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Plain guides to choosing an AI: one plan or several, which of the four AIs fits each kind of work, and when to have four AIs check one answer.

• AIOAIA vs paying for ChatGPT, Claude, Gemini and Grok separatelyOne plan with shared memory, or four separate apps. What you gain and what you give up.
• One subscription for GPT, Claude, Gemini and GrokHow one AIOAIA plan works, what Auto and Council do, and what each plan includes.
• The best AI for lawyers and legal workDrafting, contract review, long documents and research, and which AI handles each.
• The best AI for finance and accountingAnalysis, figures, statements and memos, and which AI handles each.
• The best AI for consultants and strategyAnalysis, research, deliverables and client context, and which AI handles each.
• The best AI for coding and software teamsWriting code, debugging and building pages, and how Code mode works.
• The best AI for marketing and writingCopy, long pieces, images and trends, and which AI handles each.
• Council: get four AIs to check one answerOne AI drafts, three check, one final answer. What it is and when to use it.

AIOAIA is independent and not affiliated with, endorsed or sponsored by OpenAI, Anthropic, Google or xAI. Logos and names identify each AI and belong to their owners.