Symphony
Stop supervising AI agents — let them run independently
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
—Overview
What is Symphony?
Symphony is OpenAI's open-source agentic coding framework released in March 2026. It turns software project work into isolated, autonomous 'implementation runs' — instead of supervising an AI coding agent, you define tasks in your issue tracker and Symphony dispatches parallel agents to each one in an isolated environment. Built on Elixir/BEAM for fault tolerance and concurrent agent management. Uses a WORKFLOW.md file in your repo as the agent's instruction set.
Key differentiator
“Stop supervising AI agents — let them run independently”
Capability profile
Strength Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
Fit analysis
Who is it for?
✓ Best for
Engineering teams who want to delegate batches of issues or features to autonomous coding agents without babysitting each run
✕ Not a fit for
Teams needing real-time collaboration with agents or those not yet using Linear/GitHub Issues as their workflow
Cost structure
Pricing
Free Tier
Available
Starts at
Free / Open Source
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Alternatives
Next step
Get Started with Symphony
Step-by-step setup guide with code examples and common gotchas.