Claude Opus 4.8 Brings Dynamic Workflows, Effort Control, and Better Judgment for Agentic Work
On May 28, 2026, Anthropic released Claude Opus 4.8, an upgrade to its most capable model that builds on Opus 4.7 with benchmark improvements, better judgment in agentic tasks, and three new features: dynamic workflows for Claude Code, effort control for claude.ai users, and a Messages API update that lets developers update Claude’s instructions mid-task….