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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
Replicate
S
Flux (Black Forest Labs)
A
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.Run any open-source AI model with an API call.Open weights + strong photorealism. The open-source answer.
CategoryCodingDev PlatformImage
PricingFree + $15/mo ProPay per second of computeAPI + open weights (Schnell is Apache 2.0)
Best forDevelopers who want Cursor-like power for less money.Developers using open-source models (Flux, SDXL, Whisper, etc).Developers + power users who want control and privacy.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
Weaknesses
  • Smaller community
  • Model selection more limited
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Harder to use than hosted tools
  • Needs infra
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.S-tier for open-source model APIs. The default in this space.A-tier. S-tier if you self-host. The reason open-source image gen matters.
LinkOpen →Open →Open →