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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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Devin
A
Stable Audio
A
Claude Code
S
Genspark
A
TaglineCognition Labs' autonomous coding engineer.Stability AI's open audio model. Loops + SFX + background.Anthropic's CLI agent. Opus-powered, operates on your repo directly.AI agent for deep search. Generates Sparkpages — full mini-reports.
CategoryAgentsAudioCodingResearch
Pricing$500/moFree + $12/mo Pro + enterprisePart of Claude Pro/Max/Team plansFree + $25/mo Plus
Best forEngineering teams offloading tickets. Ops/platform work.Game developers, podcasters needing SFX, video creators needing background music.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Travel planning, shopping comparisons, deep research where you want an artifact back.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Not for full songs with vocals
  • Shorter generation limits
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier for its niche. Different use case than Suno — SFX and loops, not songs.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.A-tier. Bet on this one — the Sparkpage format is genuinely new.
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