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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
Flux (Black Forest Labs)
A
Devin
A
Descript
S
TaglineRun any open-source AI model with an API call.Open weights + strong photorealism. The open-source answer.Cognition Labs' autonomous coding engineer.Edit video + podcasts by editing the transcript.
CategoryDev PlatformImageAgentsVideo
PricingPay per second of computeAPI + open weights (Schnell is Apache 2.0)$500/moFree + $16-$50/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Developers + power users who want control and privacy.Engineering teams offloading tickets. Ops/platform work.Podcasters, course creators, anyone editing talking-head content.
Strengths
  • 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
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Edit audio/video by deleting text
  • Overdub (voice clone) for fixes
  • Strong collaboration + remote recording
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Harder to use than hosted tools
  • Needs infra
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Not a traditional NLE — some workflows awkward
  • Overdub ethics require care
Kai's verdictS-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.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.S-tier for content creators. Cuts editing time in half. Non-obvious but life-changing.
LinkOpen →Open →Open →Open →