Microsoft Open-Sources Conductor: YAML-Driven Deterministic Multi-Agent Orchestrator With Cross-Provider Support

Microsoft Open Source Blog·medium signal

Microsoft released Conductor (MIT license) on May 14, a CLI tool for defining multi-agent workflows in YAML with deterministic routing via Jinja2 templates — zero tokens consumed by the orchestration layer. Conductor supports mixing GitHub Copilot and Anthropic Claude providers per-agent (e.g., claude-haiku-4.5 for classification, gpt-5.2 for research with MCP tool access, claude-opus-4.6-1m for reasoning). Features include static parallel groups with configurable failure modes, dynamic for-each with batched concurrency, human approval gates, and a built-in real-time web dashboard.