In my experience with chat, Flash has gotten much, much better. It's my go-to model even though I'm paying for Pro.

Pro is frustrating because it too often won't search to find current information, and just gives stale results from before its training cutoff. Flash doesn't do this much anymore.

For coding I use Pro in Gemini CLI. It is amazing at coding, but I'm actually using it more to write design docs, decomp multi-week assignments down to daily and hourly tasks, and then feed those docs back to Gemini CLI to have it work through each task sequentially.

With a little structure like this, it can basically write its own context.