How to Build a Multi-Agent System Using LangChain

Multi-agent systems represent one of the most powerful patterns in AI development, enabling complex tasks to be decomposed across specialized agents that collaborate to achieve goals beyond what any single agent could accomplish. While a single LLM agent can handle straightforward tasks, real-world applications often require orchestrating multiple specialized agents—one for research, another for data … Read more

Chat Models vs Instruction Models: What’s the Difference?

When browsing model repositories like Hugging Face, you’ll encounter confusingly similar model names: “Llama-3-8B,” “Llama-3-8B-Instruct,” and sometimes “Llama-3-8B-Chat.” These aren’t just marketing variations—they represent fundamentally different models trained for different purposes. Understanding the distinction between base models, instruction-tuned models, and chat-optimized models determines whether your application succeeds or produces frustrating, unusable outputs. The confusion is … Read more

When a 7B Model Beats a 13B Model

The assumption that larger language models always perform better is deeply ingrained in the AI community. More parameters mean more knowledge, better reasoning, and superior outputs—or so the conventional wisdom goes. Yet in practical deployments, 7B parameter models frequently outperform their 13B counterparts on real-world tasks. This isn’t a statistical anomaly or measurement error; it … Read more

Common Design Mistakes in Agentic AI Systems

Building agentic AI systems that reliably accomplish complex tasks represents one of the most challenging endeavors in modern software development. Unlike traditional applications with predictable control flows, agents operate with varying degrees of autonomy, making decisions based on probabilistic models rather than deterministic logic. This fundamental shift introduces a new category of design challenges that … Read more

Why Agentic AI Fails in Practice

Agentic AI promises autonomous systems that reason, plan, and execute complex tasks without constant human supervision. The vision is compelling: AI agents that manage your email, conduct research, debug code, or handle customer service end-to-end. Demos showcase impressive capabilities—agents browsing websites, calling APIs, writing code, and solving multi-step problems. Yet when organizations attempt deploying these … Read more

LangChain Agents vs LangGraph: When to Use Each

The LangChain ecosystem has evolved rapidly, introducing developers to powerful tools for building AI applications. Two approaches have emerged for creating autonomous AI systems: the original LangChain Agents and the newer LangGraph framework. While both enable building intelligent agents that can use tools and make decisions, they represent fundamentally different architectural philosophies that suit different … Read more

Common Architecture Patterns for Local AI Applications

Building applications with local AI models differs fundamentally from cloud-based AI development. When models run on your infrastructure instead of external APIs, architectural decisions around data flow, model management, resource allocation, and user interaction patterns shift dramatically. The patterns that work for cloud AI often fail locally, while new patterns emerge that leverage local deployment … Read more

Experiment Tracking for Local ML Projects

Machine learning experimentation generates chaos. You try different architectures, tune hyperparameters, test preprocessing techniques, and compare models—quickly losing track of what worked and why. Without systematic experiment tracking, you repeat failures, forget successful configurations, and struggle to reproduce results. This problem intensifies when working on local machines where cloud-based tracking platforms aren’t suitable or desired. … Read more

Using Local LLMs for Private Document Search

Privacy concerns around sensitive documents have made local AI solutions increasingly attractive. Whether you’re managing confidential business documents, personal medical records, legal files, or proprietary research, sending this information to cloud-based AI services poses significant risks. Local large language models (LLMs) combined with vector databases offer a powerful alternative: private, secure document search that never … Read more