Building with the Claude 5.5 Family: Choosing the Right Model and Getting More from Every Token

Claude Sonnet 5.5 joins Opus 5.5 on the Claude Platform as a faster, lower-cost complement. 

In this session, Anthropic’s research team walks through how we built the 5.5 models and what we found in testing. You’ll learn which workloads still gain the most from frontier intelligence, and which are ready to run faster and cheaper.

Then our Applied AI team puts it into practice. We’ll show how to build evals from your own tasks, use them to choose the right model and hill-climb on quality, and bring cost per task down with effort levels, prompt caching, and orchestration. Send your questions when you register or in chat during the session.