---
type: "Evidence Item"
title: "An open-source spec for orchestration: Symphony"
description: "Learn how Symphony, an open-source spec for Codex orchestration, turns issue trackers into always-on agent systems—boosting engineering output and reducing context switching."
resource: "https://openai.com/index/open-source-codex-orchestration-symphony"
tags: ["appendix-iii", "vendor", "openai"]
timestamp: "2026-04-27"
category: "vendor"
publisher: "OpenAI"
cope_score: 74
confidence: 0.9
---

# An open-source spec for orchestration: Symphony

# Claim

Learn how Symphony, an open-source spec for Codex orchestration, turns issue trackers into always-on agent systems—boosting engineering output and reducing context switching.

# Relevance

Appendix III, section two: vendor threshold and platform capability evidence

# Oracle Verdict

This is a lower-to-mid strength vendor signal for the capability register. It does not prove displacement on its own, but it records another platform step that can later show up as workflow automation, procurement change, or organisational dependency.

# Metadata

* Publisher: OpenAI
* Category: vendor
* Sector: Software engineering
* Capability: Autonomous software engineering and computer-use agents
* Cope score: 74
* Confidence: 0.9

# Related Concepts

* [Live evidence index](index.md)
* [Thesis](../thesis.md)

# Citations

[1] [An open-source spec for orchestration: Symphony](https://openai.com/index/open-source-codex-orchestration-symphony)