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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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Windsurf
A
DALL-E 3
B
Claude Agent SDK
S
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.OpenAI's image model. Built into ChatGPT Plus.Anthropic's SDK for building your own agents on Claude.
Categorycodingimageagents
PricingFree + $15/mo ProIncluded with ChatGPT Plus $20/moAPI usage + SDK is free
Best forDevelopers who want Cursor-like power for less money.ChatGPT Plus users who want images without paying extra.Developers building custom agents for their own company/product.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
Weaknesses
  • Smaller community
  • Model selection more limited
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Developer-only
  • You build the UI
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.S-tier for builders. The right primitives. What Kai is built on under the hood.
LinkOpen →Open →Open →