# google/langextract

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33,310 stars · 2,219 forks · Python · apache-2.0

## Links

- GitHub: https://github.com/google/langextract
- Homepage: https://pypi.org/project/langextract/
- awesome-repositories: https://awesome-repositories.com/repository/google-langextract.md

## Topics

`gemini` `gemini-ai` `gemini-api` `gemini-flash` `gemini-pro` `information-extration` `large-language-models` `llm` `nlp` `python` `structured-data`

## Description

Langextract is a framework designed to transform unstructured text into structured, machine-readable data using language model orchestration. It provides a high-performance pipeline that processes large volumes of narrative text by utilizing parallel execution and sequential extraction passes. The library is built to handle complex data extraction tasks, including specialized support for clinical information and medical entity relationship recognition.

The project distinguishes itself through a plugin-based architecture that supports both local hardware execution and cloud-hosted model endpoints. By providing a unified abstraction layer, it allows users to switch between different inference providers without modifying core application logic. The framework enforces output consistency through schema-guided generation and prompt-driven templates, ensuring that extracted entities adhere to predefined formats.

Beyond its core extraction capabilities, the library includes administrative utilities for managing model authentication, custom provider registration, and system integration testing. It supports scalable workflows through batch processing and chunked document analysis, while offering interactive visualization tools to verify extracted results against original source text. Data can be exported in standard formats to facilitate integration with external analysis environments.

## Tags

### Artificial Intelligence & ML

- [Data Extraction Frameworks](https://awesome-repositories.com/f/artificial-intelligence-ml/data-extraction-frameworks.md) — Orchestrates language model prompts and processing workflows to transform unstructured text into structured formats.
- [Extraction Execution Engines](https://awesome-repositories.com/f/artificial-intelligence-ml/extraction-execution-engines.md) — Executes extraction workflows by passing input text and prompt configurations to supported language models. ([source](https://pypi.org/project/langextract/))
- [Inference Integration Layers](https://awesome-repositories.com/f/artificial-intelligence-ml/inference-integration-layers.md) — Provides a plugin-based architecture to connect diverse language models to standardized data processing pipelines.
- [Local Model Orchestrators](https://awesome-repositories.com/f/artificial-intelligence-ml/local-model-orchestrators.md) — Running language models entirely on private hardware to perform data processing tasks without relying on external cloud APIs or internet connectivity.
- [Local Model Runners](https://awesome-repositories.com/f/artificial-intelligence-ml/local-model-runners.md) — Executes inference tasks directly on local hardware to ensure data privacy and eliminate cloud dependencies.
- [AI Integration Frameworks](https://awesome-repositories.com/f/artificial-intelligence-ml/ai-integration-frameworks.md) — Connects diverse language models and custom inference services to a unified pipeline.
- [Clinical Information Extraction](https://awesome-repositories.com/f/artificial-intelligence-ml/clinical-information-extraction.md) — Identifies clinical entities and relationships within unstructured medical notes for healthcare analysis. ([source](https://pypi.org/project/langextract/))
- [Extraction Task Definitions](https://awesome-repositories.com/f/artificial-intelligence-ml/extraction-task-definitions.md) — Defines extraction tasks using natural language prompts and examples to guide entity and attribute identification. ([source](https://pypi.org/project/langextract/))
- [Prompt Engineering Templates](https://awesome-repositories.com/f/artificial-intelligence-ml/prompt-engineering-templates.md) — Uses descriptive templates and few-shot examples to guide models in transforming unstructured text into structured data.
- [Clinical Data Extraction Tools](https://awesome-repositories.com/f/artificial-intelligence-ml/clinical-data-extraction-tools.md) — Converts complex medical notes and radiology reports into structured data to improve healthcare documentation.
- [Clinical Entity Recognition Toolkits](https://awesome-repositories.com/f/artificial-intelligence-ml/clinical-entity-recognition-toolkits.md) — A specialized extraction suite designed to identify and map complex medical terminology and relationships within healthcare documentation.
- [Medical Relationship Extraction](https://awesome-repositories.com/f/artificial-intelligence-ml/medical-relationship-extraction.md) — Links related medical entities to represent complex relationships between medications, dosages, and conditions. ([source](https://github.com/google/langextract/blob/main/docs/examples/medication_examples.md))
- [Schema Enforcement Tools](https://awesome-repositories.com/f/artificial-intelligence-ml/schema-enforcement-tools.md) — Enforces specific output structures during extraction to ensure adherence to predefined data schemas.
- [External Model Connectors](https://awesome-repositories.com/f/artificial-intelligence-ml/external-model-connectors.md) — Connects to external language model endpoints with support for batch processing and standard communication protocols. ([source](https://pypi.org/project/langextract/))
- [Extraction Engines](https://awesome-repositories.com/f/artificial-intelligence-ml/extraction-engines.md) — The library processes data entirely on local hardware using integrated model runners to perform extraction tasks without needing external API keys or cloud-based infrastructure. ([source](https://pypi.org/project/langextract/))
- [Radiology Report Structuring](https://awesome-repositories.com/f/artificial-intelligence-ml/radiology-report-structuring.md) — Converts narrative radiology findings into organized machine-readable data using pre-built extraction logic. ([source](https://pypi.org/project/langextract/))
- [Batch Inference Services](https://awesome-repositories.com/f/artificial-intelligence-ml/batch-inference-services.md) — Enables cost-effective batch processing through cloud-based artificial intelligence services. ([source](https://cdn.jsdelivr.net/gh/google/langextract@main/README.md))
- [Model Provider Plugins](https://awesome-repositories.com/f/artificial-intelligence-ml/model-provider-plugins.md) — Supports third-party plugins and specialized inference services beyond standard built-in options. ([source](https://pypi.org/project/langextract/))

### Data & Databases

- [Structured Data Extraction](https://awesome-repositories.com/f/data-databases/structured-data-extraction.md) — Processes long documents using parallel execution and sequential passes to convert unstructured text into organized data formats. ([source](https://pypi.org/project/langextract/))
- [Unstructured Data Transformation Tools](https://awesome-repositories.com/f/data-databases/unstructured-data-transformation-tools.md) — Converts large volumes of narrative text into clean and organized formats for analysis and storage.
- [Document Processing Engines](https://awesome-repositories.com/f/data-databases/document-processing-engines.md) — Executes parallel extraction passes to convert large volumes of narrative text into machine-readable data.
- [Schema Enforcement Tools](https://awesome-repositories.com/f/data-databases/schema-enforcement-tools.md) — Enforces specific output structures during extraction using schema-guided generation. ([source](https://github.com/google/langextract/blob/main/docs/examples/longer_text_example.md))
- [Chunked Processing Utilities](https://awesome-repositories.com/f/data-databases/chunked-processing-utilities.md) — Extracts structured information from large documents by processing text in manageable chunks. ([source](https://github.com/google/langextract/blob/main/docs/examples/longer_text_example.md))
- [Multi-Pass Extraction Pipelines](https://awesome-repositories.com/f/data-databases/multi-pass-extraction-pipelines.md) — Performs multiple independent extraction passes over text to improve recall and capture missed entities. ([source](https://github.com/google/langextract/blob/main/docs/examples/longer_text_example.md))

### Software Engineering & Architecture

- [API Abstraction Layers](https://awesome-repositories.com/f/software-engineering-architecture/api-abstraction-layers.md) — Maps diverse service protocols from various cloud and local model providers to a consistent internal interface for seamless integration.
- [Parallel Processing Pipelines](https://awesome-repositories.com/f/software-engineering-architecture/parallel-processing-pipelines.md) — Distributes extraction tasks across multiple concurrent threads to maximize throughput and reduce latency.
- [Workflow Scaling Utilities](https://awesome-repositories.com/f/software-engineering-architecture/workflow-scaling-utilities.md) — Maintains high performance during large document processing via parallel execution and multi-pass extraction. ([source](https://pypi.org/project/langextract/))
- [Plugin Architectures](https://awesome-repositories.com/f/software-engineering-architecture/plugin-architectures.md) — Dynamically loads external modules to support diverse language model endpoints without modifying core code.