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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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Elicit
S
Groq
S
Devin
A
ChatGPT Operator
B
TaglineAI research assistant for academic literature.The fastest AI inference in the world. Crazy low latency.Cognition Labs' autonomous coding engineer.OpenAI's browser agent. Clicks and types on websites for you.
CategoryResearchDev PlatformAgentsAgents
PricingFree + $12-$42/moFree tier + pay-as-you-go API$500/moIncluded with ChatGPT Pro $200/mo
Best forGrad students, researchers, anyone doing literature reviews.Developers who need sub-100ms LLM responses.Engineering teams offloading tickets. Ops/platform work.Power users willing to pay $200/mo for a browser bot.
Strengths
  • Searches 125M+ papers
  • Extracts + synthesizes findings across papers
  • Systematic review workflow
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
Weaknesses
  • Academic-only
  • Can hallucinate citations — verify everything
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
Kai's verdictS-tier for academic research. Nothing else comes close for systematic reviews.S-tier for speed. When latency is the product, start here.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.B-tier. Still early. Manus is more flexible for less money.
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