What it changes for you
Because this alias tracks the leading Gemini Pro model, the answers it gives about your category will shift whenever Google updates underneath, without any announcement in your logs. That makes one-off citation checks unreliable, you need repeated monitoring of how your brand is described across Gemini surfaces. The upside is that whatever earns citations in the current Pro model earns them here too, so the work is the same work, just measured more often.
Where buyers meet this model
Buyers meet the Gemini Pro family through the Gemini consumer app and through Google surfaces that run on it, usually without seeing a model name at all. Developers meet this particular entry in the Gemini API, where it appears as a model option alongside the pinned versions. In practice, anyone using the latest Pro tier in a Google product is seeing the same capability this alias resolves to.