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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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DeepSeek
S
Groq
S
NotebookLM
S
ChatGPT Operator
B
TaglineChinese open-weight powerhouse. Crazy cheap, genuinely smart.The fastest AI inference in the world. Crazy low latency.Google's research notebook. Turns your docs into a podcast.OpenAI's browser agent. Clicks and types on websites for you.
CategoryChatbotsDev PlatformResearchAgents
PricingFree web + ultra-cheap API (~$0.14/M input tokens)Free tier + pay-as-you-go APIFreeIncluded with ChatGPT Pro $200/mo
Best forDevelopers + cost-conscious builders. Anyone fine with self-hosting.Developers who need sub-100ms LLM responses.Students, researchers, anyone with a stack of PDFs or a topic to learn.Power users willing to pay $200/mo for a browser bot.
Strengths
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Upload anything, ask questions, get cited answers
  • Audio Overview turns docs into a 10-min podcast
  • Great for studying
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
Weaknesses
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Google-only
  • Can be slow on large corpora
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
Kai's verdictS-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.S-tier for speed. When latency is the product, start here.S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.B-tier. Still early. Manus is more flexible for less money.
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