# Microsoft open-sources Agensh, a harness for up to 1,024 agents

> Agensh lets AI agents coordinate through a shared Git repository, chat and findings board, without a central orchestrator. Microsoft says it scales to 1,024 agents on ProgramBench.

Oossa · 2026-10-25 · https://oossa.com/en/microsoft-open-sources-agensh-a-harness-for-up-to-1-024-agents

Microsoft Research has open-sourced Agensh, a system for coordinating groups of AI agents without a central controller assigning each task. The agents share a Git repository, chat and a board for findings, and can organize their work among themselves.

Microsoft says Agensh scales from one to 1,024 agents on ProgramBench, with a six-hour time budget. The announcement does not give performance results or explain which models were used, so the scale figure alone does not show how well the system performs.

## The facts

- Agensh supports teams of 1 to 1,024 agents, according to Microsoft Research.
- The ProgramBench run used a six-hour budget; the agents shared a Git repository, chat and findings board.

## Why it matters

For developers exploring multi-agent software, Agensh offers an open-source coordination setup to examine, but its practical performance is unclear without reported results or model details.

## Sources & references

1. [Microsoft Open-Sources Agensh: A Multi-Agent Harness for 1,024 Agents](https://www.marktechpost.com/2026/10/24/microsoft-agensh-multi-agent-harness-1024-agents/) – MarkTechPost, 2026-10-25

Last updated: 2026-10-25