Compare AI tools

	Taskade B	Symphony A	OpenRouter S	NotebookLM S
Tagline	AI project management with agents for each team.	OpenAI's open-source daemon that turns your Linear board into an always-on coding agent factory — tickets go in, pull requests come out.	One API, every model. Pay-as-you-go, no subscriptions.	Google's research notebook. Turns your docs into a podcast.
Category	Productivity	Agents	Dev Platform	Research
Pricing	Free + $8-$20/user/mo	Free (open-source)	Pay per token — model-dependent	Free
Best for	Small teams wanting AI baked into project management.	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.	Developers experimenting across models. Apps that want fallback logic.	Students, researchers, anyone with a stack of PDFs or a topic to learn.
Strengths	Custom AI agents per project Doc + tasks + kanban in one Affordable for teams	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	300+ models from one endpoint Automatic fallbacks between providers No subscription — just pay what you use	Upload anything, ask questions, get cited answers Audio Overview turns docs into a 10-min podcast Great for studying
Weaknesses	Feature sprawl AI agents need tuning to be useful	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	Slight markup over direct API Some provider features not exposed	Google-only Can be slow on large corpora
Kai's verdict	B-tier. Solid product but crowded market. Try it if Notion AI feels too generic.	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 for model-shopping. I use this for every prototype before committing.	S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.
Link	Open →	Open →	Open →	Open →