GPT-5 – OpenAI’s Latest and Most Powerful AI Model

What is GPT-5？

GPT-5 is the latest artificial intelligence model released by OpenAI and is currently the most powerful model available to all users. GPT-5 is a unified system that includes a base model for answering common questions, a deep reasoning model (the GPT-5 Thinking Module) for handling complex problems, and a real-time routing module that intelligently dispatches models based on the type of conversation, question complexity, tool requirements, and user instructions (such as “think carefully”). GPT-5 excels in multiple fields such as programming, writing, mathematics, and health, significantly reducing hallucinations and errors while providing more accurate and realistic answers. It supports multimodal inputs, handling both images and text. GPT-5 offers three usage modes—Free, Plus, and Pro—to meet different user needs.

Main Features of GPT-5

• Efficient Answering and Reasoning: Automatically switches between the base and deep reasoning models according to question complexity, providing fast responses for common queries and in-depth thinking for complex issues.

• Programming Ability: GPT-5 is OpenAI’s strongest programming model, capable of generating high-quality code, debugging large codebases, and excelling in production-level tasks.

• Writing and Creative Expression: Transforms rough ideas into well-crafted writing with literary depth and rhythm, supports multiple writing styles, and offers creative inspiration.

• Health Consultation: Performs better on health-related questions by providing precise advice, proactively highlighting potential issues, and ensuring safe and reliable answers.

• Multimodal Understanding: Supports image and video inputs, capable of visual reasoning and spatial analysis, handling multimodal tasks.

• Reduced Hallucinations and Improved Accuracy: Dramatically lowers hallucination rates, reduces factual errors, and delivers more honest and accurate responses.

• Safety and Reliability: Introduces “safe completion” training to reduce deceptive behaviors, ensuring safety especially in high-risk domains such as biology and chemistry.

• Customization and Personalization: Offers four preset personalities—Cynic, Robot, Listener, and Nerd—for users to choose interaction styles according to their preferences.

• Multilingual Support: Supports conversations in multiple languages, able to understand and generate content across various languages to assist with language conversion.

• API Support: Provides multiple model options via API (GPT-5, GPT-5 mini, GPT-5 nano) with flexible pricing for developers.

GPT-5 Versions

• GPT-5: Default version suitable for most general tasks, automatically switches between base and deep reasoning models.

• GPT-5 Mini: Smaller, faster version suitable for lightweight tasks or continued use after usage limits are reached.

• GPT-5 Nano: The smallest version designed for developers, ideal for rapid prototyping and efficient lightweight task handling.

• GPT-5 Pro: Advanced version exclusive for Pro subscribers, utilizing more powerful computing resources, suitable for complex tasks and deep reasoning.

GPT-5 Performance

Programming and Toolchain:

• SWE-bench Verified: 74.9% (GPT-4: 52%, o3: 69.1%)

• Aider Polyglot: 88%, with 33% fewer errors than o3

• Frontend Development: 70% internal test win rate

• τ²-bench Toolchain Tasks: 96.7%

Mathematics and Multimodal Abilities:

• AIME 2025 Math Evaluation: Pro+Python mode 100%

• MMMU Multimodal Understanding: 84.2%

Professional Fields:

• HealthBench Hard (Medical): 46.2%

Knowledge Accuracy and Reliability:

• Error rate about 45% lower than GPT-4o

• Thinking mode errors about 80% lower than o3

• Hallucination rate only 1/6 of o3

• Deception rate 2.1% (o3 was 4.8%)

Human Interaction and Style:

• Sycophancy dropped to 6% (GPT-4 was 14.5%)

Official Website

• Official website: ChatGPT

How to Use GPT-5

Accessing the Official Website:

• Visit the official GPT-5 website at ChatGPT.

Free Users:

• Access Method: GPT-5 is globally available, and free users can use it directly within ChatGPT.

• Limitations: Free users have significantly limited GPT-5 usage. Once the usage quota is exhausted, the model will switch to GPT-5 Mini.

Plus Users:

• Plus users have higher GPT-5 usage limits.

• Additional Feature: Plus users can use GPT-5 in the Codex CLI with “Thinking Mode” enabled.

Pro Users:

• Pro users have unlimited access to GPT-5 and can use GPT-5 Pro.

• Features: Pro users can access all GPT-5 functionalities, including advanced programming and creative tools.

Enterprise and Education Users:

• Enterprise and education users will receive access within one week.

Using GPT-5 via API:

API Call Methods:

• Supported Models: The GPT-5 models supported in the API include gpt-5, gpt-5-mini, gpt-5-nano, and gpt-5-chat.

• Input and Output: Supports multimodal input including images and text, with text output.

• Endpoints: Supports endpoints such as /chat/completions, /responses, and /assistants.

Supported Features:

• Streaming: Supports streaming output.

• Function Calling: Supports function calls.

• Structured Outputs: Supports structured outputs.

• Fine-tuning: Supports model fine-tuning.

• Responses API: Supports Web search, File search, Code interpreter, MCP, and other functions.

GPT-5 Pricing

• Free users: Free access with usage limits

• Plus users: $20/month, higher usage limits, suitable for frequent daily use

• Pro users: $200/month, unlimited access with GPT-5 Pro features

• API pricing:

  • GPT-5: $1.25 per million input tokens, $10 per million output tokens

  • GPT-5 Mini: $0.25 per million input tokens, $2 per million output tokens

  • GPT-5 Nano: $0.05 per million input tokens, $0.40 per million output tokens

Application Scenarios of GPT-5

• Programming Development: Generate high-quality code, debug large codebases, excel in production tasks; ideal for software development, frontend design, and complex system development.

• Writing and Creativity: Transform rough ideas into refined, literary writing with rhythm, supporting various styles; suitable for articles, reports, poetry, and creative writing.

• Health Consultation: Provide accurate advice, proactively alert potential issues, and ensure safe and reliable answers; suitable for health consulting and medical popularization.

• Multimodal Tasks: Perform visual reasoning and spatial analysis; useful for chart interpretation, photo summarization, and other multimodal tasks.

• Complex Problem Solving: Handle scientific research, advanced education, and professional consulting involving complex science problems, math challenges, and multi-step tasks.

Official GPT-5 Examples

Jumping Ball Game
Prompt: Create a single-page app in a single HTML file with the following requirements:

• Name: Jumping Ball Runner

• Goal: Jump over obstacles to survive as long as possible

• Features: Increasing speed, high score tracking, retry button, funny sound effects for actions and events

• UI: Colorful with parallax scrolling backgrounds

• Characters: Cartoonish and fun to watch

• Game experience: Suitable for all players

Pixel Art App
Prompt: Create a single-page app, in a single HTML file, that provides a retro pixel painting experience with:

• Canvas: fixed pixel grid with zoom; pencil, eraser, fill, line, rectangle, circle tools; grid toggle

• Palette: 16-color swatches with two custom slots; eyedropper; foreground/background swap

• Editing: undo/redo, copy/paste selection, flip/rotate selection, clear canvas; status bar with cursor coordinates

• UI: ‘90s style faux OS window with draggable title bar, toolbar icons, tooltip hints

• Import/Export: import PNG (quantized to palette) and export PNG/SpriteSheet + JSON; save/load from localStorage

• Shortcuts: number keys for tools, +/- for zoom; accessible labels and focus order

• Responsive layout; no uploads to servers