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Gemini vs ChatGPT: which generative AI should you choose to boost your productivity in 2025?

By Anastasia De Santis

Published: 12 August 2025

In 2025, choosing between ChatGPT (from OpenAI) and Gemini (by Google) is a bit like choosing your digital co-pilot. Two titans of generative AI, boosted by machine learning, who promise to answer (almost) all your questions, write your emails, brainstorm your ideas, automate your tasks and even code for you.

But their approaches, strengths and limitations differ. And depending on your business, your tools, your technical level or your budget, one will clearly be more suitable than the other.

So, ChatGPT or Gemini? To find out which one deserves to become part of your tool stack, we've put the two intelligences under the microscope: features, interface, integrations, price... right down to the tone of their answers.

Spoiler: you might be surprised.

What is Gemini?

Gemini overview

Gemini is the multimodal generative AI by Google DeepMind, launched at the end of 2023 and announced as the direct rival of ChatGPT. Since March 2025, the Gemini 2.5 version (Pro, Flash, Flash-Lite) has been available, with the Pro version designed for deep reasoning, advanced coding and a gigantic contextual window of one million tokens.
It is targeted at businesses, developers, content creators and marketers looking for an AI capable of processing text, code, images, audio or video simultaneously.

Perfect for teams working with Google Workspace or the Vertex AI platform. Many of its users praise its speed, multi-modal versatility and ability to produce several drafts for each request.

In short, Gemini is a powerful multimodal assistant, designed to go beyond text with complex reasoning, but it's not perfect and can sometimes generate inaccurate answers - aka 'hallucinations'.

Gemini is a muscular co-pilot, ideal when you need an AI that cogitates in all dimensions, but beware of the reliability of its output in certain contexts.

Gemini's key features

Gemini impresses with its native multimodal approach and its advanced reasoning, summarising and coding capabilities. Here are the key features of this AI made in Google:

  • Multimodal comprehension: Gemini simultaneously processes text, images, audio and video. You can ask it a question based on a diagram or a graph, and it will answer with precise context.
  • Advanced code generation: it manages several languages, offers suggestions in real time and has a better understanding of complex dependencies in a project. A real ally for developers (particularly on Colab or Android Studio).
  • Google Workspace integration: Gemini is directly integrated into Gmail, Docs, Sheets or Meet, acting as a co-pilot to automate, correct or reformulate content.
  • Long content summaries: whether PDF reports, research articles or YouTube videos, Gemini can summarise and explain key points very quickly.
  • High context capacity: with its 1 million tokens, Gemini Pro can handle long conversations or large documents without losing the thread.
  • Dynamic search and sourcing: coupled with the power of Google Search, it often provides sourced answers in real time, which enhances credibility (when it doesn't get mixed up).
  • Intelligent multi-buying: Gemini often offers several versions of a response, to give the user a choice depending on the desired tone or style.

Advantages and disadvantages of Gemini

Gemini may impress with its AI superpowers, but it also has a few flaws. Here's what we think, based on user feedback on G2, Capterra and specialist press reviews:

✅ Advantages

  • Native multimodal versatility: this is one of the few models capable of reasoning with text, image, audio and video, without friction.
  • Integrated with Google Workspace: Gmail, Docs, Slides... everything is ready to use to automate tasks without changing tools.
  • High context capacity: up to 1 million tokens for long conversations or analysis of large documents.
  • Good UX: clear, fast interface, with suggestions for rephrasing or tone directly integrated.
  • Answers often sourced: native access to Google Search makes it easy to find sources (when done right).

❌ Drawbacks

  • Less good for complex code than GPT-4, according to several developers, especially on back-end or multi-language projects.
  • Hallucinations still common, especially on technical or highly specialised content.
  • Available in Workspace... but not elsewhere: the experience is optimal at Google, less so elsewhere.
  • Fewer third-party integrations than ChatGPT, which has a much more mature ecosystem of plugins, APIs and connectors.

What is ChatGPT?

Overview of ChatGPT

Developed by OpenAI, ChatGPT is the language model that democratised generative AI by the end of 2022.

ChatGPT, developed by OpenAI, reached a new milestone in 2025 with the launch of GPT-5, now the default model for all users. This version consolidates the functions of models GPT-4o, o3, GPT-4.1, etc., into a unified, ultra-intelligent system. An 'intelligent router' automatically adapts the level of reasoning according to the complexity of the request, without any manual action on the part of the user.

The improvements are significant:

  • Faster, more accurate and less prone to hallucinations, with around 45% fewer errors than GPT-4o.
  • Enhanced multimodal capability: smooth processing of text, images, audio and video, with even more natural voice interaction.
  • Enhanced memory and personalisation: conversational personalities (Cynic, Listener, Nerd, Robot), visual themes, native integration with Gmail and Google Calendar.
  • Universal availability: GPT-5 is available to free users (with quotas), and Plus, Pro and Team versions offer enhanced capabilities.

With over 100 million active users per week, it's one of the most widely adopted tools in the SaaS world. And it's not just a question of buzz: the ratings on G2 or Capterra flirt with 4.7/5, praising its accuracy, responsiveness and customisation.

Key features of ChatGPT

ChatGPT-5 isn't just "smarter": it's changing the way we interact with AI. Here are the key features identified in 2025:

  • Adaptive reasoning: thanks to the intelligent router, GPT-5 automatically adjusts its level of thinking according to the complexity of the request. No more juggling between models.
  • Advanced multimodality: understanding and generating text, images, audio and video, with almost instantaneous fluidity.
  • Conversational personalities: choose between Cynic, Listener, Nerd or Robot to adapt the tone to your needs.
  • Memory and personalisation: retention of context, writing style, preferences and working documents.
  • Native integrations: Gmail, Google Calendar, but also open APIs for CRM, project management, etc.
  • Natural voice interaction: fluid conversation in real time, even on mobile devices.
  • Extended accessibility: available in a free version (limited) and in Plus, Pro and Team packages.

GPT-5 is designed to reduce friction and increase productivity, whatever the medium or area of activity.

Advantages and disadvantages of ChatGPT

ChatGPT is a bit like a chameleon AI: adaptable, fast, often brilliant, sometimes surprising... Opinions are unanimous: GPT-5 has reached a milestone. But like any tool, it has its strengths... and its grey areas.

✅ Advantages :

  • Increased accuracy: 45% reduction in errors compared to GPT-4o, improving reliability for writing, data analysis and code.
  • Complete multimodality: switch from a text document to image or video analysis without changing tools, saving enormous amounts of time for marketing, design and R&D teams.
  • Advanced personalisation: choice of personalities (Cynic, Listener, Nerd, Robot), visual themes and memorisation of preferences, ideal for aligning the tone with the brand or audience.
  • Powerful native integrations: direct connection to Gmail, Google Calendar and other business tools, so you don't have to keep copying and pasting.
  • Accessibility: free version available with generous quotas, enabling small organisations to test before investing.
  • Fluid experience: interface optimised for mobile and desktop, with reduced latency in most cases.

❌ Disadvantages:

  • Advanced features locked down: full access to memory capacities and multimodality sometimes reserved for Pro or Team subscriptions.
  • Internet dependency: unusable in offline mode, which limits certain professional situations (e.g. travel with a weak connection).
  • Slowdowns on older devices: voice and video interactions can be jerky on low-performance hardware.
  • Learning curve: taking advantage of all the functions (customisation, APIs, integrations) takes some getting used to.

⚠️ Points to watch out for:

  • Confidentiality: need to check data management policies, especially for companies subject to strict regulations (RGPD, HIPAA, etc.).
  • Frequent updates: although positive, they can disrupt workflows if the team is not prepared.
  • Black box' effect: like any AI, GPT-5 can give a correct answer without explaining its reasoning, which can pose a problem in audit or legal contexts.

Gemini vs ChatGPT: compare features

The two AIs do more than just answer your questions. They write, analyse, generate, translate, reason... and sometimes surprise you.

To help you decide, we've analysed their key features, updated to 2025.

Criteria Gemini 1.5 ChatGPT-5
Multimodality (text, image, audio, video) ✅ Yes (fluid, enriched context) ✅ Yes (with real-time interactions)
Conversational memory ⚠️ Limited (keeps context short) ✅ Advanced (preferences, long history)
Tone personalisation ❌ No ✅ Yes (personalities + settings)
Native integrations ✅ Google Workspace, Search ✅ Large ecosystem + open APIs
Complex reasoning ✅ Excellent precision (long context 1M tokens) ✅ Adaptive reasoning via intelligent router
Plugins / Store ❌ No ✅ Yes (store + third-party APIs)
Natural speech interaction ⚠️ Basic (latency) ✅ Smooth and fast
Free access ✅ Yes ✅ Yes
Premium plans Cheaper More expensive (depending on version)

Focus on multimodality and content processing

  • Gemini 1.5: understands and produces text, images, audio and video. Key advantage: ability to analyse entire documents (PDF, code, spreadsheets) while retaining massive context (up to 1 million tokens).
  • ChatGPT-5: integrated multimodality with real-time interaction. Can describe an image, edit it, then follow it up with a video script, all in the same conversation.

👉 To remember

Gemini excels at long reading and analysis, while ChatGPT shines at dynamic creation and interaction.

Focus on memory and personalisation

  • Gemini: retains the context of a few exchanges, but does not retain your preferences from one session to the next (not yet).
  • ChatGPT-5: long-term memory, storage of your preferences, writing style, and even reference documents to save time on recurring projects.

👉 To remember

For an assistant getting to know you, ChatGPT-5 is a clear winner.

Focus on integration and automation

  • Gemini: integrated with Google Workspace (Gmail, Docs, Sheets), Google Search and soon YouTube Studio. Perfect if you live in the Google ecosystem.
  • ChatGPT-5: open API, plug-in store, integrations with Notion, Slack, Trello, HubSpot, Zapier... and more.

👉 To remember

Gemini is unbeatable for Google, ChatGPT for multi-tool automation.

Focus on reasoning and precision

  • Gemini: very high precision in processing long contexts (e.g. analysis of an entire book).
  • ChatGPT-5: adaptive reasoning, which chooses the best method depending on the task (creativity, calculation, synthesis).

👉 To remember

For complex data in a huge context, Gemini; for a mix of logic and creativity, ChatGPT-5.

Focus on accessibility and costs

  • Both offer a free version, but with limitations.
  • Gemini Premium: ~$19.99/month.
  • ChatGPT Plus (GPT-5): $20/month, Pro and Team more expensive.

👉 To remember

if budget is critical, Gemini is slightly more affordable.

Gemini vs ChatGPT: compare prices

In 2025, the two AIs have revised their prices to suit business and consumer use. The good news is that there are still free versions available for testing. The bad news: the real premium features are hidden behind a subscription.

Offer Gemini 1.5 (Google) ChatGPT-5 (OpenAI)
Free Access to Gemini 1.5 Flash (fast, limited multimodality) + Google Search integration Access to GPT-4o (text, limited multimodality)
Standard / Plus Gemini Advanced: $19.99/month - access to Gemini 1.5 Pro + advanced Workspace integration ChatGPT Plus: $20/month - access to GPT-5 with multimodality and increased speed
Pro Not communicated (business features via Google Cloud) ChatGPT Pro: $40/month - longer context, faster APIs
Team / Enterprise Price on quotation via Google Cloud AI ChatGPT Team/Enterprise - price on quotation depending on number of users and APIs

To remember

  • Gemini is slightly cheaper in its standard package and may appeal to those who want native Google.
  • ChatGPT-5 offers more advanced options for teams, but prices rise quickly.
  • In both cases, the free version remains limited for regular professional use.

Gemini vs ChatGPT: which interface is more intuitive?

When it comes to generative AI in everyday use, the interface makes all the difference. Responsiveness, clarity, customisation... which makes for a smoother experience, ChatGPT or Gemini? We compared the two tools on four key criteria: ease of use, ergonomics, customisation and navigation.

UX/UI comparison table

Criteria ChatGPT (GPT-5) Gemini (Pro 2.5)
Handling ✅ Immediate, very intuitive ✅ Simple for those used to Google
Overall ergonomics ✅ Clear, fast, responsive interface ⚠️ Slower loading, sometimes confusing
UX customisation ✅ Custom GPTs, user memory ❌ No native customisation
Navigation & clarity ✅ Threaded organisation, contextual tools ⚠️ Linear experience, few visual cues

ChatGPT has a crystal-clear interface and extensive customisation options. It's quick to get to grips with, easy to navigate, and everything is designed to adapt to your needs over time.

Gemini, on the other hand, is more rigid. Effective if you already use the Google universe, but less customisable, and sometimes slower in terms of UX.

Gemini vs ChatGPT: compare integrations

In a world where every team is already using 10 to 15 SaaS tools, an AI needs to integrate seamlessly into the existing ecosystem. Let's see how Gemini 1.5 and ChatGPT-5 perform in this exercise.

Criteria Gemini 1.5 ChatGPT-5
Number of native integrations ✅ Excellent compatibility with Google Workspace (Docs, Sheets, Gmail, Meet) + YouTube Studio and Android. ❌ Few openings outside the Google universe. ✅ Wide range of integrations: Slack, Notion, Trello, HubSpot, Microsoft 365, Zapier... Ideal for hybrid environments.
Easy to connect ✅ Immediate connection if you're already on a Google Account. ⚠️ More complex to link external tools. ✅ Clear process via interface and plugins. ⚠️ Sometimes requires API authorisations.
Automation & API ⚠️ API via Google Cloud, geared more towards data and analytics. ❌ Less suited to no-code workflows or consumer automation. ✅ Open API, compatible with no-code (Zapier, Make) and custom integrations. Ideal for creating custom automation.
Marketplace / Plugins ❌ No dedicated marketplace, everything goes through the official Google services. ✅ ChatGPT Store with hundreds of plugins, from CRM to project tracking to image analysis.
Integration updates ✅ Google rolls out regular updates, especially for its native apps. ✅ OpenAI frequently updates plugins and APIs, at a steady pace to keep up with professional needs.

ChatGPT: a truly connected hub

ChatGPT benefits from an impressive ecosystem:

  • A store of plugins with over 1,000 connectors,
  • A documented API, compatible with most environments,
  • Easy integration with Zapier, Make, Slack, Notion, GitHub, Salesforce, HubSpot, etc.

Best of all, custom GPTs can act as mini-business applications, with their own integrations.

Gemini: high-performance, but locked in to Google

Gemini integrates perfectly with Google Workspace (Gmail, Docs, Sheets, Meet, Slides, etc.), as well as with Vertex AI on the data science side. But beyond that, integrations are rare or complex to set up, especially if you use non-Google SaaS tools.

There's no store of plugins, no simple external automation. You have to use third-party APIs or gateways, which complicates adoption.

👉 To remember

  • If you're looking for AI connected to your entire business ecosystem, ChatGPT is much more flexible.
  • If you're already in the Google world and don 't need external integrations, Gemini is more than enough.

When to choose Gemini or ChatGPT?

No need for unnecessary suspense: there is no universal winner. The best choice depends above all on your environment, your use cases and your level of requirements. Here are two typical profiles to help you decide.

Choose Gemini if...

✅ You already work in the Google universe: Gmail, Docs, Drive, Meet, Sheets... Gemini is designed to simplify your life without having to configure anything.

✅ Are your tasks multimodal: do you need to analyse documents, images, videos and text in a single stream? Gemini handles it all natively and seamlessly.

✅ You're looking for simple, fast and integrated AI, without worrying about plugins, APIs or complex customisation.

✅ You need a large contextual memory to process very long documents (1 million tokens available in Pro 2.5).

⚠️ But beware: Gemini is not very customisable and is less connected to third-party tools outside Google.

Choose ChatGPT if...

✅ You need ultra-customised AI: with bespoke GPTs, memory, and tone preferences, ChatGPT becomes your dedicated assistant.

✅ You use a variety of business tools (Notion, Slack, Jira, Trello, etc.): ChatGPT integrates easily with over 1,000 plugins and API integrations.

✅ You're a developer, analyst or product marketer: ChatGPT excels at code generation, file analysis and complex use cases.

✅ You're looking for a premium user experience: clear navigation, performance, speed, advanced customisation.

⚠️ The only downside: to access all the pro features, you'll need to opt for the paid version (€20/month).

Things to remember about the Gemini vs ChatGPT battle

Gemini and ChatGPT are not quite playing the same game, with one focusing on native integration and contextual power and the other on customisation and an open ecosystem.

👉 Here's a summary table to help you make the right choice for your needs:

Need Recommendation
Work in Google Workspace (Gmail, Docs...) ✅ Gemini
Create a personalised AI assistant ✅ ChatGPT
Generate, read or analyse long documents ✅ Gemini
Automate with Notion, Slack, Trello, etc. ✅ ChatGPT
Analyse images, audio and video ⚖️ Both (multimodal)
Have an AI that remembers your preferences ✅ ChatGPT (memory)
Take advantage of a rich store of plugins or APIs ✅ ChatGPT
Get to grips with AI quickly without config ✅ Gemini
Get the best possible UX ✅ ChatGPT

In a nutshell

  • If you're part of the Google ecosystem and want AI that's simple, fast and integrated, go for Gemini.
  • If you're looking for AI that's adaptable, connected to your business tools and capable of aligning with your business objectives, ChatGPT is unbeatable.

And the good news is that both are free in their basic version. Test them out and see which one fits in best with your day-to-day business.

    FAQ about Gemini vs ChatGPT

    1. Is Gemini free?

    Yes, a free version is available with Gemini Flash, but it is limited in terms of reasoning and response length. To unlock Gemini Pro, you need to subscribe to Google One AI Premium (~€21.99/month).

    2. Is ChatGPT free?

    Yes, GPT-3.5 is available for free on chat.openai.com. To use GPT-4o and the advanced features (files, memory, plugins), you need to upgrade to ChatGPT Plus ($20/month).

    3. Which is more suitable for businesses?

    👉 ChatGPT is more customisable and can be integrated into business tools (CRM, customer support, automation).
    👉 Gemini is better suited to companies already anchored in Google Workspace.

    4. Can I use these AIs with my own data?

    • ChatGPT Plus allows you to create a custom GPT with your files, databases or instructions.
    • Gemini can access your Google Drive documents, but does not yet allow you to train a dedicated template.

    5. Which AI is more reliable?

    ⚠️ Both can generate hallucinations.

    ChatGPT is often more precise in technical explanations, Gemini more effective in summarising large documents or videos.

    6. Which AI is better at coding?

    ChatGPT (especially GPT-4o) remains the benchmark for developers: multi-language understanding, debugging, documentation, GitHub integration, etc.

    Gemini is good in the Google ecosystem, but less accurate on complex projects.

    7. Can Gemini or ChatGPT be used for voice?

    • ChatGPT (GPT-4o) offers an amazing real-time conversational voice mode(in beta or soon to be deployed).
    • Gemini offers a more basic voice mode, with no comparable fluid interaction.

    8. Which AI generates the best images or videos?

    Neither of them specialises in this. But :

    • ChatGPT can integrate DALL-E 3 via plugins.
    • Gemini Ultra includes Veo 3, a video generation engine (in the ~€275/month plan).

    Article translated from French