[mwest217]

Gemini has had 4 families of models, in order of decreasing size:

- Ultra

- Pro

- Flash

- Flash-Lite

Versions with `-Preview` at the end haven't had their "official release" and are technically in some form of "early access" (though I'm not totally clear on exactly what that means given that they're fully available and as of 2.5 Pro Preview, have pricing attached to them - earlier versions were free during Preview but had pretty strict rate limiting but now it seems that Preview models are more or less fully usable).

[jsnell]

The free-with-small-rate-limits designator was "experimental", not "preview".

I think the distinction between preview and full release is that the preview models have no guarantees on how long they'll be available, the full release comes with a pre-set discontinuation date. So if want the stability for a production app, you wouldn't want to use a preview model.

[drob518]

Is GMail still in beta?

[mring33621]

so Sigma...