MiroThinker is a reasoning-focused AI agent (from MiroMind) built as a large-parameter model and MiroMind OS to plan, execute, verify, and self-improve complex multi-step workflows using a DAG-based planner/executor with rollback/replan and formal state hashing; it integrates tool use (web browsing, code execution, document/RAG pipelines), enforces verification-centric traces for auditability, and continuously learns via policy-as-code, making it useful for high‑stakes tasks like production-ready code generation, legal and compliance analysis, financial engineering, and scientific research where stable, explainable, and auditable AI reasoning is required.