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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
DALL-E 3
B
Sora
A
Hume AI
A
Aider
A
TaglineOpenAI's image model. Built into ChatGPT Plus.OpenAI's video model. Long clips, cinematic quality.Voice AI that reads + expresses emotion.Terminal-based AI pair programmer. Git-aware, model-flexible.
CategoryImageVideoVoiceCoding
PricingIncluded with ChatGPT Plus $20/moIncluded with ChatGPT Plus/ProFree tier + pay-as-you-goFree (open source) + whatever API you use
Best forChatGPT Plus users who want images without paying extra.ChatGPT subscribers experimenting with cinematic shots.Therapy apps, customer service, any voice agent where emotion matters.Developers who want open-source tooling with full control.
Strengths
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
Weaknesses
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Niche use case
  • Pricing ramps fast
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
Kai's verdictB-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.A-tier in its niche. The only one that actually gets emotion right.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.
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