Symphony: An open-source agent orchestrator for coding tasks
Symphony turns an issue tracker into a control plane for coding agents, automating task assignment and execution.
Symphony is an open-source specification for an agent orchestrator. It transforms a project management board, like Linear, into a control plane for coding agents.
Automating the orchestration of coding agents, managing continuous agent execution, and handling task assignment and restarts.
Free (open-source)
https://openai.com/index/open-source-codex-orchestration-symphony
Symphony is an open-source agent orchestrator that uses an issue tracker as a control plane. It assigns agents to open tasks, runs them continuously, and handles restarts, aiming to reduce human context switching and increase output.
By treating the issue tracker as a state machine and mapping each issue to a dedicated agent workspace, Symphony automates the workflow. Agents pull work, execute tasks, and can even create new tasks, reducing the need for constant human supervision.
- An open-source spec for orchestration: Symphony ↗OpenAI · OpenAI News · Apr 26, 2026 · paraphrased
First seen on Subvolts Apr 26, 2026. Updated Sep 11, 2026. Spotted a problem? Tell us.
- An open-source spec for orchestration: SymphonyOpenAI · OpenAI News · Apr 26, 2026
The Playbook: reusable how-tos, prompts, configs and tips pulled out of the news.
- HeuristicUse issue trackers as control planes for AI agentsLeverage your issue tracker as a central control plane to manage and orchestrate AI agentic work. · 10 min
- HeuristicConsider engineering constraints beyond functional correctness for AI agentsAI coding agents must follow developer-defined constraints like scope, order, validation, tool use, and reporting, not just produce working code. · 5 min
- ChecklistSWE-Duel Agent Evaluation CriteriaCriteria for admitting a pull request and for a Blue agent to win in the SWE-Duel arena. · 5 min
- Cost tipReduce AI coding costs with CliffCompactionCut AI coding costs up to 50% for long tasks by compacting context without rephrasing. · 15 min
- ToolGameLogicBench for evaluating AI game logic codingA benchmark to evaluate AI agents on runtime game logic with tick-level state assertions in Godot projects. · 10 min
- HeuristicSelf-Scaling Benchmarks for Coding AgentsBenchmarks should create tasks at evaluation time to prevent data leakage and adapt difficulty based on agent performance. · 5 min
Questions people ask
- Which AI tools does this work with?
- Any current model. It was seen with in the sources.
- Where did this come from?
- OpenAI (OpenAI News). Subvolts collected, normalized and credited it; the link above opens the original.