Grok Code Fast 1: First Reactions

256k context and ~92 tokens/sec—xAI's coding model lands in GitHub Copilot public preview, aiming for speed at pennies per million tokens. This post covers what it is, why it's fast and cheap, best uses, where to try it, and what's next. Why

xAI's Prompt Engineering Guide for grok-code-fast-1

xAI recently released a prompt engineering guide for their new grok-code-fast-1 model. These guides are awesome ways to learn how to be a better day-to-day prompt engineer, not just with grok. Below are my takeaways after reading it. They are aimed to help with day-

Agent Client Protocol: The LSP for AI Coding Agents

What if switching between AI coding assistants was as easy as changing text editors? That's the promise of the Agent Client Protocol (ACP)—a new open standard that aims to do for AI agents what the Language Server Protocol did for programming languages. Just as LSP decoupled language

Which is Better: O3 or 4.5 ChatGPT?

When OpenAI made ChatGPT-O3 and ChatGPT-4.5 available simultaneously side by side in 2025, developers faced an intriguing choice: O3's systematic reasoning engine versus 4.5's conversational mastery. O3 built its reputation on deep reasoning, thinking longer, showing its work, and delivering analytical rigor.

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