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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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Elicit
S
Luma Dream Machine
A
Grammarly
A
TaglineAI research assistant for academic literature.Smooth, cinematic motion. Image-to-video specialist.Grammar check + tone + AI drafting, everywhere you type.
CategoryResearchVideoWriting
PricingFree + $12-$42/moFree + $10-$500/moFree + $12-$15/mo Premium + team plans
Best forGrad students, researchers, anyone doing literature reviews.Photographers animating stills, cinematic b-roll.Non-native English writers, business email, anyone who types a lot.
Strengths
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • Best image-to-video in the category
  • Great camera motion control
  • Ray 2 model produces striking shots
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
Weaknesses
  • Academic-only
  • Can hallucinate citations — verify everything
  • Prompt fidelity below Runway
  • Queue times on free tier
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
Kai's verdictS-tier for academic research. Nothing else comes close for systematic reviews.A-tier. Best for cinematic image-to-video. Pair with Runway for coverage.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.
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