Anthropic Releases Sonnet 5.5, Second Model in Claude 5.5 Series

The pricing tier matters more than the speed claim: a cheaper Sonnet sitting under Opus 5.5 gives teams a reason to route routine workloads away from frontier models, which is where most token spend actually accumulates. For anyone building agent pipelines or RWA data tooling, cache-read pricing is the line worth studying, since it rewards architectures that reuse context rather than re-send it. The open question is where Haiku 5.5 lands once it arrives — a third tier could compress margins across the mid-range or push the whole series toward narrower, task-specific positioning.