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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
Gemini
A
ChatGPT
S
TaglineRun any open-source AI model with an API call.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Google's answer. Best integrated with Workspace + free for a lot.The default. Strongest ecosystem + best multimodal breadth.
Categorydev platformcodingchatchat
PricingPay per second of computeFree (limited) + $10/mo Pro + $19/mo BusinessFree + $20/mo Advanced (bundled with 2TB Drive)Free + $20/mo Plus + $200/mo Pro
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Teams with GitHub already. Devs who don't want to change IDEs.Anyone already on Google, research tasks, summarizing long documents.General use, voice chat, image generation, first-time AI users.
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
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Great voice mode
  • Huge plugin/custom GPT ecosystem
  • Strong image generation (DALL-E built in)
  • Code Interpreter
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Reasoning quality varies by mode
  • Can be verbose
  • Confabulates on niche facts
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. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.S-tier all-rounder. If you want one tool that does everything okay-to-great, this is it.
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