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Best General AI Assistants for Firms

For: Any professional firm

Business-tier assistants that keep client data out of model training by default. Top 4, scored out of 100 on our six-part rubric (security & compliance = 20%). Reviewed 2026-10-16.

These scores come from desk research (vendor pages, industry surveys and published reviews), not hands-on testing yet. Scores within 1 point are treated as ties. Security and compliance claims are the vendors' own. Verify them with each vendor's documentation (for example a SOC 2 report) before you put client data in.

  1. #1

    ChatGPT Business

    Strong general capability; business data excluded from training by default.

    Price: ~$25-30/user/month (reported)Partially verified
    82/100
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  2. #2

    Microsoft 365 Copilot

    Works inside your Microsoft tenant with Purview controls, the default for M365 firms.

    Price: ~$30/user/month (reported)TiedPartially verified
    81.5/100
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  3. #3

    Gemini for Google Workspace

    Native in Gmail/Docs/Drive for Google Workspace firms.

    Price: Included in many Workspace plans (verify current plan)Partially verified
    80.5/100
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  4. #4

    Claude Team / Enterprise

    Strong long-document analysis; business data excluded from training by default.

    Price: ~$25-30/user/month (reported)Partially verified
    79.5/100
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