Compare AI tools

	NotebookLM S	Sora A	ChatGPT Operator B	HeyGen S
Tagline	Google's research notebook. Turns your docs into a podcast.	OpenAI's video model. Long clips, cinematic quality.	OpenAI's browser agent. Clicks and types on websites for you.	AI avatar videos. Record once, speak any language.
Category	Research	Video	Agents	Video
Pricing	Free	Included with ChatGPT Plus/Pro	Included with ChatGPT Pro $200/mo	Free + $24-$65/mo
Best for	Students, researchers, anyone with a stack of PDFs or a topic to learn.	ChatGPT subscribers experimenting with cinematic shots.	Power users willing to pay $200/mo for a browser bot.	Course creators, multilingual marketers, anyone scaling video content.
Strengths	Upload anything, ask questions, get cited answers Audio Overview turns docs into a 10-min podcast Great for studying	Up to 20-sec clips at 1080p Strong physics + scene composition Storyboard feature for longer narratives Remix existing videos	Actually uses websites — fills forms, clicks, checks out Built into ChatGPT Good for repetitive web tasks	Clone your face + voice in 2 minutes Instant translation into 40+ languages with lip sync Avatars look less uncanny than competitors
Weaknesses	Google-only Can be slow on large corpora	Stricter content policy than competitors Hit-or-miss on complex motion Text-in-video still struggles	Slow vs doing it yourself Breaks on complex auth flows $200/mo gate	Pricey for serious volume Long shots still feel off Ethics — easy to misuse
Kai's verdict	S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.	A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.	B-tier. Still early. Manus is more flexible for less money.	S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.
Link	Open →	Open →	Open →	Open →