docs: core and community readme (#14623)

README.md

@@ -3,8 +3,7 @@
 ⚡ Building applications with LLMs through composability ⚡
 
 [![Release Notes](https://img.shields.io/github/release/langchain-ai/langchain)](https://github.com/langchain-ai/langchain/releases)
-[![CI](https://github.com/langchain-ai/langchain/actions/workflows/langchain_ci.yml/badge.svg)](https://github.com/langchain-ai/langchain/actions/workflows/langchain_ci.yml)
-[![Experimental CI](https://github.com/langchain-ai/langchain/actions/workflows/langchain_experimental_ci.yml/badge.svg)](https://github.com/langchain-ai/langchain/actions/workflows/langchain_experimental_ci.yml)
+[![CI](https://github.com/langchain-ai/langchain/actions/workflows/check_diffs.yml/badge.svg)](https://github.com/langchain-ai/langchain/actions/workflows/check_diffs.yml)
 [![Downloads](https://static.pepy.tech/badge/langchain/month)](https://pepy.tech/project/langchain)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Twitter](https://img.shields.io/twitter/url/https/twitter.com/langchainai.svg?style=social&label=Follow%20%40LangChainAI)](https://twitter.com/langchainai)

libs/community/README.md

@@ -1 +1,30 @@
-# langchain-community
+# 🦜️🧑‍🤝‍🧑 LangChain Community
+
+[![Downloads](https://static.pepy.tech/badge/langchain_community/month)](https://pepy.tech/project/langchain_community)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+
+## Quick Install
+
+```bash
+pip install langchain-community
+```
+
+## What is it?
+
+LangChain Community contains third-party integrations that implement the base interfaces defined in LangChain Core, making them ready-to-use in any LangChain application.
+
+For full documentation see the [API reference](https://api.python.langchain.com/en/stable/community_api_reference.html).
+
+![LangChain Stack](docs/static/img/langchain_stack.png)
+
+## 📕 Releases & Versioning
+
+`langchain-community` is currently on version `0.0.x`
+
+All changes will be accompanied by a patch version increase.
+
+## 💁 Contributing
+
+As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.
+
+For detailed information on how to contribute, see [here](.github/CONTRIBUTING.md).# langchain-community

libs/core/README.md

@@ -1 +1,58 @@
-# langchain-core
+# 🦜🍎️ LangChain Core
+
+[![Downloads](https://static.pepy.tech/badge/langchain_core/month)](https://pepy.tech/project/langchain_core)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+
+## Quick Install
+
+```bash
+pip install langchain-core
+```
+
+## What is it?
+
+LangChain Core contains the base abstractions that power the rest of the LangChain ecosystem. 
+These abstractions are designed to be as modular and simple as possible. 
+Examples of these abstractions include those for language models, document loaders, embedding models, vectorstores, retrievers, and more. 
+The benefit of having these abstractions is that any provider can implement the required interface and then easily be used in the rest of the LangChain ecosystem.
+
+For full documentation see the [API reference](https://api.python.langchain.com/en/stable/core_api_reference.html).
+
+## What is LangChain Expression Language?
+
+LangChain Core also contains LangChain Expression Language, or LCEL, a runtime that allows users to compose arbitrary sequences together and get several benefits that are important when building LLM applications. 
+We call these sequences “runnables”.
+
+All runnables expose the same interface with single-invocation, batch, streaming and async methods. 
+This design is useful because it is not enough to have a single sync interface when building an LLM application.  
+Batch is needed for efficient processing of many inputs.
+Streaming (and streaming of intermediate steps) is needed to show the user that progress is being made. 
+Async interfaces are nice when moving into production. 
+Rather than having to write multiple implementations for all of those, LCEL allows you to write a runnable once and invoke it in many different ways.
+
+For more check out the [LCEL docs](https://python.langchain.com/docs/expression_language/).
+
+![LangChain Stack](docs/static/img/langchain_stack.png)
+
+## 📕 Releases & Versioning
+
+`langchain-core` is currently on version `0.1.x`.
+
+As `langchain-core` contains the base abstractions and runtime for the whole LangChain ecosystem, we will communicate any breaking changes with advance notice and version bumps. The exception for this is anything in `langchain_core.beta`. The reason for `langchain_core.beta` is that given the rate of change of the field, being able to move quickly is still a priority, and this module is our attempt to do so.
+
+Minor version increases will occur for:
+
+- Breaking changes for any public interfaces NOT in `langchain_core.beta`
+
+Patch version increases will occur for:
+
+- Bug fixes
+- New features
+- Any changes to private interfaces
+- Any changes to `langchain_core.beta`
+
+## 💁 Contributing
+
+As an open-source project in a rapidly developing field, we are extremely open to contributions, whether it be in the form of a new feature, improved infrastructure, or better documentation.
+
+For detailed information on how to contribute, see [here](.github/CONTRIBUTING.md).