OpenAI now has 5 overlapping custom instruction systems; user pleads for a merge
koltregaskes · x · 2026-11-15
User koltregaskes calls out that OpenAI has fragmented personalization into at least 5 overlapping systems: ChatGPT custom instructions, Codex custom instructions, agents.md, About Me, and the new Dot custom instructions (plus Dot-specific rules). Limits differ wildly: About Me 1,500 chars, custom instructions 5,000, Dot custom instructions 35,000. He publicly asks OpenAI to merge them, noting Claude has just one unified custom instructions field.
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