Anthropic Claude 4.3 Sonnet Introduces Native Hierarchical Task Decomposition for Long-Horizon Agents
[AI-NEWS-ENTRY]
Date: 2026-02-19
Title: Anthropic Claude 4.3 Sonnet Introduces Native Hierarchical Task Decomposition for Long-Horizon Agents
Content: Claude 4.3 Sonnet adds built-in hierarchical task decomposition, allowing the model to automatically break multi-week or multi-month goals into sub-goals, milestones, contingency branches and verification checkpoints. Demonstrated completing simulated 30-day software product development cycles with only high-level product requirements as input.
Keywords: agentic AI, hierarchical planning, long-horizon reasoning, Claude 4.3, task decomposition, autonomous agents
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