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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Perplexity
S
Sora
A
Claude Agent SDK
S
Manus
S
TaglineAI search done right. Cited answers, not chat theater.OpenAI's video model. Long clips, cinematic quality.Anthropic's SDK for building your own agents on Claude.Autonomous AI agent that actually finishes tasks.
CategoryResearchVideoAgentsAgents
PricingFree + $20/mo ProIncluded with ChatGPT Plus/ProAPI usage + SDK is freeFree tier + $39-$199/mo
Best forReplacing Google for any question where you want a cited answer in seconds.ChatGPT subscribers experimenting with cinematic shots.Developers building custom agents for their own company/product.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Developer-only
  • You build the UI
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier for builders. The right primitives. What Kai is built on under the hood.S-tier in the agent category. The first one I'd give to a non-technical friend.
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