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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
Udio
A
ChatGPT Operator
B
Groq
S
TaglineCognition Labs' autonomous coding engineer.Suno's main rival. Often better on instrumental nuance.OpenAI's browser agent. Clicks and types on websites for you.The fastest AI inference in the world. Crazy low latency.
CategoryAgentsAudioAgentsDev Platform
Pricing$500/moFree + $10-$30/moIncluded with ChatGPT Pro $200/moFree tier + pay-as-you-go API
Best forEngineering teams offloading tickets. Ops/platform work.Musicians comparing AI outputs. Anyone who didn't click with Suno.Power users willing to pay $200/mo for a browser bot.Developers who need sub-100ms LLM responses.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Strong instrumentals + genre fidelity
  • Extend/remix features
  • Good lyric understanding
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Same copyright gray zone as Suno
  • Ecosystem smaller
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier. Genuinely different vibe from Suno — worth trying both for a month.B-tier. Still early. Manus is more flexible for less money.S-tier for speed. When latency is the product, start here.
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