The system prompt for OpenAI’s Codex CLI contains a perplexing and repeated warning for the most recent GPT model to “never talk about goblins, gremlins, raccoons, trolls, ogres, pigeons, or other ...

Claude Fable 5 system prompt leaked on GitHub within 24 hours, exposing 120,000 characters of hidden rules, safety limits, ...

Anthropic Claude provides open access to their system-wide prompt. I analyze the portions dealing with AI mental health guidance. An AI Insider analysis and scoop.

GPT-5’s system prompt just leaked to Github, showing what OpenAI wants ChatGPT to say, do, remember … and not do. Unsurprisingly, GPT-5 isn’t allowed to reproduce song lyrics or any other copyrighted ...

Anthropic released the underlying system prompts that control their Claude chatbot’s responses, showing how they are tuned to be engaging to humans with encouraging and judgment-free dialog that ...

On Sunday, independent AI researcher Simon Willison published a detailed analysis of Anthropic’s newly released system prompts for Claude 4’s Opus 4 and Sonnet 4 models, offering insights into how ...

Prompt engineering is the process of crafting inputs, or prompts, to a generative AI system that lead to the system producing better outputs. That sounds simple on the surface, but because LLMs and ...

Learn prompt engineering with this practical cheat sheet that covers frameworks, techniques, and tips for producing more accurate and useful AI outputs. Every day, millions of people type something ...

Brad Menezes, CEO of enterprise vibe-coding startup Superblocks, believes the next crop of billion-dollar startup ideas is hiding in almost plain sight: the system prompts used by existing unicorn AI ...