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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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TaglineRun any open-source AI model with an API call.VS Code fork that made AI coding actually work.Prompt to full song with vocals, instruments, the works.The one that actually gets text in images right.
Categorydev platformcodingaudioimage
PricingPay per second of computeFree + $20/mo Pro + $40/mo BusinessFree + $10/mo + $30/moFree + $8/mo + $20/mo + $60/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Developers. Non-developers who want to ship working code.Jingles, intros, demos, sketches, personal use.Anything with text — posters, ads, album covers, slide decks.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Copyright gray zone
  • Audio quality behind studio
  • Aesthetic ceiling below Midjourney
  • Less style variety
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier in its category. The first AI music tool I'd actually listen to.S-tier for text-in-image. Use this for posters, Midjourney for art.
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