Compare AI tools

	Symphony A	Runway S	GitHub Copilot B	Suno S
Tagline	OpenAI's open-source daemon that turns your Linear board into an always-on coding agent factory — tickets go in, pull requests come out.	The pro's AI video tool. Gen-4 is the current bar.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	Prompt to full song with vocals, instruments, the works.
Category	Agents	Video	Coding	Audio
Pricing	Free (open-source)	Free + $15-$95/mo	Free (limited) + $10/mo Pro + $19/mo Business	Free + $10/mo + $30/mo
Best for	Engineering teams already using Linear + OpenAI Codex who want to stop babysitting agent sessions and instead let the issue tracker drive autonomous coding at scale.	Marketing video, pitch decks, b-roll, creative shorts.	Teams with GitHub already. Devs who don't want to change IDEs.	Jingles, intros, demos, sketches, personal use.
Strengths	Fully autonomous ticket-to-PR pipeline: every open Linear issue gets its own isolated Codex agent without manual supervision Fault-tolerant Elixir/OTP architecture automatically restarts crashed agents and manages hundreds of concurrent runs WORKFLOW.md keeps all orchestration policy version-controlled inside the repo, so agent behavior is reproducible and reviewable like code Proven internal results: OpenAI reported a 500% increase in landed PRs on some teams within three weeks Open spec encourages community re-implementations in any language, not just Elixir	Most mature video workflow Character consistency via Act-One Gen-4 quality is production-grade	Great enterprise story Works in your existing IDE Chat + autocomplete	Real songs with real lyrics v4 is very good Quick turnaround
Weaknesses	Currently only supports Linear as an issue tracker — GitHub Issues and Jira integrations are not yet official Only OpenAI Codex is officially supported as the agent runtime; other model integrations are community-contributed and incomplete Self-hosted, Elixir-dependent engineering preview with no built-in sandboxing — not suitable for untrusted or production environments out of the box	Expensive at scale Still needs post-editing	Less agentic than Cursor/Claude Code Model quality varies	Copyright gray zone Audio quality behind studio
Kai's verdict	Symphony is the most architecturally serious 'issue tracker as control plane' approach yet — 15K GitHub stars in weeks confirms the idea resonates — but it's still a rough, self-hosted engineering preview that demands Elixir chops and a Linear-only workflow. (Verdict pending Phi's full review.)	S-tier. Market leader with reason. Start here for serious video.	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	S-tier in its category. The first AI music tool I'd actually listen to.
Link	Open →	Open →	Open →	Open →