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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
Replicate
S
Recraft
S
Runway
S
Pika
A
TaglineRun any open-source AI model with an API call.Vector + raster AI for designers. Actually controls the output.The pro's AI video tool. Gen-4 is the current bar.The playful, accessible AI video tool.
CategoryDev PlatformImageVideoVideo
PricingPay per second of computeFree + $12-$48/moFree + $15-$95/moFree + $8-$58/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Designers, brand teams, anyone needing vector output or tight style control.Marketing video, pitch decks, b-roll, creative shorts.Social media creators, beginners, anyone wanting quick fun clips.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Exports SVG vectors — rare in AI image gen
  • Strong style control + consistency
  • Brand kit for consistent outputs
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
  • Ingredients feature — combine people, objects, scenes
  • Lip sync + sound effects
  • Fun, approachable UX
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Less hyped than Midjourney
  • Learning curve for non-designers
  • Expensive at scale
  • Still needs post-editing
  • Lower fidelity than Runway/Kling
  • Still rough on complex scenes
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier for designers. The only one that takes vectors seriously.S-tier. Market leader with reason. Start here for serious video.A-tier for social/casual. B-tier for serious work. Good entry point.
LinkOpen →Open →Open →Open →