Gemini Gem 2.5 losing instructions over long sessions

Gemini API
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1

Not sure where to post this. Using Pro with enterprise data protection, and the ‘feedback’ report option isn’t there. Probably because that option says it bundles session history, which is disabled.

When creating a Gem with an instruction set, the Gemini API seems to be failing to pass the instruction set to the LLM with every request. And it seems like it would need to do this to stay true to the idea of the instruction set guiding the entire session, and not just the first query. I have a very specific set of instructions and evidence that they appear to not be included to the LLM after a few queries.

3

So… is this a know issue?
Feature not supported? (which would seem to invalidate the entire purpose of a ‘gem’?)
Other?

5

Hi @Austin_Rhymer,

Welcome to the Google AI Forum! :confetti_ball: :confetti_ball:

Are you still facing this issue?

7

Yes. I have a section that is supposed to report a data set at the end of each response. This falls off after a few queries in the same session. If I recall correctly, the LLM reports that the session summary didn’t include that portion of the instructions.