Claude Opus 4.8 dropped.

• 2.5x faster fast mode, which is also 3x cheaper • has a new “dynamic workflows” feature that allows it to tackle very large-scale problems. • 74.6% on agentic terminal coding is the biggest benchmark jump over Opus 4.7, rising from 66.1% • New “dynamic workflows” feature that allows it to tackle very large-scale problems. • The new leader on our GDPval-AA benchmark for agentic real-world work tasks

The dynamic workflows in Claude Code will break a massive engineering task into many smaller jobs, run them through tens to hundreds of parallel subagents, and check the results before handing anything back.

A normal coding agent works like one developer reading, editing, and testing in sequence, but dynamic workflows behave more like a temporary engineering team coordinated by Claude.

Claude first writes an orchestration plan, which is basically a task map that says what needs to be inspected, rewritten, tested, reviewed, or challenged.

Separate subagents then work on different parts of the repo at the same time, so one agent might inspect authentication code, another might port files, another might search for unsafe patterns, and another might try to break the proposed fix.

The major change is verification, because Claude does not just collect answers from subagents, but compares them, refutes weak findings, runs checks, and keeps iterating until the results converge.