Claude Opus 4.8 showing up the Agent SDK published to npm 20 mins ago: Claude Opus 4.8 — The most capable Claude model to date. Highly autonomous and state-of-the-art for long-horizon agentic work, knowledge work, and memory, with clearer, warmer writing. Uses the same API surface as Opus 4.7: Adaptive thinking only Sampling parameters removed budget_tokens removed 1M context window at standard API pricing No long-context premium See shared/model-migration.md → Migrating to Opus 4.8 A 4.7…