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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 (3 selected)
Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Manus
S
Claude Agent SDK
S
Sora
A
TaglineAutonomous AI agent that actually finishes tasks.Anthropic's SDK for building your own agents on Claude.OpenAI's video model. Long clips, cinematic quality.
CategoryAgentsAgentsVideo
PricingFree tier + $39-$199/moAPI usage + SDK is freeIncluded 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.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
  • 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
  • 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.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.
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