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[AINews] Anthropic raises $965B Series H, releases Opus 4.8 and Dynamic Workflows/ultracode

latent.space·May 29, 2026

Anthropic has announced a significant milestone, raising $65 billion in Series H funding with a post-money valuation of $965 billion, while also launching the updated Claude Opus 4.8, which features improved judgment and longer independent work capabilities. The company reported a run-rate revenue of $47 billion and introduced a new "Dynamic Workflows" feature in Claude Code that allows for the orchestration of hundreds of parallel subagents for complex tasks, positioning itself as a leader in enterprise AI solutions.

The most actionable insight for you is the introduction of Claude Code's "Dynamic Workflows" feature, also known as "ultracode," which allows for the orchestration of tasks by spawning hundreds of parallel subagents. This capability was crucial in Jarred Sumner's 750k LOC rewrite of Bun from Zig to Rust in just 6 days. This feature could significantly enhance productivity and efficiency in large-scale coding projects, aligning with your interest in AI productivity and agentic workflows.

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