20th July 2023 - Link Blog
Prompt injected OpenAI's new Custom Instructions to see how it is implemented. ChatGPT added a new "custom instructions" feature today, which you can use to customize the system prompt used to control how it responds to you. swyx prompt-inject extracted the way it works:
The user provided the following information about themselves. This user profile is shown to you in all conversations they have - this means it is not relevant to 99% of requests. Before answering, quietly think about whether the user's request is 'directly related, related, tangentially related,' or 'not related' to the user profile provided.
I'm surprised to see OpenAI using "quietly think about..." in a prompt like this - I wouldn't have expected that language to be necessary.
Recent articles
- Perhaps not Boring Technology after all - 9th March 2026
- Can coding agents relicense open source through a “clean room” implementation of code? - 5th March 2026
- Something is afoot in the land of Qwen - 4th March 2026