Week 22 ยท May 25โ29, 2026 ยท v2.1.150โv2.1.157
Claude Opus 4.8 is now the default model for Max, Team Premium, Enterprise pay-as-you-go, and API accounts โ high effort on by default, with /effort xhigh for the hardest tasks.
Week 22 ยท May 25โ29, 2026
Dynamic workflows let Claude write and execute a script that orchestrates dozens to hundreds of subagents โ replacing one-shot prompts with structured multi-agent plans.
Week 22 ยท May 25โ29, 2026
Security-guidance plugin reviews Claude's code changes for vulnerabilities in real time as it works โ think of it as a live security co-pilot running alongside every edit.
Week 22 ยท May 25โ29, 2026
Fast mode on Opus 4.8 is now available at $10/$50 per MTok input/output โ the same speed tier, now on the most capable generally available model.