Racers and fit club riders who want a low stack without full aero integration. If the Aeroad cockpit feels like too much, this is the sibling.
Canyon's lightweight race bike: snappy, precise, and less of a wind-cheater than the Aeroad. It rewards a committed position and calm hands in corners rather than a slammed aero tuck.
Riders who race or ride fast on rolling and flat roads and are happy with a long, low fit. Not the pick if you want a tall stack.
A deep-section race bike that wants speed. The cockpit is integrated and the front end is stiff; it holds a line in crosswinds better than older Aeroads, but it still feels like an aero bike.
Climbers and racers who want Cervelo without S5's deep aero cockpit. Soloist is the value race sibling.
Cervelo's lightweight race bike. It does not try to be an S5. Climbing, precise, and still a low WorldTour stack/reach chart.