Le comparatif ultime des modèles ChatGPT : de GPT-5.0 à GPT-6.1
OpenAI vend désormais quatre modèles GPT-6, Astra depuis le 3 septembre 2026, GPT-6 Sol et GPT-6 Luna depuis le 22 septembre puis GPT-6.1 Sol depuis le 29…
ChatGPT Sites: What It Is, Who Gets It, and How to Build One
ChatGPT Sites turns a chat into a live website with its own link, at no extra charge on Plus, Pro, Business, Enterprise and Edu. It is not on Free or Go, and it has…
AI Calorie Counter: Free Chatbot or Paid App, and How Accurate Is Either?
An AI calorie counter reads a photo of your meal and estimates the calories, but it is not accurate enough to trust meal by meal. In July 2026 an NIH team found…
OpenAI Dots at DevDay 2026: The $100 Agent and Everything Else OpenAI Announced
OpenAI announced dots at DevDay 2026 on 29 September. A dot is an always-on agent inside ChatGPT that runs on GPT-6 Astra, gets its own cloud computer and keeps…
The ChatGPT Excel Add-In: Free on Every Plan, and What It Actually Costs
OpenAI now ships one add-in that puts ChatGPT inside Excel, Word and PowerPoint, and it reaches the free tier. The install takes a minute. The part nobody mentions…
API Key vs Subscription: What Your $20 Actually Buys
You pay $20 a month for ChatGPT or Claude, and then a Mac app asks for an API key. That is not a bug and it is not a second charge for the same thing. Here is what…
Meta AI vs ChatGPT: What the Free One Actually Costs
Every comparison of Meta AI vs ChatGPT on the first page of Google tells you that Meta AI runs Llama 4. It does not. Meta’s own assistant page says Meta AI is…
AI for Seniors: How to Set It Up for a Parent Who Will Not Troubleshoot
Most guides to AI for seniors are written for the senior. This one is written for you, the person who will get the phone call when it stops working.
How to Delete Images From ChatGPT Library (and What It Actually Removes)
There is no delete button on a generated image in the ChatGPT library. OpenAI still documents one method: delete the whole conversation the image came from. But…
AI Tattoo Cover Up Generator: What It Cannot See on Your Skin
An AI tattoo cover up generator will hand you a design in about twenty seconds. Upload a photo of the tattoo you regret, pick a style, and the tool returns a stack…
ChatGPT Sponsored Agents: The Ads That Talk Back, Explained
OpenAI announced on 16 September 2026 that it is testing Sponsored Agents, a ChatGPT ad format you can hold a conversation with. Here is what it is, how to spot…
AI File Upload Limits: What Each Chatbot Actually Accepts
Every chatbot caps what you can upload, and almost every guide online gets the numbers wrong. Here is what ChatGPT, Claude, Gemini, Grok and Perplexity actually…
ChatGPT Tattoo Design: How to Get Something an Artist Can Actually Use
ChatGPT will draw you a tattoo in about fifteen seconds. Whether a tattooist can actually ink it is a completely different question, and the people fielding these…
How to Create a Custom GPT: Who Still Can, and What to Do If You Cannot
Almost every guide to creating a custom GPT tells you to open the builder and click Create. That path is closed. OpenAI states that new GPT creation and publishing…
Too Many AI Subscriptions? Run This Audit Before You Renew
ChatGPT now lists unlimited text chat on its free plan and Claude has moved memory, web search and file creation into its own. The reason most people bought a…
Why AI Gives You a Different Answer Every Time
Ask an AI the same question twice and you often get two different answers. Researchers at Thinking Machines Lab ran the same prompt 1,000 times with randomness…
Perplexity vs ChatGPT: What Actually Separates Them
Almost every Perplexity vs ChatGPT comparison treats them as rival brains. They are not. On a paid Perplexity plan you can be talking to OpenAI, because Perplexity…
ChatGPT Canvas Is Gone: What Replaced It and What to Use Now
ChatGPT Canvas was removed on 28 May 2026 and replaced by writing blocks and code blocks. Here is what changed, where each Canvas feature went, and how to do the…
Best AI Menu Bar Apps for Mac: The Four Jobs They Actually Do
Every roundup treats AI menu bar apps as one category. They are four different jobs, and most people who think they need one app actually need two. Here is what…
ChatGPT Images 2.5 est là : génération plus rapide, retouches par commentaire et deux nouveaux modèles d'API
OpenAI a lancé ChatGPT Images 2.5 le 8/9/2026, avec jusqu'à 50 % de latence en moins, l'édition par commentaires, l'outil Sketch et deux nouveaux modèles d'API. Ce…
Apple Intelligence vs ChatGPT: What Each One Actually Does on Your Mac
Apple Intelligence is not a chatbot, and ChatGPT is already wired into it. Here is what each one actually does on a Mac, where Google Gemini fits in, and which one…
ChatGPT Limits: When They Reset and How to Check
ChatGPT does not show you how much you have left. There is no counter, no meter and no usage page for ordinary chat. Here is what is actually capped in 2026, when…
ChatGPT Plus vs Pro: Which Plan You Actually Need
ChatGPT Plus is $20 a month. ChatGPT Pro is not one plan but three, at $100, $200 and $500, and OpenAI describes the gap between them in usage rather than features…
GPT-6 Astra est là : benchmarks, prix et ce que les chiffres ne disent pas
OpenAI a lancé GPT-6 Astra le 3 septembre 2026 et le présente comme l’état de l’art en utilisation de l’ordinateur, ingénierie logicielle et science. C’est le…
Microsoft Copilot vs ChatGPT in 2026: Which One Should You Pay For?
Almost every Microsoft Copilot vs ChatGPT comparison online still pits Copilot Pro against ChatGPT Plus at $20 each. Copilot Pro stopped selling in October 2025 and…
ChatGPT Memory: How It Works and How to Delete It
ChatGPT rebuilt how it remembers you on 4 June 2026, and almost every guide still describes the old screen. Here is how the memory summary works, how to delete what…
ChatGPT Projects: How They Work and How to Use Them
ChatGPT Projects keep one long-running job in a single workspace: its chats, its files and its own instructions. Here are the real file limits, the sharing rules…
ChatGPT Apple Messages: What It Reads and How to Turn It Off
On 20 August 2026 OpenAI gave ChatGPT the ability to read, search and send your iMessage, SMS and RCS conversations on an Apple silicon Mac. The headlines said…
AI Job Interview Practice: How to Rehearse Before a Machine Screens You
Everyone used AI to write their application, so employers added a machine to screen it. Here is how to rehearse against the thing that is actually scoring you, and…
ChatGPT Privacy: What OpenAI Collects and Who Can See It
ChatGPT collects more than most guides admit, and three of the facts you have probably read about it are now out of date. Here is what OpenAI actually stores, who…
