feat: add get_trace(id) by @marcklingen in https://github.com/langfuse/langfuse-python/pull/212
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.11.0...v1.12.0
feat: set public param on traces by @marcklingen in https://github.com/langfuse/langfuse-python/pull/210
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.10.0...v1.11.0
feat(core): start times created automatically on {.generation, .span, .event}, .end methods take optional body by @maxdeichmann in https://github.com/
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.9.3...v1.10.0
fix(core): allows setting the start_date on update methods by @maxdeichmann in https://github.com/langfuse/langfuse-python/pull/205
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.9.2...v1.9.3
feat(integrations): add auth check to openai and langchain by @maxdeichmann in https://github.com/langfuse/langfuse-python/pull/199
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.9.1...v1.9.2
Nothing published for this version
fix(api): fix warning level log commit
feature(core): add auth check api by @maxdeichmann in https://github.com/langfuse/langfuse-python/pull/198
This release requires the following server release: https://github.com/langfuse/langfuse/releases/tag/v1.7.0
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.8.2...v1.9.0
fix(openai): support async azure client by @maxdeichmann in https://github.com/langfuse/langfuse-python/pull/195
Full Changelog: https://github.com/langfuse/langfuse-python/compare/v1.8.0...v1.8.2
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