Compare AI tools

	Taskade B	Manus S	Symphony A	NotebookLM S
Tagline	AI project management with agents for each team.	Autonomous AI agent that actually finishes tasks.	OpenAI's open-source daemon that turns your Linear board into an always-on coding agent factory — tickets go in, pull requests come out.	Google's research notebook. Turns your docs into a podcast.
Category	Productivity	Agents	Agents	Research
Pricing	Free + $8-$20/user/mo	Free tier + $39-$199/mo	Free (open-source)	Free
Best for	Small teams wanting AI baked into project management.	People who want to hand off tasks entirely — trip planning, research, spreadsheet building.	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.	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	General-purpose agent — research, book, build, analyze Parallel task execution Web browsing + file creation + coding	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	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	Still hit-or-miss on complex multi-hour tasks Can burn credits fast	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	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.	S-tier in the agent category. The first one I'd give to a non-technical friend.	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 study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.
Link	Open →	Open →	Open →	Open →