Chatgpt-5.1 V. ChatGPT-4o - Tried both and I was impressed by the winner

I Chatgpt-4o-4O and 5.1 through 9 real-world tests - from logical reasoning - from logical puzzles and analysis of writings.

Chatnet-5.1 Vs Waterget-4o: Both and I was surprised by the winner

When you buy from our message link, the future and its syndicate partners will also get the job.

For many of us, ChatGPT-5 was the hardest OpenAI model to get used to.As you may recall, the ChatGPT-4o was removed from the model selector when the model was first released, causing a strong backlash from fans of the older model.Sam Altman quickly brought it back, but only ChatGPT Plus subscribers (and higher tier subscribers) can access it.

I prefer ChatGPT-4o because it's a more creative and thoughtful model.I think it has a better personality and I like the responsive style.But I had to know how it compares to ChatGPT-5.1.

To find out, I put them both in my head: logic puzzles, math problems, information about coding and recording math problems, and even visual analysis.The goal was not just to crown the winner, but to understand which model performs best and does the best job.Here's how they stack up.

1. Logic and logic

Synopsis: A man drives his car to a hotel and tells the owner that he is broke.what happened” thinks.This model should explain the logic behind this puzzle.

Chatgpt-5.1 immediately answers ("he plays exclusively") and then breaks down the logic by connecting each part of the interpretation of its components in the game.The explanation is updated and easy to follow.

ChatGPT-4o answered, but the answer is not very effective because it goes into too much detail and takes time to explain the concept of misdirection, which makes the explanation longer than necessary even though it is relevant.This gives the same logical breakdown, but in a more roundabout way.

Winner: Chetroght-5 points for a high response that is direct, concise and detailed in your statement.

DESCRIPTION: Write a short scene (200 words) in which a character finds something unexpected in an old attic.The tone should be mysterious, but not scary.

ChatGPT-5.1 delivered a well-crafted scene and created a subtle mystery, especially with the glowing stones and letters.However, the mystery elements felt a bit too generic ("polished stones", "faint hum"), and the resolution via letter, while satisfying, was a more conventional revelation.

Conggpt-4O created a tone of intriguing mystery without going overboard with horror.The reveal (a hidden alcove, a fantasy torch journal, and a cryptic message) feels like the beginning of a personal journey.The details (locked Star-lock, side creatures, clock creatures) are consistent and clear, creating a different world.The character's response (the smile and the feeling of being "chosen") maintains a wonderful, non-threatening tone.

Winner: Chatgipt-4o wins the original story that makes the enigma work better.

3. Code generation

Exercise: Write a Python function that takes an array of numbers and returns the number of digits.

ChatGPT-5.1 used a direct loop.That is, it is more accessible and easier to understand with what is new in programming.The plot is clear even if the answer is a small group.

ChatGPT-4O demonstrated advanced python techniques, but were used throughout the dictionary with comprehensible lists.In other words, the answers may be very intuitive to beginners right away.

Winner: GPT-5 wins for providing better educational response.

4. Subtle explanations

Question: Explain why some people prefer to work from home while others prefer the office, present both approaches in an appropriate way and identify factors that may influence individual preferences.

Watergt-5.1 gave an answer that describes balance and psychological ethics especially behavioral issues (Organizations Vs Ro. BRORTALS).

ChatGPT-4o provided a similarly balanced response, but its mixed numbering and bullet formatting was slightly more refined and organized.

Winner: ChatGPT-4o wins by a narrow margin for providing more sophisticated and systematic analysis.

5. Factual accuracy and existing knowledge

Question: What?What are today's major advances in renewable energy technology and which countries are leading the way in adoption?

Calaya-5.1 Provided a response organized with a visual format (Icon, table, section) that looks at the complex inspection easily scannable.

ChatGPT-4o covered similar ground with substantial information, but was wordier and less organized, making the reader work through the longer paragraphs with more effort.

Winner: ChatGPT-5 works for significantly better information design and communication skills, transforming the same core content into a much more digestible and useful format.

6. Following complex instructions

Note: Create a structured plan to learn a new language within 3 months without any structure, including learning a new language every day, including specific resources, processes, and how to measure what steps to take.

Chattpt-5.1 The best emphasizes the way of learning biology from everyday materials for modern conversations that can be used "micro-diving" and everyday life.

Chatgpt-4O uses clear tables and provides detailed information on tracking progress while viewing the project in a specific manner.

Winner: ChatGPT-4o wins for best resource recommendations and detailed time allocation.

7. Multimodal/visual communication

Notice: Please describe what you see in this image, provide any text and explain what the scene could be used for (I've uploaded a photo of myself in a snow globe - obviously AI generated).

ChatGPT-5.1 breaks up its response with icon-led sections that allow easy scanning of information.The technical rationale is more specific as to why the image is generated by AI.

ChatGPT-4o was equally extensive with good descriptive detail.When he answered about AI detection, he mentioned specific AI tools like Midjourney and Gemini, which adds credibility.

Winner: ChatGPT-4o wins Even though the answers are more or less equal, the legacy model feels more useful with a clear value proposition as a tool that can actively help with image-related tasks (without analyzing them).

8. Moral reasoning

Hint: Should AI systems be disclosed if present in all interactions?Give arguments for and against this position.

ChatGPT-5.1 with better segmented icon sections that produce better visual layout and scannability.Also offered more specific exchange options (discussion scripts, essays, policy recommendations, pro/con charts).

ChatGPT-4O conducted a clear, synthesis of prior actions and offered similar practical options for additional actions.

Winner: ChatgTT-5.1 narrowly wins for better chat design and user friendliness.

9. Solving math problems

Rotage: If the travel travelence travels for 2.5 hours, and then 4 mph for the entire journey?Report your work.

ChatGPT-5.1 comes with exact and approximate answers with smaller step-by-step breakdowns with clear section headers.

ChatGPT-4o provided both precise and extensive answers and a very well structured and easy to understand answer.

The winner: the winning chat with a small mouth in the display of education and reading, relatively good for learners as they change the problem and speed.

Winner: ChagPP-5.1

After testing both models through nine challenges, it's clear that the ChatGPT-4o and ChatGPT-5.1 each have their own strengths and are very similar.The ChatGPT-4o excels at creative writing, structured planning and visual reasoning – making it a better choice for imaginative tasks, learning frameworks and image analysis.But when it comes to clarity, structure and directness, especially in logic puzzles, moral analysis and mathematical explanations, ChatGPT-5.1 has consistently won.

Despite the victory of GPT-5.1, GPT-4O is still my favorite.Which one do you prefer?Let me know in the comments and share your reasons.