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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
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Gamma
A
Claude Code
S
Aider
A
OpenAI Voice / Realtime
S
TaglineAI slide decks that don't look AI-generated.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Terminal-based AI pair programmer. Git-aware, model-flexible.ChatGPT's voice + the Realtime API for developers.
CategoryProductivityCodingCodingVoice
PricingFree + $10-$20/moPart of Claude Pro/Max/Team plansFree (open source) + whatever API you useVoice included with ChatGPT Plus; Realtime API by usage
Best forPitch decks, proposals, internal presentations — fast.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Developers who want open-source tooling with full control.Voice chat users, developers building voice agents on OpenAI.
Strengths
  • Strong templates
  • Decks, docs, webpages
  • Doesn't look generic
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
Weaknesses
  • Locked into Gamma's format
  • Export quality varies
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
Kai's verdictA-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.
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