What is the latest version of langchain-core?

The latest version of langchain-core is 1.6.0, published August 2026.

What license is langchain-core under?

langchain-core declares MIT as its top-level declared license. Its dependency tree spans 10 distinct licenses.

Does langchain-core have known vulnerabilities?

No known CVEs are recorded against published versions of langchain-core.

How do I install langchain-core?

Install langchain-core with pip install langchain-core.

How do I generate an SBOM that includes langchain-core?

FOSSA's SBOM generator produces SPDX or CycloneDX output for a codebase that includes langchain-core.

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langchain-core

PyPI

v1.6.0 · Aug 2026 · MIT (top-level declared license)

pip install langchain-core

No known CVEs
169.5M downloads/mo
301 versions

Description

The agent engineering platform.

Licenses

Declared license

MIT (top-level declared license of langchain-core)

Transitive dependency licenses

This package's dependency tree includes MPL-2.0 and 1 other copyleft license. MPL-2.0 may require you to publish changes to that component when you distribute.

License	Category	Dependencies
MIT	Permissive	11 of 29
BSD-3-Clause	Permissive	6 of 29
Apache-2.0	Permissive	4 of 29
non-standard	Unknown	2 of 29
Apache-2.0 OR BSD-2-Clause	Permissive	1 of 29
Apache-2.0 OR MIT	Permissive	1 of 29
BSD-2-Clause	Permissive	1 of 29
PSF-2.0	Permissive	1 of 29
MPL-2.0	Weak copyleft	1 of 29
MPL-2.0 AND (Apache-2.0 OR MIT)	Weak copyleft	1 of 29

This view is derived from declared package metadata, and a full FOSSA scan detects licenses that declared metadata misses. Scan free.

License and vulnerability information on this page is derived from public package metadata and public advisory databases. It is not legal advice, and it reflects the top-level declared license only. Verify the license and terms of any software for your own needs.

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Vulnerabilities

No known CVEs across published versions

Version history

Published versions
Version	Published	License
1.6.0	Aug 2026	MIT
1.5.6	Aug 2026
1.5.5	Aug 2026
1.5.4	Aug 2026
1.5.3	Jul 2026
1.5.2	Jul 2026
1.5.1	Jul 2026
1.5.0	Jul 2026
1.4.9	Jul 2026
1.4.8	Jun 2026
1.4.7	Jun 2026
1.4.6	Jun 2026
1.4.5	Jun 2026
1.4.4	Jun 2026
1.4.3	Jun 2026
1.4.2	Jun 2026
1.4.1	Jun 2026
1.4.0	May 2026
0.3.86	May 2026
0.3.85	May 2026
1.3.3	May 2026
1.3.2	Apr 2026
1.3.1	Apr 2026
1.3.0	Apr 2026
1.2.31	Apr 2026

25 older releases

Older published versions
Version	Published	License
1.2.30	Apr 2026
1.2.29	Apr 2026
0.3.84	Apr 2026
1.2.28	Apr 2026
1.2.27	Apr 2026
1.2.26	Apr 2026
1.2.25	Apr 2026
1.2.24	Apr 2026
1.2.23	Mar 2026
1.2.22	Mar 2026
1.2.21	Mar 2026
1.2.20	Mar 2026
1.2.19	Mar 2026
1.2.18	Mar 2026
1.2.17	Mar 2026
1.2.16	Feb 2026
1.2.15	Feb 2026
1.2.14	Feb 2026
1.2.13	Feb 2026
1.2.12	Feb 2026
1.2.11	Feb 2026
1.2.10	Feb 2026
1.2.9	Feb 2026
1.2.8	Feb 2026
0.3.83	Jan 2026

Latest pre-release: 1.4.0a2 (May 2026). Pre-releases (canary, beta, release candidate and similar) are not listed.

pip install langchain-core resolves to the 1.x line today. Older major lines may still receive fixes.

Dependencies

Direct dependencies

10 direct dependencies, 29 in total including transitive. Licenses across the full tree are summarized under Licenses.

Direct dependencies
Package	Version range	License
httpx	<1.0.0,>=0.23.0	BSD-3-Clause
jsonpatch	<2.0.0,>=1.33.0	Unresolved in metadata
langchain-protocol	>=0.0.17	MIT
langsmith	<1.0.0,>=0.3.45	MIT
packaging	>=23.2.0	Apache-2.0 OR BSD-2-Clause
pydantic	<3.0.0,>=2.7.4	MIT
pyyaml	<7.0.0,>=5.3.0	MIT
tenacity	!=8.4.0,<10.0.0,>=8.1.0	Apache-2.0
typing-extensions	<5.0.0,>=4.7.0	PSF-2.0
uuid-utils	<1.0,>=0.12.0	BSD-3-Clause

Dependents

langchain
langgraph
langchain-openai

Based on what each package declares in its published metadata. The dependencies your build actually installs can differ, and a FOSSA scan of your project resolves the full tree.

Popularity

Downloads last month: 169.5M
Known dependents in this corpus: 5,660
GitHub stars: 144.8k
OpenSSF score: 5.9 / 10

FAQ

What is the latest version of langchain-core?: The latest version of langchain-core is 1.6.0, published August 2026.
What license is langchain-core under?: langchain-core declares MIT as its top-level declared license. Its dependency tree spans 10 distinct licenses.
Does langchain-core have known vulnerabilities?: No known CVEs are recorded against published versions of langchain-core.
How do I install langchain-core?: Install langchain-core with pip install langchain-core.
How do I generate an SBOM that includes langchain-core?: FOSSA's SBOM generator produces SPDX or CycloneDX output for a codebase that includes langchain-core. Generate an SPDX or CycloneDX SBOM free.