🎙️ Imagine that your AI assistant doesn't just answer questions, but holds a real conversation: warmer, more natural, without unnecessary jargon or mistakes. But after the release of GPT-5 in August 2025, users complained about its robotic nature and insufficient accuracy in complex tasks. Did OpenAI manage to fix this? 💡 Spoiler: yes, GPT-5.1, released on November 12, 2025, makes ChatGPT smarter, more adaptive, with new modes and styles for perfect communication.
⚡ In Brief
- ✅ **Key Point 1:** GPT-5.1 makes ChatGPT warmer and more natural, with two modes: Instant for quick answers and Thinking for deep analysis.
- ✅ **Key Point 2:** Style control is improved with 6 presets and hallucinations are reduced, making the model more accurate in math, code, and science.
- ✅ **Key Point 3:** Available to all users, with practical applications in business, education, and creativity, but with some limitations, such as overconfidence.
- 🎯 **You Will Get:** A detailed overview of features, comparison, community feedback, and tips for usage.
- 👇 **Read the details below** — with examples and conclusions
Table of Contents:
- 📌 Section 1: What is GPT-5.1?
- 📌 Section 2: Key Innovations
- 📌 Section 3: Operating Modes (Instant and Thinking)
- 📌 Section 4: Improved Style Control
- 📌 Section 5: Performance and Benchmarks
- 💼 Section 6: Practical Applications
- 💼 Section 7: Weaknesses and Limitations
- 💼 Section 8: Community Feedback and First Impressions
- ❓ Frequently Asked Questions (FAQ)
- ✅ Conclusions
✅ **GPT-5.1** — an updated version of artificial intelligence from OpenAI, released on November 12, 2025, to improve the quality of communication and reduce errors.
🤖 Section 1: What is GPT-5.1?
🔄 **GPT-5.1** is an update to the flagship OpenAI model, released on November 12, 2025, in response to feedback on GPT-5. The model significantly improves the naturalness of communication and the accuracy of responses compared to previous versions.
📊 Availability and Deployment
🎯 The model is available in ChatGPT for all categories of users:
- 💼 Paid subscriptions (Plus, Pro, Business)
- 🆓 Free version
- 🔧 API versions: gpt-5.1-chat-latest and gpt-5.1
The older GPT-5 remains available to paid users for a transition period of 3 months.
🎯 Main Goals of the Update
- 💬 Improve the humanity and naturalness of communication
- 🚫 Reduce the number of hallucinations and errors
- 🎯 Adapt thinking to specific tasks
- 📈 Increase accuracy in complex calculations
🔬 Technical Specifications
- 📊 Model Size: 1.7–1.8 trillion parameters
- 🎨 Full Multimodality (text, images, diagrams)
- 👨🎓 Expertise Level: "PhD-level"
- ⚡ Improved request processing speed
🚀 **GPT-5.1** introduces revolutionary changes: adaptive reasoning, improved communication, and specialized modes for education, coding, and business.
🎯 Section 2: Key Innovations
🔄 **GPT-5.1**, released on November 12, 2025, is an iterative update to the GPT-5 series that focuses on the balance between intelligence, speed, and the "humanity" of communication.
🧠 Adaptive Reasoning
The main innovation — the model dynamically evaluates the complexity of the query and adjusts the processing time:
- ⚡ **Simple queries** ("What is the weather in Kyiv?") — response in 2 seconds, 50% fewer tokens
- 🎯 **Complex tasks** (AIME 2025 math problems) — deep analysis with a reasoning structure
- 📈 **Result**: 20–30% more efficient than GPT-5 with lower token consumption
💬 Improved Communication
- 🎭 Warmer, more natural tone without loss of accuracy
- 📝 Better adherence to instructions in long dialogues (30+ messages)
- 🔍 Fewer deviations from the prompt and hallucinations
🎓 New Modes and Features
📚 Study Mode for Education
- 🎯 Personalized lesson plans
- 📊 Visualization of complex topics
- 🎮 Interactive quizzes and games
🖼️ Multimodal Analysis with OCR
- 📷 Text recognition from images
- 📄 Processing of PDF documents
📈 Analysis of graphs and diagrams
📅 Calendar and Gmail Integration
- 🗓️ Automatic schedule planning
- 📧 Email analysis for personalization
- ⏰ Smart reminders and priorities
⚙️ Specialized Models
💻 GPT-5.1-Codex
- 🚀 Optimized for coding
- 🔧 Integration with GitHub Copilot
- 📊 74.9% on SWE-bench (vs. 69.1% on GPT-5)
🏢 GPT-5.1 Pro
- 🔒 Improved ethical filters
- 💼 Support for Windows environment
📈 Business analytics and reporting
🔧 API Updates for Developers
| ⚙️ Parameter | 📝 Description | 🎯 Example Usage |
|---|---|---|
| "minimal" | Minimal reasoning mode | Chatbots: responses in 2 seconds |
| Support for free text | Custom tools with regex | Database integration |
| "verbosity" | Control of response detail | Education: high for Study Mode |
📊 **Performance:** According to Balyasny Asset Management, GPT-5.1 is 2–3 times faster than GPT-5 with half the tokens for similar quality.
⚡ **GPT-5.1** offers three intelligent modes: Instant for quick answers, Thinking for deep analysis, and Auto for automatic selection of the optimal approach.
🎛️ Section 3: Operating Modes (Instant and Thinking)
🔄 **GPT-5.1** introduces two main operating modes — **Instant** and **Thinking** — which make interacting with ChatGPT more flexible and efficient.
🚀 GPT-5.1 Instant
- ⚡ **Speed:** Responses in 1–2 seconds
- 💬 **Style:** Warm, natural, conversational
- 🎯 **For what:** Casual chats, brainstorming, quick consultations
- 📊 **Efficiency:** 2 times faster than GPT-5 with fewer tokens
🤔 GPT-5.1 Thinking
- 🎯 **Purpose:** Deep analysis of complex tasks
- 📝 **Structure:** Analysis → conclusion → formulation
- 🔬 **Examples:** Mathematical problems, coding, scientific research
- 📈 **Accuracy:** 92% on AIME 2025 problems, 85% on Codeforces
🔄 Auto-Mode
- 🤖 **How it works:** Automatic selection between Instant and Thinking
- 🎯 **Advantages:** Not counted towards the Thinking limit
- 💡 **Intelligence:** Analyzes the query, history, and user preferences
📊 Comparative Table of Modes
| 📋 Characteristic | ⚡ GPT-5.1 Instant | 🤔 GPT-5.1 Thinking | 🔄 Auto-Mode |
|---|---|---|---|
| **Speed** | Instant (1–2 s) | Adaptive | Automatic selection |
| **Style** | Warm, conversational | Empathic, with explanations | Depends on the task |
| **Examples** | Weather, brainstorming | Math, coding | Mixed chats |
| **API** | gpt-5.1-chat-latest with minimal | gpt-5.1 with adaptive | Auto-routing |
| **Limit (Plus/Pro)** | No limits | 3000 messages/week | Not counted towards the limit |
🧪 Testing Tips
- 🎭 **For Instant:** "Tell an AI joke"
- 🔢 **For Thinking:** "Solve the equation $x^2 + 3x - 4 = 0$ with explanation"
- 🔄 **For Auto:** Mixed queries to check automatic selection
🎯 **Conclusion:** These modes implement the concept of "hybrid cognitive design," where AI mimics human thinking — fast on routine tasks and deep on complex tasks.
🎨 **GPT-5.1** offers extended style control with 6–8 personalized presets, allowing you to customize the AI to your unique communication style.
🎭 Section 4: Improved Style Control
🔄 **GPT-5.1** introduces revolutionary style control, which makes the AI more personalized and natural in communication.
👥 Personality Presets
⚖️ Default
Balanced, neutral style for general chats
😊 Friendly
Warm, empathic with emojis and compliments
⚡ Efficient
Concise, to the point - minimum words, maximum utility
👔 Professional
Formal, accurate without slang or emotions
🎯 Candid
Direct, honest - tells the truth without embellishment
🤪 Quirky
Eccentric, with humor and creativity
🎛️ Additional Settings
**Warmth**
From cold to cozy tone
**Formality**
From casual to strict style
**Emojis**
Control of emoji usage frequency
**Empathy**
Level of compassion and understanding
📊 Examples of Styles in Action
🤪 Quirky Mode
"AI? Oh, that's the guy who steals your jokes, but does it with a smile 😏"
🎯 Candid + high warmth
"Honestly, it's not perfect, but let's find a solution together"
👔 Professional
"According to the data, the following options are recommended for consideration..."
📋 Style Table
| 🎭 Preset | 📝 Description | 💬 Example Phrase |
|---|---|---|
| **Default** | Neutral balance | "Here are the key facts..." |
| **Friendly** | Warm, with emojis | "Absolutely! 😊 Let's break down..." |
| **Efficient** | Concise | "1. Fact. 2. Conclusion." |
| **Professional** | Formal | "According to the data, it is recommended..." |
| **Candid** | Direct | "To be honest, it's not ideal, because..." |
| **Quirky** | Humorous | "AI is like a cat: independent, but always nearby! 🐱" |
💡 **Available in:** Settings → Personalization in ChatGPT and via the API parameter verbosity
