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Nicolas Dabene
Nicolas Dabene

Posted on • Edited on • Originally published at nicolas-dabene.fr

Gemini Canvas vs GPT-5: Which Creates the Best Presentation?

Gemini Canvas vs GPT-5: Who Reigns Supreme in Presentation Generation?

Introduction: The Battle for Better Presentations

Crafting a compelling and visually appealing presentation can often feel like a massive time sink. What if artificial intelligence could shoulder that burden, transforming raw text or a simple link into a polished, visual narrative? Google's Gemini, with its innovative Canvas feature, steps onto the scene promising just that.

But how does this new contender stack up against the established titan, GPT-5? I put both to the ultimate test:

My mission: Generate a Google Slides presentation from my article:
👉 Developer Skills Evolution in 2025

The exact command given to both AIs was simple:

🧠 Prompt:
“I want to create a Google Slides presentation on https://nicolas-dabene.fr/articles/2025/11/10/evolution-competences-developpeurs/”

The outcomes? Radically different, and remarkably insightful.


🎨 Gemini Canvas: Google's Seamless Visual Storyteller

Gemini introduces a genuine game-changer: an integrated visual design studio. With Canvas, anyone can effortlessly conjure a slide deck using text, a URL, or even uploaded images. It's a leap forward for automated content creation.

🔧 How This Magic Happens

  1. Navigate to GeminiTools → Canvas.
  2. Input your topic, paste text, or drop a URL.
  3. Click "Create presentation."
  4. Gemini instantly crafts:
    • A well-structured outline (covering introduction, core content, and conclusion).
    • Consistent visual themes with curated colors and fonts.
    • AI-generated imagery to complement your points.
    • Even LaTeX rendering for complex equations or structured tables.

💡 Canvas offers direct content editing, slide additions, and a one-click export to Google Slides, making the entire workflow remarkably smooth.

🎯 My Experience with Gemini Canvas

Within moments, Gemini presented me with:

  • Slides that flowed logically and were clearly organized.
  • A polished aesthetic, mirroring Google Slides' clean design principles.
  • Intuitively chosen visuals, perfectly aligning with themes of future development and AI.
  • A coherent structure, including:
    1. Setting the Stage: Introduction & Context
    2. The Evolving Skill Landscape
    3. Anticipating Market Demands
    4. AI's Transformative Role
    5. Looking Ahead: Conclusion & Outlook

The final output was crisp, easy to digest, and ready for immediate use.


🤖 GPT-5: A Stumbling Block in Presentation Design

In stark contrast, GPT-5 delivered a performance that fell far short of Gemini Canvas. Without an exceptionally detailed and prescriptive initial prompt, the resulting presentation draft was impractical for direct use.

Key Limitations I Encountered

  • Raw and Unrefined Output: Significant manual re-engineering was needed to make it presentable.
  • No Integrated Visuals: Lacked native image generation; visual elements would require a separate plugin.
  • Disjointed Structure: The organization often felt haphazard unless guided by a very precise prompt.
  • Inconsistent Formatting: Layout was either absent or erratic, demanding constant adjustments.
  • Iterative Headache: Frequently required multiple attempts to achieve even a passable draft.

What GPT-5 Can Achieve (with Herculean Effort)

  • API Integration Potential: Possible to link with PowerPoint or Google Slides via API, though setup is notoriously complex.
  • Rich Textual Foundation: Can generate comprehensive content, but it often leans towards verbose paragraphs rather than concise slide points.
  • Narrative Strength (Conditional): Shows strong storytelling capability only if the prompt is meticulously crafted.

⚠️ The Verdict: For visual presentation creation, GPT-5 simply isn't a match for Gemini Canvas. Any perceived time-saving from AI generation is quickly negated by the extensive post-production required.


⚔️ A Head-to-Head Comparison

Criterion Gemini Canvas GPT-5
Ease of Use ⭐⭐⭐⭐⭐
Visual Appeal Professional, polished Non-existent without extensive redesign
Content Quality Balanced, immediately usable Often too dense, lacks slide-friendly structure
Outline Creativity Standard, highly effective Inconsistent without an elaborate prompt
Slides Integration Native (one click) Via API (complex configuration)
LaTeX / PDF Support Yes Partial
Immediate Readiness ✅ Directly deployable ❌ Requires substantial manual overhaul
Target Audience Everyone from novice to pro Tech-savvy users prepared for deep iteration

📚 Beyond Presentations: Inspiring Use Cases

Gemini Canvas's utility extends far beyond just slide decks:

  • 🎓 Students: Convert dense study notes into engaging, interactive quizzes.
  • 💼 Professionals: Transform meeting minutes into actionable project plans or polished reports.
  • 🧑‍💻 Developers: Visualize complex code structures, analyze log files, or interpret AI model outputs.

Plus, with its integrated LaTeX rendering, scientists and academics can effortlessly prepare intricate equations and formulas without needing extra software.


📂 Witness the Results Yourself

I've made both presentations available for your direct comparison — Gemini vs GPT-5 — so you can form your own judgment:

➡️ Download the full presentations:

👉 Observe how the tone, visual execution, and content density diverge dramatically, even when built from the same foundation.


Conclusion: Gemini Canvas, the Clear Frontrunner

Between Gemini Canvas and GPT-5, the winner for presentation creation is unequivocally Gemini Canvas.

  • Gemini Canvas delivers an out-of-the-box solution with visual harmony, a logical flow, and seamless integration with Google Slides. It stands as the ultimate tool for anyone prioritizing efficiency and quality.
  • GPT-5, conversely, struggles significantly in this domain. Without an incredibly detailed prompt, its output demands extensive manual intervention, effectively negating any potential productivity gains. It simply isn't engineered for visual presentation generation.

My definitive recommendation: For rapid, effective, and visually appealing presentations, Gemini Canvas is the unparalleled choice. While GPT-5 might offer value in refining textual content for slides, it should not be considered a primary tool for creating the visual deck itself.

Top comments (2)

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cyber8080 profile image
Cyber Safety Zone

Really impressive work on the project! Leveraging AI to let users simply talk to their task manager (e.g., “Create a task to finish the report by Friday…”) is such an elegant UX improvement. I especially like the inclusion of webhooks so the system isn’t just passive but can trigger downstream automation (CRM updates, emails, etc.) — that really takes it to the next level.

A few thoughts on how to push it further:

  • It would be great to hear more about how you handle task data privacy and self-hosting security concerns (given you’re offering this OSS & self-hostable).
  • Some use-case examples of how small teams or freelancers are using it (or could use it) might help readers imagine the possibilities.
  • If there are plans for integrations (e.g., with popular calendar apps, Slack/Teams, or mobile notifications), a roadmap mention could drum up interest.

Overall — fantastic job! I look forward to trying out the demo and maybe spinning it up on my own infrastructure. Thanks for sharing this open-source tool!

Feel free to tweak it (tone, length) to best match your voice.

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ndabene profile image
Nicolas Dabene

Thanks a lot for your thoughtful feedback — really appreciate it!

You're absolutely right: the moment we start letting AI drive interfaces like task managers, slide generators or automation systems, questions about privacy, security and concrete use-cases become central.
I’m currently experimenting with a fully self-hosted setup (n8n + LLMs + connectors) so users can keep their data local while still benefiting from intelligent automation. A more detailed breakdown of the architecture — and the security side — is definitely something I can dive into in a future piece.

Use-cases are also coming! I’m gathering real workflows from freelancers and small teams who are already using this type of “AI-assisted creation” to speed up content, presentations and routine operations.

And yes — integrations are part of the roadmap. Calendar apps, Slack/Teams, and mobile notifications are at the top of the list because they close the loop between “AI generates something” and “the action actually happens”.

Thanks again for the suggestions — they help shape what comes next. Big updates soon! 🚀