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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
Cline
A
Sora
A
OpenRouter
S
Replicate
S
TaglineOpen-source VS Code agent. Reads + writes + runs.OpenAI's video model. Long clips, cinematic quality.One API, every model. Pay-as-you-go, no subscriptions.Run any open-source AI model with an API call.
CategoryCodingVideoDev PlatformDev Platform
PricingFree (open source) + your API costsIncluded with ChatGPT Plus/ProPay per token — model-dependentPay per second of compute
Best forVS Code users who want agentic coding without changing IDEs.ChatGPT subscribers experimenting with cinematic shots.Developers experimenting across models. Apps that want fallback logic.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Slight markup over direct API
  • Some provider features not exposed
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictA-tier. Best free agentic option in VS Code. Use with Claude for best results.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier for model-shopping. I use this for every prototype before committing.S-tier for open-source model APIs. The default in this space.
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