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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
Sora
A
Fathom
S
Perplexity
S
Claude Agent SDK
S
TaglineOpenAI's video model. Long clips, cinematic quality.Meeting notes, free forever for individuals.AI search done right. Cited answers, not chat theater.Anthropic's SDK for building your own agents on Claude.
CategoryVideoMeetingsResearchAgents
PricingIncluded with ChatGPT Plus/ProFree for individuals + $15-$29/user/mo teamsFree + $20/mo ProAPI usage + SDK is free
Best forChatGPT subscribers experimenting with cinematic shots.Solo operators, freelancers, small teams on a budget.Replacing Google for any question where you want a cited answer in seconds.Developers building custom agents for their own company/product.
Strengths
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
Weaknesses
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Bot-joining model
  • Team features gated
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Developer-only
  • You build the UI
Kai's verdictA-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier for solo + free. The best free option, hands down.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for builders. The right primitives. What Kai is built on under the hood.
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