40% cheaper: https://platform.claude.com/docs/en/about-claude/pricing

But what about real price in real agentic use? For example, Opus 4.5 was more expensive per token than Sonnet 4.5, but it used a lot less tokens so final price per completed task was very close between the two, with Opus sometimes ending up cheaper

How does it work exactly? How this model is cheaper and has the same perf as Opus 4.5?

Distilling from a teacher (Opus 4.5) and scaling RL more.

this is called progress

I'm asking technically how progress works. What is actually being improved here

Or, we can bleed out cash for a very long time.