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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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Groq
S
OpenRouter
S
GitHub Copilot
B
Claude Code
S
TaglineThe fastest AI inference in the world. Crazy low latency.One API, every model. Pay-as-you-go, no subscriptions.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Anthropic's CLI agent. Opus-powered, operates on your repo directly.
Categorydev platformdev platformcodingcoding
PricingFree tier + pay-as-you-go APIPay per token — model-dependentFree (limited) + $10/mo Pro + $19/mo BusinessPart of Claude Pro/Max/Team plans
Best forDevelopers who need sub-100ms LLM responses.Developers experimenting across models. Apps that want fallback logic.Teams with GitHub already. Devs who don't want to change IDEs.Developers who want an agent, not autocomplete. Large refactors, tests, docs.
Strengths
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
Weaknesses
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Slight markup over direct API
  • Some provider features not exposed
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
Kai's verdictS-tier for speed. When latency is the product, start here.S-tier for model-shopping. I use this for every prototype before committing.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.
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