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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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Dev Platform
Agents
Voice
Video
Audio
Research
Coding
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Image
Meetings
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Productivity
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Data
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Replicate
S
DALL-E 3
B
Fireflies
A
Genspark
A
TaglineRun any open-source AI model with an API call.OpenAI's image model. Built into ChatGPT Plus.Sales-focused meeting AI with CRM integration.AI agent for deep search. Generates Sparkpages — full mini-reports.
CategoryDev PlatformImageMeetingsResearch
PricingPay per second of computeIncluded with ChatGPT Plus $20/moFree + $10-$19/user/moFree + $25/mo Plus
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).ChatGPT Plus users who want images without paying extra.Sales teams, customer success, anyone running many discovery calls.Travel planning, shopping comparisons, deep research where you want an artifact back.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • Good CRM integrations (Salesforce, HubSpot)
  • Talk-time + sentiment analytics
  • Call scoring
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Bot-joins (intrusive)
  • Gets expensive at team scale
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
Kai's verdictS-tier for open-source model APIs. The default in this space.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.A-tier for sales teams. B-tier for solo users.A-tier. Bet on this one — the Sparkpage format is genuinely new.
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