The Essential Guide to ChatGPT, Copilot, and Gemini

Publié par Marc sur 13 Avril 2026, 09:47am

Catégories : #ChatGPT, #Copilot, #Deepseek, #Gemini, #Claude, #Grok

Which AI tool fits your needs in 2025? Full comparison of ChatGPT, Copilot, Gemini, Claude, Mistral, Deepseek, Grok, Meta AI — strengths, limits, and real use cases.

The Essential Guide to ChatGPT, Copilot, and Gemini 2025 | SafeITExperts

📚 Series 3/5 ⏱ ~9 min Comparison

The Essential Guide to ChatGPT, Copilot, and Gemini

The survival guide to never drown in names again. Which tool should you choose, for what, and for whom? We also cover image, video, audio, code, and emerging alternatives.

Article · ~9 min read

The major players in 2026

🗺️

Who does what? The lay of the land

🟢

ChatGPT

OpenAI

Free + Pro

🔵

Copilot

Microsoft

Free + M365

🟡

Gemini

Google

Free + Pro

🟣

Claude

Anthropic

Free + Pro

🇫🇷

Mistral

Mistral AI

Free + API

🔍

Perplexity

Perplexity AI

Free + Pro

🇨🇳

Deepseek

深度求索

Free + API

🇨🇳

Qwen

Alibaba

Free + API

𝕏

Grok

xAI

X Premium

📄

Kimi

Moonshot AI

Free

🦙

Meta AI

Meta (Llama)

Open source

🧪

GLM

Zhipu AI

Free + API

🔬

Concrete differences

ChatGPT

OpenAI

The best known. Versatile: writing, code, analysis, image. GPT-4o free with daily usage limits.

Copilot

Microsoft

Free version accessible to all. Copilot M365 (~€30/month, dedicated licence) integrated into Word, Excel, Teams.

Gemini

Google

Gemini 2.5 Pro. Integrated with Gmail, Drive, Docs. Excellent for research and summarisation.

Claude

Anthropic

Cautious and reliable. Excellent for long documents and nuanced analysis.

Mistral

Mistral AI 🇫🇷

European sovereign option, open-source, GDPR-compliant, can be hosted in France.

Perplexity

Perplexity AI

Search specialist with verifiable citations. Perfect for quick research.

🔒

Deepseek

深度求索

High-performance Chinese model, R1 version for reasoning. Caution: data hosted in China.

Qwen

Alibaba 🇨🇳

Versatile, good at code, multilingual. Open-source versions can be run locally.

𝕏

Grok

xAI

Elon Musk's AI on X Premium. Edgy tone, real-time access to X.

Kimi

Moonshot AI 🇨🇳

Excellent for long documents. Open-source architecture, up to 256K token context.

Meta AI

Meta (Llama)

Open-source family, multiple sizes, can be run locally on your own machine.

GLM

Zhipu AI 🇨🇳

Open-source model strong in reasoning. Runs locally with at least 6GB VRAM.

🎨

Beyond text: image, video, audio, code

General assistants (ChatGPT, Gemini, etc.) often integrate multiple modalities. But for specific needs, dedicated tools exist:

Image – DALL·E (in ChatGPT), Midjourney, Stable Diffusion, Firefly (Adobe).
Video – Sora 2 (OpenAI, available since late 2025), Runway, Pika, Kling (Chinese).
Audio / music – Suno, Udio, ElevenLabs (voice), MusicFX (Google).
Code – GitHub Copilot, Cursor, Windsurf (IDE), Codeium.

Recent models (GPT-4o, Gemini 2.5 Pro) can "see" and comment on images, listen to audio, and generate code. If you need an all-in-one tool, start with ChatGPT or Gemini.

💡

Tip: For a creative project, combine multiple tools: ChatGPT for the script, Midjourney for visuals, Suno for music, and Runway for video.

🎯

Which tool fits you? The decision tree

🏢

Microsoft Copilot

If you use Microsoft 365 daily

Word, Excel, Teams, Outlook — Copilot is already integrated into your everyday tools.

Office

📧

Gemini

If you're on Gmail / Google Drive

Native integration across the whole Google suite: Docs, Sheets, Meet, Gmail.

Google

🆓

ChatGPT or Deepseek *

Most versatile free solution

Both free versions cover 80% of everyday use cases without any cost.

Free

📄

Claude or Kimi

Long and complex documents

Analysis, summarisation, reasoning on large volumes — up to 256K token context.

Documents

🔒

Mistral or Meta AI

Sensitive data / GDPR compliance

Mistral can be hosted in France. Meta AI (Llama) runs locally — your data stays with you.

GDPR

🔍

Perplexity

Search with cited sources

Every answer is sourced and verifiable. Ideal for research and quick fact-checking.

Research

🎨

Dedicated tools

Images, video, or music

DALL·E, Midjourney, Sora 2, Runway, Suno… See the dedicated section above.

Creative

🖥️

Mistral, GLM, or Llama

AI on your own machine

Via Ollama: 100% offline, no data sent. GLM runs with at least 6GB VRAM.

Local

* Deepseek: data hosted on servers in China — avoid confidential professional documents.

💶

Free or paid: is it worth it?

The free versions of ChatGPT, Claude, Gemini, Deepseek, etc., are already very powerful for personal use. For intensive professional or team use, paid versions bring:

Newer, more powerful models
Much higher usage limits
Advanced features (image generation, file analysis, memory…)
Priority access during peak hours

ChatGPT Plus

~$20/month

Unlimited GPT-4o + images

Claude Pro

~$20/month

Opus 4.6, long files

Copilot M365

~$30/month

Dedicated licence, pro use

Gemini Advanced

~$22/month

2.5 Pro + Workspace

Perplexity Pro

~$20/month

Unlimited research

Mistral / GLM / Meta

Free

Open source, local possible

💡

Advice: start with the free version of ChatGPT, Claude, or Deepseek. If you use it daily and feel the limitations, upgrade to Pro.

🔒

Be careful what you share

When you use ChatGPT, Gemini, or Copilot, what you type is sent to those companies' servers for processing. For personal use or ordinary documents, this is usually not a problem. In a business context, it's different.

⚠️ Avoid online

Client contracts, payslips, medical data, HR information, passwords.

✅ Local alternatives

Mistral (can be hosted in France), Meta AI Llama (local), GLM (min. 6GB VRAM), Qwen open source.

⚠️

Best practice: when in doubt, never submit a confidential document to a cloud AI without checking with your IT manager.

Key takeaway

There is no single best tool. There is the tool that matches your context and specific needs. If you're on Microsoft 365, start with Copilot. Otherwise, free ChatGPT or Deepseek are enough for 80% of use cases. And don't forget the specialists for image, video, or code.