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Windsurf
A
Cursor
S
Groq
S
Claude Agent SDK
S
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.VS Code fork that made AI coding actually work.The fastest AI inference in the world. Crazy low latency.Anthropic's SDK for building your own agents on Claude.
Categorycodingcodingdev platformagents
PricingFree + $15/mo ProFree + $20/mo Pro + $40/mo BusinessFree tier + pay-as-you-go APIAPI usage + SDK is free
Best forDevelopers who want Cursor-like power for less money.Developers. Non-developers who want to ship working code.Developers who need sub-100ms LLM responses.Developers building custom agents for their own company/product.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
Weaknesses
  • Smaller community
  • Model selection more limited
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Developer-only
  • You build the UI
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for speed. When latency is the product, start here.S-tier for builders. The right primitives. What Kai is built on under the hood.
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