Most AI projects fail. Yours doesn’t have to.
Reserve your spot today and get a production-ready Agent Blueprint in just 3 weeks
6
spots‍
‍available
Register for Your Agent Blueprint
About
Capabilities
Custom AgentsReliable RAGCustom Software DevelopmentEval Driven DevelopmentObservability
LangChainCase StudiesFocused Lab
Contact us
/Focused Lab learning community

Building great software requires shared knowledge

At Focused, we talk a lot about solving hard problems for the satisfaction of finding the answer. Join our community to learn new skills, ask questions, share your wins, and build better software.

Subscribe for updates

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Explore Focused Lab

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Team members writing notes on paper next to laptops during a collaborative work session

Technology Consulting: Benefits, Trends, and How it Works

Is your organization facing technology-induced headaches? It's only becoming more complicated to keep up with rapidly evolving tech while managing multiple systems. Technology consulting addresses this constantly shifting environment, and the market is booming — valued at $48.3 billion in 2020 and expected to grow at 11.5% CAGR through 2028. The right technology consultant doesn't just bring technical knowledge, but the ability to solve underlying business issues.
Blog
Woman writing on a whiteboard during a team presentation with colleagues watching

Ensuring Long-Term Success: Beyond the Software Consulting Hand-Off

The "consulting hand-off" of software projects is notorious — and for good reason. There are many horror stories of major consulting companies leaving customers with a barely functioning product and a hefty invoice. A good partner will always leave their client in a better place, whether the engagement is a two-hour meeting or a two-year cloud migration.
Blog
Focused Labs logo with repeating tagline text: Big impact, Hard problems, Evolving Legacy, Next Era

Focused Labs Announces Strategic Partnership With Honeycomb.io

We are thrilled to announce a strategic partnership between Focused Labs and Honeycomb.io, marking a significant milestone in our journey to drive incremental modernization of legacy systems. This collaboration is designed to extend the exceptional white-glove experience that Honeycomb's customers have come to know and expect, combining cutting-edge observability with hands-on engineering enablement.
News
Dark purple branded graphic with Focused Labs logo and abstract geometric shapes

Focused Labs Announces Strategic Partnership With LangChain to Foster AI-Driven Development

Focused Labs is excited to announce its strategic partnership with LangChain, a leading provider of GenAI solutions and open source. This collaboration marks a significant step in bringing cutting-edge AI technologies to the forefront of enterprise development, combining Focused Labs' lean development expertise with LangChain's AI-driven tools and frameworks.
News
Headshot of a smiling man with a beard against a purple and branded text background

Chat With Your PDFs PART 2: Frontend - An End-to-End LangChain Tutorial

In Part 2 of this series, we build a React and TypeScript frontend for our AI chatbot using TailwindCSS. You'll learn how to stream LLM responses to the browser with Server Sent Events, display source documents alongside AI answers, and connect it all to the LangServe backend we built in Part 1.
Tutorials
Woman working on a laptop at a cafe table with coffee and glasses nearby, purple overlay

Debugging Your RAG Application: A LangChain, Python, and OpenAI Tutorial

Let's explore a real-world example of debugging a RAG-type application. While updating our company knowledge base, I discovered that basic queries received correct answers, but follow-up questions lacked appropriate context — conversational memory had stopped working. Here's how I traced the bug step by step using a mix of traditional and AI-specific debugging techniques.
Tutorials
Chicago lakefront skyline at sunset with the Hancock tower and boats in the harbor

Paying It Forward, One Donation at a Time

At Focused Labs, we're not only about tech — we're about making a real impact in our community. Through employee donation matching, charitable prizes, and a laptop purchase program that gives back, we've built a culture where giving is woven into everything we do. Since 2022, we've matched over $17,000 in employee donations and we're not stopping anytime soon.
Blog
Group of five coworkers collaborating around computer monitors in a modern office with purple overlay

Introduction to LangChain Expression Language: A Developer’s Guide

Are you searching for an exceptional framework to build custom AI applications? LangChain's latest update using LangChain Expression Language (LCEL) offers streaming, async support, parallel execution, and more right out of the box. Here's how we upgraded our RAG application to use LCEL — step by step, from whiteboard to production.
Blog
Two developers collaborating at a desk with multiple monitors showing code

Demystifying LCEL & LangChain

The holiday season is the perfect time to dive into new technology — and this year, that means building applications with AI. There's tons of content about cool AI startups and crafting the perfect prompt, but what about actually building production apps? Let's get technical and dive into LangChain Expression Language (LCEL), a composable interface that gives you streaming, async support, and parallel execution right out of the box.
Blog
AI chatbot interface and purple credit card mockup side by side on a gradient background

OpenAI Assistants: Limited, but Incredible

OpenAI has ventured into Retrieval Augmented Generation with its latest offering, Assistants. Think ChatGPT, but with the ability to ask it about custom information. While it doesn't yet lead the pack in creating AI-driven knowledge bases, being able to spin up a custom chatbot in a couple of hours with roughly 75% accuracy is incredible. Here's what developers should know about its capabilities and limitations.
Blog
Woman with glasses holding a pen in thought at a desk with a purple overlay

Elevating Design: The Journey of Integrating GPT With Accessibility and Design Standards

Since the announcement of GPTs, I've been itching to create one focused on accessibility. But as I delved deeper, I realized that simply replicating existing accessibility checkers wouldn't be enough. I pivoted to building a comprehensive design assistant — one that analyzes screenshots and offers insights based on WCAG guidelines, Nielsen Norman heuristics, UX laws, and material design principles from Google and Apple.
Blog
Illustration of two remote code editors connected by network lines on a purple background

Enhancing AI Apps with Streaming: Practical Tips for Smoother AI Generation

Interested in building an AI-powered app using generative models? A common challenge is latency — users waiting up to 30 seconds before seeing AI suggestions. By leveraging OpenAI's streaming feature with Server Sent Events, we cut the wait for first content from 30 seconds down to half a second. Here are two practical tips for enhancing your AI app's user experience through effective streaming.
Blog
Two developers pair programming while reviewing HTML code on a large monitor

Top 6 Things I Learned While Building a Domain-Specific Custom AI ChatBot

Stepping into the world of AI, I quickly grasped the enormous potential of domain-specific chatbots. My team and I crafted a smart AI chatbot tailored for the Focused Labs website — not just a simple chat interface, but a comprehensive "Knowledge Hub" that leverages natural-language models. Here are the top six insights I uncovered during the process, from orchestrating multiple AI models to thinking less like a programmer and more like a linguist.
Blog
Chicago skyline with skyscrapers along the river under a hazy sky with purple overlay

Lightning Talks: The Best Activity You're Not Doing Yet

Why Focused Labs love Lightning Talks and how your organization can integrate them into your events as novel team building opportunities.
Blog
Smiling man working at a desktop computer in a bright modern office

Modernize Your Business with Legacy System Modernization

In the world of technology, it's easy to be lured by the promise of a brand new system. But tales of cost overruns, schedule slippages, and features left undelivered are common regardless of industry. That's why organizations should be looking for innovative ways to maximize their existing systems — tapping into underutilized modules and reengineering key components so old systems can produce new results.
Blog
Diverse team of four collaborating around a laptop with sticky notes on a glass wall behind them

Leverage Your Current System for Future Growth

Digital modernization gets all the attention, promising new technologies and efficiencies. But all that glitters isn't gold, especially in technology. When budgets are limited and business operations can't be interrupted by a lengthy cut-over, maximizing your existing legacy systems to their full potential can be the true win-win your team has been looking for.
Blog
1

Chat With Your PDFs PART 1: An End-to-End LangChain Tutorial

Chat With Your PDFs PART 2: Frontend - An End-to-End LangChain Tutorial

Deploy an AI Coding Assistant in the Cloud with Hetzner, Ollama, and TailScale for Cursor

01
/
03
/Focused Lab

Watch the latest from Focused

Your expert in agents and integrations.

Get in touch
Focused

433 W Van Buren St

Suite 1100-C
Chicago, IL 60607

‍
‍work@focused.io
‍
(708) 303-8088

About
Leadership
Capabilities
Case Studies
Focused Lab
Careers
Contact
RSS
© 2026 Focused. All rights reserved.
Privacy Policy