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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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S
Sora
A
Ideogram
S
Grammarly
A
TaglineRun any open-source AI model with an API call.OpenAI's video model. Long clips, cinematic quality.The one that actually gets text in images right.Grammar check + tone + AI drafting, everywhere you type.
Categorydev platformvideoimagewriting
PricingPay per second of computeIncluded with ChatGPT Plus/ProFree + $8/mo + $20/mo + $60/moFree + $12-$15/mo Premium + team plans
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).ChatGPT subscribers experimenting with cinematic shots.Anything with text — posters, ads, album covers, slide decks.Non-native English writers, business email, anyone who types a lot.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Best text rendering in the game
  • Strong free tier
  • Good for logos, posters, thumbnails
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Aesthetic ceiling below Midjourney
  • Less style variety
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier for text-in-image. Use this for posters, Midjourney for art.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.
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