Compare AI tools

	Symphony A	Suno S	ChatGPT Operator B	Ollama 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.	Prompt to full song with vocals, instruments, the works.	OpenAI's browser agent. Clicks and types on websites for you.	Run LLMs locally. One-line install, GUI optional.
Category	Agents	Audio	Agents	Dev Platform
Pricing	Free (open-source)	Free + $10/mo + $30/mo	Included with ChatGPT Pro $200/mo	Free + open source
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.	Jingles, intros, demos, sketches, personal use.	Power users willing to pay $200/mo for a browser bot.	Devs wanting offline/local LLMs for privacy or experimentation.
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	Real songs with real lyrics v4 is very good Quick turnaround	Actually uses websites — fills forms, clicks, checks out Built into ChatGPT Good for repetitive web tasks	Run Llama, Mistral, Qwen, etc. on your laptop Simple CLI + API Hardware-aware (picks the right quant)
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	Copyright gray zone Audio quality behind studio	Slow vs doing it yourself Breaks on complex auth flows $200/mo gate	Needs beefy laptop for larger models Speed way behind cloud APIs
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 in its category. The first AI music tool I'd actually listen to.	B-tier. Still early. Manus is more flexible for less money.	S-tier for local inference. If you care about privacy or want to tinker, install this today.
Link	Open →	Open →	Open →	Open →