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Compare AI tools

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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Writesonic
B
Claude Code
S
Google Veo
A
OpenRouter
S
TaglineSEO-first AI writer. Optimized for ranking content.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Google's video model. Baked into Gemini + YouTube Shorts.One API, every model. Pay-as-you-go, no subscriptions.
CategoryMarketingCodingVideoDev Platform
PricingFree + $15-$99/moPart of Claude Pro/Max/Team plansIncluded with Gemini Advanced $20/mo + YouTube creator toolsPay per token — model-dependent
Best forContent marketers churning out SEO articles.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Gemini Advanced users, YouTube Shorts creators.Developers experimenting across models. Apps that want fallback logic.
Strengths
  • SEO built-in (Surfer integration)
  • Article generator for long-form
  • Chatsonic for research
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Included with Gemini Advanced
  • YouTube Shorts native integration
  • Strong prompt understanding
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
Weaknesses
  • Output quality behind Claude for polish
  • SEO automation can produce generic content
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Still catching up on quality vs Kling/Runway
  • Less control than pros need
  • Slight markup over direct API
  • Some provider features not exposed
Kai's verdictB-tier. Use Claude + manual SEO thinking. Writesonic is fast but generic.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.A-tier if you already pay Gemini. B-tier standalone.S-tier for model-shopping. I use this for every prototype before committing.
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