---
author: "Umesh Malik"
canonical: "https://umesh-malik.com/blog/tag/open-source-llms"
description: "Explore articles tagged with Open Source LLMs by Umesh Malik — AI Engineer, LLM & GenAI Developer. Learn Open Source LLMs best practices, practical tips, and in-depth guides."
title: "Umesh Malik's Blog - Open Source LLMs Articles | Open Source LLMs Tutorials"
tokens: 158
generator: "scripts/generate-page-markdown.mjs"
---

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# Open Source LLMs

1 article

 [![Context budget chart showing a 35KB system prompt consuming 14% of a 65K-token self-hosted context window before the first turn](https://umesh-malik.com/blog/migrate-large-system-prompt-ollama-cover.png)

LLM Engineering • Sep 15, 2026

### How to Migrate a Large System Prompt to Ollama Without Breaking It

Migrate a large system prompt to Ollama and it can burn 14% of a 65K context window before the first turn. What breaks, why, and the fix that worked.

8 min read

Read more →](https://umesh-malik.com/blog/migrate-large-system-prompt-ollama)