---
title: "Discussion on \"I Taught My Local Model to Speak LangChain\" | Hashnode"
description: "Discussion on \"I Taught My Local Model to Speak LangChain\". How to extend BaseChatModel, implement tool calling, parse JSON responses, and run self hosted GGUF model with LangChain no other API required."
url: "https://hashnode.com/posts/custom-langchain-chat-model-local-llm/6a4a28818251985fc678d4c8"
---

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# [I Taught My Local Model to Speak LangChain](https://tanisha-soni.hashnode.dev/custom-langchain-chat-model-local-llm?utm_source=hashnode&utm_medium=feed)

How to extend BaseChatModel, implement tool calling, parse JSON responses, and run self hosted GGUF model with LangChain no other API required.

Jul 5 · 9 min read · tanisha-soni.hashnode.dev  
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-   [#langchain](https://hashnode.com/tag/langchain)
-   [#llm](https://hashnode.com/tag/llm)
-   [#llamacpp](https://hashnode.com/tag/llamacpp)
-   [#gguf](https://hashnode.com/tag/gguf)

## Written by

[Tanisha Soni](https://hashnode.com/@tanisha-soni)

@tanisha-soni · Mumbai, India

  
[View profile](https://hashnode.com/@tanisha-soni)

AI/Backend Engineer building agentic systems with LangChain & MCP

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