Claude Opus 4.8: What Actually Changed for AI Agent Builders

Anthropic launched Claude Opus 4.8 on May 28, 2026, just weeks after 4.7.

The new model improves coding, long-context, and self-checking performance, with stronger benchmark results and better mistake flagging.

Pricing stays unchanged from 4.7, which helps keep adoption costs stable for builders.

Claude Code also gets a research-preview dynamic workflows feature, but it may significantly raise token usage.