GPT-5.6 Pays You to Delete Your System Prompt: State Every Rule Once and Stop Repeating Yourself
OpenAI's own tests show trimming duplicated instructions raises scores 10-15% while cutting tokens up to 66%. Your old scaffolding is now a tax.
Brian Gagne
CTO of Kief Studio. 20+ years technology consulting. Cisco Certified Ethical Hacker, UPenn AI for Business, Perplexity AI Business Fellow. Builds the tools Qurtoo teaches you to use.
https://kief.studio83 articles
Magentic Just Hit 1.0 — And Your Whole Agent Team Lives or Dies by the Manager's Ledger Prompt
Microsoft Agent Framework's magentic pattern lets a manager invent the workflow at runtime. Here's the ledger prompt that makes it converge instead of loop forever.
Chain-of-Thought Is Sabotaging Your Model's Sense of Direction: Prompt Grids as Symbols, Not Sentences
Seventeen models, thirteen spatial benchmarks, one verdict: "think step by step" makes maps, mazes, and layouts worse. Here's what to send instead.
Your Agent's 'Done' Is a Lie: Gate Completion on Disk Evidence, Not Its Final Message
Steal the validation-gated completion pattern from this week's Paper-replication skill and make every agent attach a receipt before it stops.
Your Agent's Planner Is Fine. Its Aggregator Is What's Broken
ROMA hit state-of-the-art on SealQA by compressing every subtask tree before it bubbles up. Here are the four node prompts you can copy without adopting the framework.
Stop Trusting Free-Form Chain-of-Thought. Make Your Model Sign a Logical Certificate Instead
Meta's semi-formal reasoning template forces premises, traced paths, and a derived conclusion -- so you can see exactly where the model is bluffing.
Your Agent Reads the Transcript Twice: Stop Piping Tool Outputs Through Context and Filter Them in Code
The 'response bloat' tax quietly doubles your token bill. Here's the prompt pattern that keeps raw tool payloads out of the model's working memory.
Marc Andreessen Told His AI to 'Never Hallucinate.' Here's the Four-Line Scaffold That Actually Works
You can't command next-token prediction into honesty, but you can engineer the conditions where it stops guessing.
Stop Prompting Your Agent. Engineer the Loop That Prompts It
The four standing prompts behind Boris Cherny's "loop engineering" -- find-work, do-work, verify, remember -- with copy-paste scaffolds and the guardrails that keep them from running rogue.
Chain-of-Thought Assumes Left-to-Right. Mercury 2 Doesn't: How to Prompt a Diffusion LLM by Handing It a Skeleton, Not a Trail
Diffusion models like Inception's new Mercury 2 refine the whole answer in parallel, so scaffold the output shape instead of nudging a linear reasoning chain.
Your Agent Should Write Python, Not Emit JSON: Prompting for CodeAct Now That It Ships in Microsoft Agent Framework
BUILD 2026 made code-as-action a first-class pattern. Here's how to rewrite your tool-use prompts from "pick a tool" to "write code that calls the tools" and cut tokens 30-50%.
Delete Your Temperature Parameter: Why Self-Consistency Sampling Is Dead on Reasoning Models Like Gemini 3.5 Flash
Google's migration guide quietly killed the majority-vote trick you've leaned on for years. Here's what replaces it.