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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.
Pick tools (4 selected)
Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Manus
S
Claude Agent SDK
S
ChatGPT Operator
B
Sora
A
TaglineAutonomous AI agent that actually finishes tasks.Anthropic's SDK for building your own agents on Claude.OpenAI's browser agent. Clicks and types on websites for you.OpenAI's video model. Long clips, cinematic quality.
CategoryAgentsAgentsAgentsVideo
PricingFree tier + $39-$199/moAPI usage + SDK is freeIncluded with ChatGPT Pro $200/moIncluded with ChatGPT Plus/Pro
Best forPeople who want to hand off tasks entirely — trip planning, research, spreadsheet building.Developers building custom agents for their own company/product.Power users willing to pay $200/mo for a browser bot.ChatGPT subscribers experimenting with cinematic shots.
Strengths
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
Weaknesses
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Developer-only
  • You build the UI
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
Kai's verdictS-tier in the agent category. The first one I'd give to a non-technical friend.S-tier for builders. The right primitives. What Kai is built on under the hood.B-tier. Still early. Manus is more flexible for less money.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.
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