The daglo blog.

On-Premise LLM vs API: Cost Comparison and When It Pays Off

An on-premise LLM runs on GPU servers you own. Compare its cost with APIs and cloud GPUs, see when self-hosting pays off, and how to split work between open-weight models and APIs.

What Are Agent Skills? Reuse One SKILL.md Across AI Tools

Agent Skills is an open standard that teaches AI agents a workflow with one SKILL.md file. See what the Linux Foundation move means, how to structure a skill, share it across tools, and keep it safe.

What Is Sign in with ChatGPT? Use Your ChatGPT Plan in Other Apps

Sign in with ChatGPT lets you log in to other apps with your ChatGPT account and, in supported apps, use your plan for their AI features. Here's what users and product teams should know.

Multi-Agent AI Explained: Why Start With One Agent

What a multi-agent system is, how it compares to a single agent, why OpenAI recommends starting with one agent, the signs it's time to add more, and what to keep in a shared worklog.

What Are ChatGPT Plugins? How They Differ from MCP & Skills

ChatGPT plugins bundle skills and MCP servers into one install. Compare plugins, MCP, skills, and GPTs, see what plugin extensions and MCP Events can do, and learn what to check before connecting.

How to Use ChatGPT Sites to Turn a Spreadsheet into a Team Web App

A practical guide to ChatGPT Sites: five steps based on the Launch Radar demo, internal web app ideas for marketing teams, and what to check on sharing and personal data before you build.

What Are ChatGPT Dots? Always-On AI Agents Explained

Always-on AI agents remember your goal and keep working between chats. How ChatGPT dots work, how they differ from chatbots, and what to set up before you hand them work.

OpenAI DevDay Seoul 2026 Recap: 6 Ways ChatGPT Is Becoming an AI That Works

Our recap of OpenAI DevDay Seoul 2026 in six shifts: voice delegation, always-on Dots, goal-aware agents, plugins, ChatGPT Sites, and Sign in with ChatGPT, checked against OpenAI's official docs.

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How Voice AI Agents Talk and Get Work Done at the Same Time

How voice AI agents keep a conversation going while a backend handles real tasks like bookings: the delegation structure, when to answer or delegate, and what makes a good voice agent.

What Is Prompt Caching? How It Cuts AI Costs

Prompt caching stores and reuses the work done on the unchanged opening of your prompt. Learn how it works, implicit vs. explicit caching, the break-even math, and four mistakes that break the cache.

What Are AI Evals? How to Tell If Your Prompt Change Helped

What AI evals are, the three building blocks (dataset, criteria, grader), a five-step before-and-after test for prompt changes, rules vs AI judges vs people, and the OpenAI Evals shutdown timeline.