Anthropic ships Claude Opus 4.8 with 2.5x faster mode and parallel subagents

Anthropic made dynamic workflows generally available in Claude Code. The feature enables the system to address complex tasks from start to finish through orchestration scripts that run tens to hundreds of parallel subagents in one session while checking results before delivery. Dynamic workflows target work too large for one agent. Examples include bug hunts across services, migrations that touch hundreds of files, and plans that require evaluation from multiple angles before commitment. The capability runs in the Claude Code CLI, Desktop, and VS Code extension for Pro, Max, Team, and Enterprise plans. It is also accessible via the Claude API on Amazon Bedrock, Vertex AI, and Microsoft Foundry. Users should note that dynamic workflows can consume substantially more tokens than typical sessions. Anthropic recommends beginning with a scoped task to assess usage. Early access users and internal teams applied the workflows to codebase wide bug hunts, security audits, large migrations, and critical tasks that benefit from independent verification. One reported case involved porting Bun from Zig to Rust, which produced roughly 750,000 lines of Rust code, passed 99.8 percent of the existing test suite, and reached merge in eleven days through parallel agent work on mappings, file ports, and fix loops. A workflow starts when Claude plans dynamically from the prompt and divides the effort into subtasks assigned to parallel subagents. Results undergo checks and iterative refinement by agents that approach the problem from independent angles and attempt to refute findings until the outputs converge. Progress saves continuously during execution so that interrupted runs resume at the prior point. The feature is on by default for Max, Team, and Enterprise plans and API use. Pro plan users enable it in the config settings. To begin, a user can ask Claude to create a workflow or activate the ultracode setting at xhigh effort level. Organization admins retain the option to disable workflows through managed settings.