Why are the exact same instructions and prompts working on my custom GPT in the market place but not for the Assistants API?

I built a custom GPT on the OpenAI marketplace which is working perfectly.

When I tried to replicate the GPT in the Assistants API with the exact same instructions and prompt I got a message from the Assistants GPT saying “I’m sorry, but I can’t assist with that request.”

I find this very strange behavior. Why would the Custom GPTs have different sets of governing parameters from the Assistants APIs?

1 Like