ChatGPT 5.1(GPT-5.1) - Official
OpenAI's GPT-5.1 is an upgraded version of ChatGPT that introduces two new models - Instant and Thinking - with improved conversational abilities, adaptive reasoning, and customizable personality settings.
https://chatgpt.com/
Product Information
Updated:Nov 16, 2025
ChatGPT 5.1(GPT-5.1) - Official Monthly Traffic Trends
ChatGPT 5.1 achieved 6.2B visits with a 4.4% increase in traffic. The launch of the AI-powered web browser, ChatGPT Atlas, and the introduction of GPT-5.1 with three distinct modes—Instant, Thinking, and Auto— likely contributed to this growth. However, the slight increase suggests that these updates, while significant, did not dramatically boost traffic.
What is ChatGPT 5.1(GPT-5.1) - Official
GPT-5.1 is OpenAI's latest update to their flagship ChatGPT model, released as a significant improvement over GPT-5. The update introduces two distinct models: GPT-5.1 Instant, which is warmer and more conversational by default, and GPT-5.1 Thinking, which provides deeper reasoning capabilities for complex tasks. This release addresses user feedback that AI should be both intelligent and enjoyable to interact with, while offering more intuitive controls for customizing ChatGPT's tone and personality.
Key Features of ChatGPT 5.1(GPT-5.1) - Official
ChatGPT 5.1 is OpenAI's latest update featuring two new models - GPT-5.1 Instant and GPT-5.1 Thinking. The update focuses on improved intelligence, faster responses, and more natural conversations with customizable tone options. GPT-5.1 Instant provides quick, warm responses for casual interactions while GPT-5.1 Thinking offers deeper reasoning for complex tasks, with adaptive computation that adjusts processing time based on query complexity.
Dual Model System: Split between GPT-5.1 Instant for fast, casual responses and GPT-5.1 Thinking for complex reasoning, with automatic routing between them based on task requirements
Customizable Personalities: New personality options including default, friendly, efficient, professional, candid, and quirky, with improved controls to adjust tone, style and emoji usage
Adaptive Reasoning: Dynamic adjustment of processing time - faster for simple tasks and more deliberate for complex problems requiring deeper analysis
Enhanced Instruction Following: Better adherence to user instructions and custom preferences across multiple conversation rounds, with improved clarity in technical explanations
Use Cases of ChatGPT 5.1(GPT-5.1) - Official
Professional Writing: Efficient assistance with writing, editing and content creation with adjustable tone for different audiences and purposes
Technical Problem Solving: Deep analysis for complex coding, scientific questions, and data analysis with clearer, less jargon-heavy explanations
Casual Conversation: More natural and engaging chat interactions with customizable personality for personal use and informal discussions
Educational Support: Improved learning assistance with clearer explanations and adaptive response styles based on topic complexity
Pros
More natural and warmer conversational style
Improved reasoning and instruction following
Flexible personality customization options
Cons
Usage limits for free tier (10 messages/5 hours)
Temporary increased limits may revert in future
Legacy GPT-5 models only available for 3 months
How to Use ChatGPT 5.1(GPT-5.1) - Official
Access ChatGPT: Log into your ChatGPT account. GPT-5.1 is rolling out first to paid users (Pro, Plus, Go, Business plans) followed by free users
Select GPT-5.1 Auto mode: GPT-5.1 Auto will automatically choose between Instant and Thinking modes based on your query complexity. This is the recommended default setting
Choose a conversation style: Select from 8 preset personality options: Default, Friendly, Efficient, Professional, Candid, Quirky, Cynical, or Nerdy. These help customize the tone of responses
Adjust personalization settings: Fine-tune preferences for conciseness, warmth, scannability and emoji usage in the ChatGPT personalization tab to match your preferred interaction style
Start conversing: Type your questions or prompts. GPT-5.1 Instant will handle most everyday tasks with a warmer, more conversational tone. Complex queries will automatically route to GPT-5.1 Thinking mode
Monitor usage limits: Plus users can send up to 160 messages with GPT-5.1 every 3 hours before switching to mini version. Business and Pro users have unlimited access subject to abuse guardrails
Access legacy models: Previous GPT-5 models remain available for 3 months via the legacy models dropdown menu for paid subscribers who want to compare
ChatGPT 5.1(GPT-5.1) - Official FAQs
GPT-5.1 features include: warmer and more conversational default tone, improved accuracy in following instructions, better code planning, reduced hallucinations, adaptive computation for varying thinking time, and new tone controls for customizing responses.
ChatGPT 5.1(GPT-5.1) - Official Video
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Analytics of ChatGPT 5.1(GPT-5.1) - Official Website
ChatGPT 5.1(GPT-5.1) - Official Traffic & Rankings
6.2B
Monthly Visits
#6
Global Rank
#1
Category Rank
Traffic Trends: Nov 2024-Oct 2025
ChatGPT 5.1(GPT-5.1) - Official User Insights
00:06:25
Avg. Visit Duration
3.84
Pages Per Visit
31.18%
User Bounce Rate
Top Regions of ChatGPT 5.1(GPT-5.1) - Official
US: 19.78%
IN: 7.03%
BR: 5.24%
JP: 3.8%
GB: 3.34%
Others: 60.81%
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