Bernstein - Multi-agent orchestration

What is Bernstein - Multi-agent orchestration?

Bernstein is an open-source deterministic orchestrator designed specifically for CLI coding agents. It enables developers to run multiple AI coding agents, including Claude Code, Codex, and Gemini CLI, simultaneously across parallel git worktrees. By keeping AI models out of the coordination loop, Bernstein ensures that all runs are byte-identical and reproducible. This allows code reviewers to verify outputs by examining execution records offline without needing to rerun the agents. The tool is targeted at development teams and individual engineers who need reliable, auditable automation for code generation and refactoring tasks where deterministic behavior and reviewability are critical.

Key features

• Open-source deterministic orchestrator for CLI coding agents
• Runs 40+ agents including Claude Code, Codex, and Gemini CLI
• Executes agents in parallel git worktrees
• No AI model in coordination loop for byte-identical replays
• Offline review of execution records without rerunning

Use cases

• Parallel code generation across multiple AI models
• Automated code refactoring with reproducible results
• Code review verification through deterministic execution logs
• Testing different coding agents on the same project
• Batch processing of coding tasks with audit trails