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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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OpenAI Voice / Realtime
S
Claude Code
S
Fireflies
A
Gamma
A
TaglineChatGPT's voice + the Realtime API for developers.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Sales-focused meeting AI with CRM integration.AI slide decks that don't look AI-generated.
CategoryVoiceCodingMeetingsProductivity
PricingVoice included with ChatGPT Plus; Realtime API by usagePart of Claude Pro/Max/Team plansFree + $10-$19/user/moFree + $10-$20/mo
Best forVoice chat users, developers building voice agents on OpenAI.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Sales teams, customer success, anyone running many discovery calls.Pitch decks, proposals, internal presentations — fast.
Strengths
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Good CRM integrations (Salesforce, HubSpot)
  • Talk-time + sentiment analytics
  • Call scoring
  • Strong templates
  • Decks, docs, webpages
  • Doesn't look generic
Weaknesses
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Bot-joins (intrusive)
  • Gets expensive at team scale
  • Locked into Gamma's format
  • Export quality varies
Kai's verdictS-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.A-tier for sales teams. B-tier for solo users.A-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes.
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