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Understanding ChatGPT – What It Is and How It Works

Lesson 3: ChatGPT Model Tiers and the Microsoft Relationship

Lesson Objectives

By the end of this lesson, students should be able to:

  • Describe the practical differences between ChatGPT model tiers
  • Make an informed decision about whether a paid subscription fits their needs
  • Understand the relationship between OpenAI and Microsoft and why it matters
  • Locate current model and pricing information at openai.com

Lesson Content

ChatGPT model tiers – what they mean for users.

All model names, feature availability, and pricing are subject to change. Verify current information at openai.com/chatgpt/pricing. This lesson describes the general model tier structure as of the course creation date.

ChatGPT is available in multiple tiers:

Free plan: The free version of ChatGPT is available to everyone, with model and feature access that may change over time. It is usually enough for beginning to learn core workflows, though limits and features vary. The free tier is an excellent starting point – do not assume a paid subscription is necessary before experiencing whether the free tier meets your needs.

ChatGPT Plus: A paid monthly subscription that provides priority access during peak demand, access to the latest and most capable models without the usage limits of the free tier, and access to additional features including: ChatGPT image generation, data analysis / file analysis tools, web web search / browsing, and Custom GPTs. For users who use ChatGPT frequently or rely on these advanced features, Plus provides meaningful value.

ChatGPT Business / organizational plans: OpenAI offers workspace plans for teams and organizations. These generally include collaboration/admin features and business data controls. Exact names, limits, and privacy terms should be verified in current OpenAI documentation.

ChatGPT Enterprise / Edu: OpenAI offers enterprise and education workspaces with expanded administration, security, privacy, and compliance-oriented controls. Students should verify the current plan terms directly with OpenAI.

The OpenAI and Microsoft relationship.

OpenAI has received significant investment from Microsoft Corporation. This relationship has resulted in: Microsoft Copilot being powered by OpenAI's GPT technology, ChatGPT capabilities being integrated into Microsoft's products, and Azure cloud infrastructure supporting OpenAI's operations.

This means: if you use both ChatGPT and Microsoft Copilot, you may be using the same or similar underlying AI technology – but through different products, interfaces, and data governance arrangements.

For users choosing between ChatGPT and Microsoft Copilot, the choice often comes down to: whether you are in the Microsoft 365 ecosystem (favors Copilot for workplace integration), whether you need ChatGPT-specific features (Custom GPTs, image generation, data analysis / file analysis tools), or whether you have existing subscriptions with one provider.

Choosing your tier – a practical framework.

Start with the free tier. If you find yourself: running into usage limits frequently, needing ChatGPT image generation, needing to upload and analyze data files, wanting to use Custom GPTs, or relying on ChatGPT enough that priority access during peak times matters – evaluate whether ChatGPT Plus is worth the subscription cost for your specific use case. Always verify current pricing at openai.com/chatgpt/pricing before subscribing.

Jamie Practice Lab

Before moving to the quiz, complete this short applied exercise:

  1. Write one realistic ChatGPT prompt that applies the main idea from ChatGPT Model Tiers and the Microsoft Relationship to your own work, learning, or daily life.
  2. Add one safety or verification step you would take before acting on ChatGPT's response.
  3. Revise the prompt once to include clearer context, constraints, or success criteria.

Instructor check: A strong answer should show practical use, human review, and awareness that ChatGPT output is assistance – not automatic truth or professional advice.

Added Quiz Enhancement

question_id: auto-enhancement-chatgpt-model-tiers-and-the-microsoft-relationship-qjamie001 question_type: short_answer difficulty: applied question: Write one prompt you could use after this lesson, then name one verification or human-review step you would apply before relying on the result. correct_answer: Answers will vary; a strong answer includes a clear task, relevant context, at least one constraint or desired format, and a realistic verification or human-review step based on the stakes of the task. answer_explanation: This applied question checks whether the student can transfer the lesson into real use while maintaining responsible AI habits.

Lesson Quiz

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