Introducing Halo 2

A calmer default

Halo 2 is the model we wanted the first version to grow into. It holds a longer brief, answers with less ceremony, and stays on the same API.

Most of the work was not a new trick. It was cutting the cases where Halo 1 sounded sure and was not. The new default is a little slower to claim, and much faster to finish.

If you already call Halo, you do not have to change the request. The model id halo-2 is live, and halo-1 stays available until the end of the year.