ChatGPT, Claude or Copilot? is a two-page Forum3 guide for teams choosing an AI platform. It argues that the useful question is which platform fits the work, systems and habits your team has right now, and gives a quick read on each: ChatGPT as a strong general-purpose choice, Claude for long-form, document-heavy work and file-based tasks in Cowork, and Microsoft Copilot for organizations that already live in Microsoft 365.

The guide offers five questions to ask before comparing features, a 20-minute test that scores one real weekly task on usefulness, accuracy, editing effort, workflow fit and trust, and guidance on whether to use one platform or two.

Readers leave with a way to pick a sensible default without treating it as a permanent decision.