Anthropic has released a free one-hour crash course on building AI agents with its Claude Opus 5.5 model. The course covers agent architecture, skill-building, and a concept called agent dreaming, organized into four timestamped segments. Claude Opus 5.5, launched on September 22, 2026, performs at a level comparable to its predecessor at roughly 40% lower cost, approximately $4 per million tokens versus $20 for Opus 5. This price difference is particularly significant for agents, which may make dozens or hundreds of calls to complete a single task, compounding per-call savings. The training is part of Anthropic’s Academy, which hosts between 13 and 27 free courses on AI-related topics in 2026.
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