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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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Coding
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Aider
A
Sora
A
Claude Code
S
Genspark
A
TaglineTerminal-based AI pair programmer. Git-aware, model-flexible.OpenAI's video model. Long clips, cinematic quality.Anthropic's CLI agent. Opus-powered, operates on your repo directly.AI agent for deep search. Generates Sparkpages — full mini-reports.
CategoryCodingVideoCodingResearch
PricingFree (open source) + whatever API you useIncluded with ChatGPT Plus/ProPart of Claude Pro/Max/Team plansFree + $25/mo Plus
Best forDevelopers who want open-source tooling with full control.ChatGPT subscribers experimenting with cinematic shots.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Travel planning, shopping comparisons, deep research where you want an artifact back.
Strengths
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
Weaknesses
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
Kai's verdictA-tier. The right answer if you want open-source + terminal-native + model-agnostic.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.A-tier. Bet on this one — the Sparkpage format is genuinely new.
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