Compare AI tools

	Manus S	Sora A	Kling A	NotebookLM S
Tagline	Autonomous AI agent that actually finishes tasks.	OpenAI's video model. Long clips, cinematic quality.	Kuaishou's video model. The surprise standout.	Google's research notebook. Turns your docs into a podcast.
Category	Agents	Video	Video	Research
Pricing	Free tier + $39-$199/mo	Included with ChatGPT Plus/Pro	Credit-based, free trial	Free
Best for	People who want to hand off tasks entirely — trip planning, research, spreadsheet building.	ChatGPT subscribers experimenting with cinematic shots.	Anyone who wants top-tier video quality for less.	Students, researchers, anyone with a stack of PDFs or a topic to learn.
Strengths	General-purpose agent — research, book, build, analyze Parallel task execution Web browsing + file creation + coding	Up to 20-sec clips at 1080p Strong physics + scene composition Storyboard feature for longer narratives Remix existing videos	Very strong motion + physics Often beats Runway on realism Great price	Upload anything, ask questions, get cited answers Audio Overview turns docs into a 10-min podcast Great for studying
Weaknesses	Still hit-or-miss on complex multi-hour tasks Can burn credits fast	Stricter content policy than competitors Hit-or-miss on complex motion Text-in-video still struggles	UX is rough for English speakers Queue times	Google-only Can be slow on large corpora
Kai's verdict	S-tier in the agent category. The first one I'd give to a non-technical friend.	A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.	A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.	S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.
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