Gemini 3 (Flash) in DT 4.2

Apologies for starting yet another thread about AI models in DEVONthink, but I’d be interested in hearing other people’s experiences with the Gemini 3 models in the latest DEVONthink update.

I have previously used Gemini 2.5 Flash via OpenRouter to summarize annotations from PDFs (with a detailed prompt explaining the formatting, detail level, etc.). I was quite impressed by both the speed and the quality of the output. Given everyone’s praise of Gemini 3, I was excited to try whether it would get even better. However, Gemini 3 Flash’s summaries are consistently much shorter and omit important details, even when adjusting my prompt to specifically ask for an extremely detailed summary or requesting a minimum word count.

I’m wondering whether I would get better results through Google’s API, but I don’t really see why that would be the case. In comparison, with the same prompt I still get usable summaries from various OpenAI and Anthropic models, both through their respective APIs and through OpenRouter.

Has anyone made similar experiences with Gemini 3?

Try changing the AI > Chat > Usage settings to Best. Also, a newer model doesn’t necessarily mean it’s better than a previous model in all aspects. Look at GPT5 compared to GPT4. GPT5 was quite the resounding flop.