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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
GitHub Copilot
B
Leonardo.ai
A
Gemini
A
TaglineRun any open-source AI model with an API call.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Gamer + creator image gen with model fine-tuning built in.Google's answer. Best integrated with Workspace + free for a lot.
Categorydev platformcodingimagechat
PricingPay per second of computeFree (limited) + $10/mo Pro + $19/mo BusinessFree + $12-$60/moFree + $20/mo Advanced (bundled with 2TB Drive)
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Teams with GitHub already. Devs who don't want to change IDEs.Indie game devs, illustrators, anyone training custom style models.Anyone already on Google, research tasks, summarizing long documents.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Train your own models on your style/character
  • Great for game art + concept art
  • Generous free tier
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • General output behind Midjourney
  • Can be overwhelming
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
Kai's verdictS-tier for open-source model APIs. The default in this space.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier for creators training custom looks. B-tier for general use.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
LinkOpen →Open →Open →Open →