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PyPI · #3218 most downloaded on PyPI
Building applications with LLMs through composability
Last release 4 months ago
22 May 2026
Ships unpredictably
gaps range from 1 weeks to 9 months
Rarely documented
notes for 7 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
3 years old
79 releases · first in 2023
One column per quarter.
security: add explicit workflow permissions to all GitHub Actions workflows by John Kennedy (@jkennedyvz) in #74
Full Changelog: libs/experimental/v0.4.1...libs/experimental/v0.4.2
Security fix: Block PALChain code execution bypasses (CVE-2025-61422, CVE-2025-61423) by YuvalSarel1 in #68
Full Changelog: libs/experimental/v0.4.0...libs/experimental/v0.4.1
Extract sentence splitting in SemanticChunker into a private method by Levara in #30
Full Changelog: libs/experimental/v0.3.4...libs/experimental/v0.4.0
Extract sentence splitting in SemanticChunker into a private method by Levara in #30
Full Changelog: libs/experimental/v0.3.4...libs/experimental/v0.3.5rc1
infra: use artifact v4 in release pipeline by Erick Friis (@efriis) in #15
Full Changelog: libs/experimental/v0.3.3...libs/experimental/v0.3.4
update v0.2 to latest docs links by Erick Friis (@efriis) in #6
Full Changelog: libs/experimental/v0.3.2...libs/experimental/v0.3.3
semantic-chunker: add min_chunk_size by Tibor Reiss (@tibor-reiss) in #4
Full Changelog: libs/experimental/v0.3.1.post1...libs/experimental/v0.3.2
migrate Experimental by Erick Friis (@efriis) in #1
Full Changelog: https://github.com/langchain-ai/langchain-experimental/commits/libs/experimental/v0.3.1.post1
Note you can see prior release notes here: https://github.com/langchain-ai/langchain/releases?q=tag:%22langchain-experimental%3D%3D0%22&expanded=true
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