I'm a doctor and I had a custom gem in Gemini 2.5 that acted as my on-call assistant. It had a defined persona, but attached to its knowledge base were some docx files with customized instructions (commands) that I asked this character to execute. It was like a protocol for triangulated scientific information searches. When I had a question on duty about which medication to administer, I would ask the gem to execute a command that would search the internet for official guidelines to answer my question, then consult my books attached to the gem to find the answer, perform an analysis from a different perspective (different resource scenarios, etc.), and compare the three vertices. It was a dense command, about 7 pages, in addition to other commands just as large. When using the gem in version 3.0 Pro, this interaction via reading the docx file started to fail, and to resolve this I compiled the instructions from the old gem and all the documents with descriptions of each command into one, and I'm amazed! The instruction box for building a custom gem in Gemini 3.0 Pro accepted SEVENTEEN pages of instructions and RAN PERFECTLY! I'm speechless at this model! It managed to be faithful to the extremely dense and complex instructions and still responded relatively quickly (30-90 seconds).
The instruction box for building a custom gem in Gemini 3.0 Pro accepted SEVENTEEN pages of instructions
