LatestJuly 14, 2026

Fine-Tuning Guide: When It Is Worth It and How to Do It in 2026

A current decision framework and production workflow for fine-tuning LLMs, from prompting and RAG through datasets, evaluation, training, deployment, and monitoring.
Stephen M. Walker II
Stephen M. Walker IICo-Founder / CEO
July 14, 2026

Fine-Tuning OpenAI Models: What Still Works

OpenAI is winding down self-serve fine-tuning. Here are the models you can still fine-tune, the current API syntax, published pricing, and the decisions to make before the window closes.

Stephen M. Walker IIStephen M. Walker II
July 14, 2026

Fine-Tuning GPT-4 with OpenAI's API: A Current Guide

OpenAI is winding down its fine-tuning platform. Here is what remains fine-tunable in the GPT-4 family, the current API and data format, and the available alternatives.

Stephen M. Walker IIStephen M. Walker II
July 14, 2026

How Teams Actually Agree a Prompt Got Better

A repeatable workflow for mixed teams to decide whether a new prompt version is actually better, and to keep a written record of why.

Stephen M. Walker IIStephen M. Walker II
July 14, 2026

The Best AI Tools for Startups in 2026: A Stack That Earns Its Cost

An opinionated AI startup stack organized by the work each tool does, with overlap, security concerns, and clear reasons to skip each product.

Stephen M. Walker IIStephen M. Walker II
January 8, 2026

Optimizing LLM Apps

This comprehensive guide provides developers, product managers, and AI Teams with a structured framework for optimizing large language model (LLM) applications to achieve reliable performance. It explores techniques like prompt engineering, retrieval-augmented generation, and fine-tuning to establish strong baselines, fill knowledge gaps, and boost consistency. The goal is to systematically evaluate and improve LLM apps to deliver delightful generative experiences.

Stephen M. Walker IIStephen M. Walker II
December 15, 2025

Comparative Analysis: Google Gemini Pro vs. OpenAI GPT-3.5

In this article, we provide a comparative analysis between Google's Gemini Pro and OpenAI's GPT-3.5, evaluating their performance, scalability, and cost-effectiveness.

Stephen M. Walker IIStephen M. Walker II
December 8, 2025

Building Your AI Team in 2025

What a year of conversations with AI teams building products in 2025 taught us about roles, team shapes, and evaluation.

Stephen M. Walker IIStephen M. Walker II
December 8, 2025

Prompt Engineering Guide: A Comprehensive Examination of Prompt Techniques

Master the art and science of crafting prompts that precisely convey context and intent to transform how LLM systems interpret and respond to queries.

Stephen M. Walker IIStephen M. Walker II
November 23, 2025

Analyzing Retool's State of AI 2023 Report

In this post, we dive into Retool's State of AI 2023 report, analyzing key findings from a survey of over 1,500 tech professionals. We explore current AI usage, tooling preferences, and future outlooks, providing insights into how generative AI tools are being leveraged today and the evolving expectations.

Stephen M. Walker IIStephen M. Walker II
November 10, 2025

OpenAI DevDay 2023 Reflections

The Klu team evaluates the new functionality rolled out by OpenAI this week.

Stephen M. Walker IIStephen M. Walker II
October 19, 2025

Startup Guide to Azure OpenAI

As Azure OpenAI continues gaining traction for its speed and startup credits, understanding the key differences from the public OpenAI API is key.

Stephen M. Walker IIStephen M. Walker II
October 16, 2025

AI Safety in 2023: analysts claim issues up 700% in 2023

In 2023, Generative AI models like ChatGPT dominated headlines and sparked calls for regulation, while risks from physical AI systems like autonomous vehicles and deepfakes went largely overlooked.

Stephen M. Walker IIStephen M. Walker II
October 10, 2025

Why most Vector DBs will die – Pt.01

Startups need to work smart and efficient. This blog post explores the top AI tools we use daily that help streamline operations, create content, and automate tasks.

Stephen M. Walker IIStephen M. Walker II
October 6, 2025

AI in the News: Alignment, Doom, Risk, and Understanding

Break down common AI misconceptions around understanding, controlling, and aligning large language models, highlighting techniques like RLHF that shape model outputs to human preferences.

Stephen M. Walker IIStephen M. Walker II
September 23, 2025

Guide: Getting started with Klu Python SDK

Build your first Klu Action with the Python SDK in 5 Steps

Stephen M. Walker IIStephen M. Walker II
September 23, 2025

Guide: Getting started with Klu TypeScript SDK

Build your first Klu Action with the TypeScript SDK in 5 Steps

Stephen M. Walker IIStephen M. Walker II
September 22, 2025

Just Launched: Our expanded, global OpenAI GPT-4 deployment

Expanding our global deployment of OpenAI GPT-4 across 12 regions, emphasizing redundancy, load scaling, and regional privacy compliance.

Stephen M. Walker IIStephen M. Walker II
September 1, 2025

Everything We Know About GPT-4

OpenAI GPT-4 Model Card

Stephen M. Walker IIStephen M. Walker II
September 1, 2025

OpenAI SDK: Fine-tune GPT-3.5 Turbo

Learn how to fine-tune OpenAI GPT-3.5 Turbo using your own data with steps for data preparation, training, evaluation, and deployment to create customized LLM deployments for your specific applications.

Stephen M. Walker II (Co-Founder / CEO)Stephen M. Walker II (Co-Founder / CEO)
August 28, 2025

Open Source LLMs: Exploring 5 Popular Models in August 2023

Discover the top 5 open-source large language models in 2023 that developers can leverage, including LLaMA, Vicuna, Falcon, MPT, and StableLM. Compare model details like architecture, data, metrics, customization, community support and more to determine the best fit for your NLP projects.

Stephen M. Walker II (Co-Founder / CEO)Stephen M. Walker II (Co-Founder / CEO)
August 19, 2025

AI Collaboration: the key to breakout products

An analysis of the best AI products released in 2022-2023, their impact on the ecosystem, and what this means for the future.

Stephen M. Walker IIStephen M. Walker II
July 17, 2025

Best Open Source LLMs of 2025

Open source LLMs like Gemma 2, Llama 3.1, and Command R+ are bringing advanced AI capabilities into the public domain. This guide explores the best open source LLMs and variants for capabilities like chat, reasoning, and coding while outlining options to test models online or run them locally and in production.

Stephen M. Walker IIStephen M. Walker II
July 12, 2025

Evaluating 2024 Frontier Model Capabilities Pt.01

In this article, we'll dive into the current state of frontier models, exploring their capabilities, limitations, and the gap between benchmarks and real-world performance. We'll introduce QUAKE, a new benchmark designed to evaluate LLMs on practical knowledge worker tasks, and share our findings on model performance across various domains.

Stephen M. Walker IIStephen M. Walker II
July 8, 2025

Unleashing the Power of Multimodal AI Models: Understanding the Future of Artificial Intelligence

Multimodal AI Models are transforming the landscape of artificial intelligence by enabling systems to process and understand multiple data types simultaneously, much like human cognition. This blog post dives into the power and potential of these models, exploring notable examples like GPT-4-V, LLava 1.5, and Fuyu-8B. We will discuss the challenges and solutions in multimodal AI integration, and explore their real-life applications and future implications. Join us as we unravel the future of artificial intelligence through the lens of multimodal AI models.

Stephen M. Walker IIStephen M. Walker II
July 4, 2025

AI Readiness: 7 Key Areas to Evaluate for Successful AI Implementation

Learn how to develop an AI vision, foster a supportive culture, build robust data pipelines, upgrade infrastructure, embed ethical AI safeguards, and track AI success through actionable strategies.

Stephen M. Walker IIStephen M. Walker II