LangChain

This release focuses on improving summarization logic by leveraging usage metadata and fixing tool call pairings, alongside a provider mapping fix for Azure OpenAI.

LangChain 1.2.2 is a patch release focused on fixing parallel tool usage in planning middleware and improving internal test type safety.

This release focuses on bug fixes for the OpenAI integration, specifically improving error handling for structured output refusals and refining token counting logic for function calls.

This release focuses on bug fixes for message summarization and tool schemas, adds Google GenAI support to embeddings, and introduces several linting and type-checking improvements.

Version 1.3.1 is a maintenance release that addresses a security vulnerability (CVE-2025-68664) and fixes several bugs related to cache control and serialization.

Version 1.2.1 of langchain-xai fixes a bug in token usage reporting by ensuring reasoning tokens are included in the total output count.

This release focuses on internal performance optimizations, improved type safety, and bug fixes for ChatPromptTemplate and CallbackManager. It also updates internal tooling and documentation to reflect beta statuses and Pydantic v2 compatibility.

This release updates langchain-xai to 1.2.0 and langchain-openai to 1.1.6, focusing on streaming improvements, token counting fixes for GPT-5, and core serialization patches.

This release includes a critical serialization fix for langchain-core and internal code style improvements across standard-tests and text-splitters.

This release updates langchain-classic to 1.0.1, featuring enhanced model initialization for Anthropic and Google GenAI, a transition to uuid7 for run IDs, and the removal of the Tigris provider.

This release includes a fix for a serialization issue in langchain-core.

This release focuses on bug fixes for tool decorators and serialization, while introducing PEP 702 support for deprecations and automated tool call tracking.

This release introduces usage metadata tracking in LangChainTracer and fixes a trace persistence issue for iterator-based inputs.

This release introduces a fix for handling unknown blocks in OpenAI message conversion and adds infrastructure checks for lockfile consistency.

Version 1.1.6 updates the maximum input token limits for the gpt-5 series models.

Version 1.1.5 of langchain-openai fixes an issue with chunk_position by delegating its setting to langchain-core.

Version 1.1.1 of langchain-tests introduces more descriptive error messages for streaming cases to improve developer experience during testing.

Version 1.2.2 is a maintenance release focusing on Python 3.14 compatibility and internal lockfile updates.

Version 1.1.4 reverts a model selection change for flex usage and fixes documentation links for structured output.

This release introduces a strict mode for structured outputs in ProviderStrategy and adds an extras field to BaseTool, alongside fixes for multithreading race conditions and HuggingFace model initialization.

This patch release fixes a bug in tool call parsing when handling null arguments and improves type hinting for ToolCallChunk.

Release 1.1.0 introduces R language support for text splitting and transitions to uuid7 for run IDs, while ensuring compatibility with Python 3.14.

This release introduces support for the gpt-5.2-pro responses API and includes bug fixes for image resizing and API response handling.

Release 1.2.0 focuses on fixing and improving the init_chat_model integration for HuggingFace backends and updating core dependencies.

Version 1.1.1 of langchain-mistralai fixes a bug regarding null content in tool call responses and updates internal core dependencies.

This release introduces the ability to override tool_choice in structured output and adds parameter filtering for tool binding in the Groq integration.

Version 1.1.0 introduces invocation model overrides and stricter type checking while removing the deprecated has_tool_choice property and improving documentation clarity.

This release fixes a bug regarding unsupported arguments in ChatOllama and adds unit tests for reasoning parameters. It also includes documentation improvements and cross-references for tool conversion functions.

Version 1.3.0 introduces Model Context Protocol (MCP) support, automatic beta header management for computer use, and enhanced tool capabilities including tool search and TypedDict support.

This release introduces an extras field to BaseTool for enhanced provider metadata and improves type flexibility for OpenAI tool conversions.

This release introduces a new Search API for Chroma and resolves critical bugs related to Pydantic validation and OpenCLIP image embedding regressions.

This release fixes parameter handling for temperature and tools in ChatOpenAI and introduces a strict flag for structured outputs.

This release focuses on fixing dependency constraints for jinja2 and resolving issues related to partial function usage in retrievers.

This release introduces support for Upstage models in the chat model initializer and adds an agent name field to AIMessage, alongside typing improvements in core message utilities.

Version 1.1.1 of langchain-openai addresses a bug in the Responses API when mixing tool types and includes minor documentation improvements.

This release introduces Google Maps grounding support and improves asynchronous task stability. It also deprecates the py_anext utility and refines documentation and typing for message utilities.

This release introduces uuid7 for run IDs and provides several bug fixes for tool calling, schema handling, and output parsing formatting.

This patch release simplifies the internal logic for summarization cutoffs.

This release introduces UUIDv7 for run IDs and improves the accuracy of the SummarizationMiddleware by adjusting token counts based on the specific model used.

LangChain 1.1 introduces ModelRetryMiddleware, enhanced SummarizationMiddleware with context window support, and SystemMessage support in agent creation. It also includes critical fixes for tool call ordering and Anthropic tool execution.

This release introduces distributed model profile data across packages and includes various documentation updates and code style refinements.

This release introduces a dedicated output parser for Perplexity reasoning models and expands usage metadata tracking. It also includes internal improvements to model profile data distribution and documentation updates.

This release focuses on distributing model profile data across packages and fixing documentation syntax errors.

This release focuses on distributing model-profile data across packages and fixing validation logic for GPT-5 temperature settings, alongside various documentation and style improvements.

This release focuses on distributing model profile data across packages and includes several documentation improvements and link fixes.

This release introduces distributed model profiles and fixes a bug regarding parameter passing in the ChatHuggingFace class.

This release introduces distributed model profile data and deprecates the use of setattr on ModelCallRequest, alongside documentation syntax fixes.

Release 1.1.0 of langchain-fireworks introduces distributed model profiles and updates the suite of tested models while fixing documentation syntax.

This release introduces native structured output and strict tool calling for Anthropic, alongside various documentation syntax fixes and linting improvements across the codebase.

Version 0.0.5 introduces data distribution across packages for langchain-model-profiles and includes documentation updates.

This release introduces model profiles to facilitate data distribution across packages within the LangChain ecosystem.

This release addresses a security vulnerability (GHSA-6qv9-48xg-fc7f) by tightening validation for f-string templates and restricting functionality in jinja2 and mustache templates.

This release focuses on security hardening by restricting template engine functionality and improving input variable validation for f-string templates.

This is a minor patch release for langchain, incrementing the version from 1.0.7 to 1.0.8.

This release introduces proxy support for Mermaid PNG rendering and enables tool runtime injection for custom argument schemas.

This release introduces native structured output and strict tool calling support for Anthropic models, alongside code execution capabilities and various bug fixes for tool nodes and async hooks.

Version 1.0.3 introduces handling for incomplete streaming events and enforces token limits for embeddings, alongside several bug fixes for API compatibility.

This is a minor release for langchain version 1.0.7, primarily serving as a version bump from 1.0.6.

This release includes cherry-picked bug fixes to improve the integration between the core langchain package and the langchain-anthropic partner package.

This release includes cherry-picked bug fixes for the LangChain and Anthropic integration along with improvements to middleware docstrings.

This release focuses on bug fixes regarding exception handling and reverts a recent change to secret mapping in the load function. It also includes documentation improvements for token counting methods.

Release 1.0.1 introduces prompt caching token usage details and fixes issues with empty tool call arguments and core dependency versioning.

This release introduces support for strict structured output in the DeepSeek integration and includes various documentation and metadata updates.

Minor release for langchain-nomic updating metadata and extending compatibility to Python 3.14.

This release introduces support for the code_execution_20250825 feature in the Anthropic integration and includes minor documentation updates.

Version 0.0.4 of langchain-model-profiles includes general code cleanup and styling improvements.

LangChain 1.0.5 focuses on stability by reverting SystemMessage support in create_agent, increasing the default recursion limit, and updating core dependencies.

This release introduces subgraph drawing support via pygraphviz and includes several bug fixes related to schema generation, async callback context preservation, and prompt formatting.

Minor maintenance release for langchain-anthropic focusing on test suite improvements, multimodal test updates, and internal code cleanup.

LangChain v1.0.4 introduces model-profiles as an optional dependency and includes several stability fixes for tracing, thread counting, and tool call middleware.

This release introduces stream usage tracking for ChatHuggingFace and includes various maintenance fixes for documentation and package metadata.

This release updates langchain-model-profiles to version 0.0.3, primarily addressing a bug fix for the pdf_inputs field.

This release focuses on maintenance for the langchain-tests package, including bug fixes for multimodal and agent loop tests, documentation link repairs, and compatibility updates for Python 3.14.

This release introduces model profile support via a new property on BaseChatModel and updates Anthropic model identifiers.

Version 1.0.2 focuses on test suite stability, fixing a TypeError in ChatOpenAI tests and improving error handling coverage for streaming.

Version 0.0.2 of langchain-model-profiles introduces support for more model providers.

This release introduces the langchain-model-profiles package and adds a profile property to BaseChatModel, while refining dependency management by removing langchain-core from model-profiles.

This release adds support for Sonnet 4.5 default token limits, updates model ID handling, and moves ToolNode improvements to langgraph. It also includes various documentation and test suite cleanups.

This release introduces structured output retry middleware and exports UsageMetadata, while moving ToolNode improvements back to the langgraph package and fixing various internal references.

This release focuses on internal cleanup, tracing improvements, and bug fixes for Pydantic and Google GenAI integrations, while exporting UsageMetadata for better tracking.

This patch release focuses on hardening schema handling, improving strict mode property requirements, and updating documentation for mustache template variables.

This release fixes a bug involving duplicate tool calls in chat message conversion and removes internal tenacity retries for embedding calls.

Version 1.1.0 introduces support for Qdrant's native server-side MMR search and includes minor maintenance updates to project metadata.

Version 1.0.2 of langchain_v1 fixes an issue where non-controllable parameters were incorrectly included in tool messages during invocation failures.

This release introduces the ability to provide a callable for the OpenAI API key and updates project metadata URLs.

This release includes a fix for ToolRuntime argument defaults, updates to embeddings module documentation, and the introduction of model aliases for Anthropic.

Official 1.0.0 release for langchain-xai, featuring a migration to the hatchling build system, Python 3.14 support, and improved metadata in response objects.

LangChain v1.0.0 release introduces Python 3.14 support, a suite of new tool and model middleware, and significant refactoring of the agents and tools namespaces for production stability.

This release marks the 1.0.0 milestone for the prompty package, featuring a rename to langchain-classic, a transition to the Hatchling build system, and initial support for Python 3.14.

Major release 1.0.0 for langchain-deepseek featuring Python 3.14 support, a migration to the hatchling build backend, and improved metadata injection for better tracing.

This release marks the 1.0.0 stable version of langchain-openai, featuring service tier token tracking, moderation middleware, and a transition to the hatchling build system.

Major 1.0.0 release for langchain-mistralai, introducing support for reasoning features and v1 content while migrating the build system to Hatchling.

This release marks the 1.0.0 stable version of langchain-ollama, featuring Python 3.14 support, a migration to the Hatchling build backend, and various documentation and parameter handling fixes.

Major release 1.0.0 for langchain-fireworks featuring Python 3.14 support, infrastructure migration to hatchling, and significant documentation and linting improvements.

Langchain-Huggingface v1.0.0 introduces Python 3.14 support, migrates the build system to Hatchling, and standardizes documentation and internal styling.

Major release 1.0.0 for langchain-groq featuring built-in tool support in message content, Python 3.14 compatibility, and a migration of the build system to hatchling.

Major 1.0.0 release for langchain-perplexity featuring a migration to the Hatchling build backend, Python 3.14 support, and significant documentation and linting standardizations.

Major release 1.0.0 for langchain-exa featuring Python 3.14 support, a migration to the Hatchling build backend, and extensive documentation and linting improvements.