Dossier
Codex CLI
Coverage of Codex CLI in the Nexus archive.
- OpenAI Codex system prompt includes explicit directive to "never talk about goblins"
OpenAI's Codex system prompt for the latest GPT-5.5 model explicitly prohibits mentioning goblins, gremlins, and other creatures unless directly relevant to user queries. The directive, absent in earlier models, emerged in a 3,500-word base instruction set and follows user complaints about the model's recent focus on unrelated goblin references.
- I ran Gemma 4 as a local model in Codex CLI
The article discusses running Gemma 4 as a local model using Codex CLI. It highlights the technical implementation and availability of the model through a CLI tool.