Free AI chat tools compared: Copilot vs ChatGPT vs Gemini

What are Copilot Chat, ChatGPT and Gemini?

Copilot Chat 

Microsoft Copilot Chat is Microsoft’s AI-powered chat experience, available for free via the web, Edge, and Windows. It’s built on advanced large language models and is designed to support everyday productivity tasks like drafting, summarising, and research.

Paid versions of Copilot (such as Microsoft 365 Copilot) go further, embedding AI directly into tools like Word, Excel, Outlook, and Teams.

ChatGPT 

ChatGPT is OpenAI’s conversational AI tool, available in a free version and a paid subscription (ChatGPT Plus). It’s widely used for creative writing, learning, coding support, and general-purpose AI conversations.

Google Gemini 

Gemini is Google’s AI assistant, integrated with Google Search and Workspace tools. Like the others, it has a free version and a paid “Advanced” tier offering enhanced features.

How do the free versions compare?

At a basic level, the free versions of Copilot Chat, ChatGPT, and Gemini offer similar functionality. All can respond to questions, generate written content, summarise information, and support brainstorming.

Where they begin to differ is in context and integration. Copilot Chat benefits from being embedded within the Microsoft ecosystem, making it particularly convenient for users already working in Edge or Windows. ChatGPT’s free tier is strong for open-ended conversation and creative experimentation, while Gemini excels at surfacing and summarising information connected to live web data.

For individuals and light usage, any of these tools can be genuinely useful. The real distinction becomes clearer when AI starts to be used for everyday work tasks involving organisational data.

Why AI data security matters

As AI tools become more common in the workplace, data security quickly becomes a central concern. It’s easy for users to paste text into an AI chat without considering whether that information is confidential, commercially sensitive, or subject to compliance requirements.

This is where Microsoft positions Copilot differently. When Copilot for Microsoft 365 is used within Microsoft’s ecosystem, particularly through paid Copilot services, prompts and responses are protected by enterprise-grade security. Data remains within the organisation’s Microsoft tenant and is governed by existing identity, access, and compliance controls. Importantly, this information is not used to train public AI models.

When you add company data to public AI tools like ChatGPT or Gemini, it’s processed outside your organisation, which could expose sensitive information. In contrast, Copilot Chat and Copilot keep your data locked down within your company environment, protected by existing security measures. Copilot also provides a clear choice between ‘Web’ and ‘Work’ tabs, so you always know where your data is going and where your responses are coming from.

Free Copilot Chat vs paid Microsoft Copilot

Copilot Chat provides a powerful introduction to AI-assisted productivity, but paid Microsoft Copilot is designed to support organisations at scale.

One of the biggest differences is integration. Copilot for Microsoft 365 works directly inside Microsoft 365 applications, helping users draft documents in Word, analyse data in Excel, manage emails in Outlook and summarise meetings in Teams. Rather than switching between tools, AI support appears naturally within existing workflows.

There are also clear benefits from a governance perspective. Paid Copilot aligns with organisational security policies, offering:

• Administrative control, meaning no information introduced to Copilot will leave the pre-determined security boundaries your organisation has set
• Support with compliance requirements
• Built-in security features and offerings

For many businesses, this turns AI from an interesting experiment into a dependable tool.

The comparison: Copilot vs ChatGPT and Gemini?

Paid versions of ChatGPT and Gemini offer clear advantages over the free versions, including:

• Improved performance and faster responses
• Access to more advanced AI models
• Additional features designed for power users and specialist tasks
• Strong capabilities for creativity, research, and experimentation

Microsoft Copilot is designed with a different focus. Its strength lies in context and trust, particularly for organisations. Copilot works securely with:

• Existing business documents and files
• Meetings, emails, and conversations across Microsoft 365
• Organisational identity, security, and compliance controls

This means Copilot delivers AI support that is directly relevant to day-to-day work, without requiring business data to leave the organisation’s secure environment.

Choosing the right AI tool for your organisation

Free AI chat tools are a great way to explore what’s possible and build confidence with AI. For casual use or early experimentation, Copilot Chat, ChatGPT, and Gemini all have a role to play.

When AI becomes part of business operations, however, the focus often shifts towards security, compliance, and productivity. In those cases, Microsoft 365 Copilot offers a balance between AI capabilities and business-ready controls.