You're asking about "ChatGPT Canvas," which is a legitimate feature from OpenAI that enhances how users interact with ChatGPT, especially for tasks involving writing and coding. It's not a standalone new tool in the sense of a completely separate product, but rather an integrated workspace within ChatGPT itself.

Here's a breakdown of what ChatGPT Canvas is and its capabilities for coding and web design, based on current information and how it's evolving:

ChatGPT Canvas: OpenAI's Enhanced Workspace for Coding and Web Design
OpenAI introduced Canvas to address the limitations of a purely conversational interface for tasks that require more structured work, editing, and revision. It essentially provides a dedicated, interactive editor where you can collaborate with ChatGPT on projects.

Key Features and Capabilities for Coding & Web Design:

Dedicated Workspace:

Unlike the traditional linear chat, Canvas opens a separate, often split-screen, interface. The left side usually retains the chat interaction, while the right side displays the "canvas" – your editable project space.

This makes it easier to track changes, compare versions, and see the full context of your code or design elements without scrolling through long chat histories.

Real-time Editing and Collaboration:

Direct Editing: You can directly type and edit text or code within the Canvas. This is a significant improvement over copying and pasting output from the chat window.

Inline Suggestions & Feedback: This is a core strength. You can highlight specific sections of your code or text, and ChatGPT can provide inline suggestions, refactorings, or explanations directly within that highlighted area. It's like having an AI co-editor or code reviewer.

Contextual Understanding: Powered by advanced models like GPT-4o, Canvas is designed to better understand the overall project context, making its suggestions and edits more relevant and integrated.

Coding-Specific Features:

Code Generation: You can prompt ChatGPT in the chat window to generate code snippets, full files, or even basic web pages (HTML, CSS, JavaScript), and it will populate them directly into the Canvas.

Code Review: Ask ChatGPT to review your code in the Canvas for potential bugs, inefficiencies, security vulnerabilities, or adherence to best practices. It can offer specific suggestions.

Debugging & Bug Fixing: You can paste problematic code into the Canvas and ask ChatGPT to identify and fix errors. It can also suggest adding print statements or log entries to help you debug.

Code Translation/Porting: Request ChatGPT to convert code from one programming language to another (e.g., Python to JavaScript).

Adding Comments & Logs: Quickly add comments for clarity or log statements for debugging purposes with simple commands.

Basic Markdown Formatting: Supports basic formatting like bold, italics, headers, bullet points within the text editor for organizing code or accompanying documentation.

Web Design and Content Creation Synergy:

While not a visual web design tool like Figma or Webflow, Canvas can be immensely helpful for the code behind web design.

You can generate HTML structures, CSS styling rules, or JavaScript functionalities.

For content-driven websites, it excels at generating:

Long-form articles and blog posts.

Landing page copy.

Product descriptions.

SEO meta titles and descriptions.

Content for various sections of a webpage.

You can use Canvas to draft content and simultaneously work on the underlying code for a more integrated workflow.

Workflow Enhancements:

Version Control (Basic): Canvas typically allows you to step back through previous versions of your work within the session, which is useful for iterative development.

Shortcuts: It often includes quick shortcuts or commands to perform common actions like adjusting text length, changing reading levels, or applying final polish to written content.

Triggering Canvas: Canvas can either open automatically when ChatGPT detects a task that would benefit from it (like generating a longer piece of content or code), or you can manually trigger it with a prompt like "use canvas" or by selecting the option in the interface.

Who Can Access It?

As of recent updates, Canvas is typically available to ChatGPT Plus, Team, and Enterprise users. OpenAI has expressed plans to eventually roll it out to all ChatGPT Free users once it's out of beta.

Implications for Coding and Web Design in 2025:

Accelerated Prototyping: Developers and designers can rapidly generate boilerplate code, explore different design patterns, and test concepts much faster.

Reduced Context Switching: By having a dedicated workspace, users can stay focused within the ChatGPT environment without constantly copying code to an IDE or document editor.

Learning and Education: It becomes an even more powerful learning tool, allowing users to experiment with code, ask for explanations, and see real-time corrections.

Enhanced Collaboration with AI: The inline feedback and editing capabilities make the AI feel more like a direct collaborator rather than just a conversational assistant.

"Human-in-the-Loop" AI: Canvas reinforces the idea that AI is a powerful assistant, but human oversight, refinement, and decision-making remain crucial for complex projects.

In summary, "ChatGPT Canvas" isn't a completely standalone visual design tool akin to Figma or a full-fledged IDE, but it significantly elevates ChatGPT's utility as an intelligent co-pilot for both textual content creation and the underlying code in web design and software development. It streamlines workflows, improves contextual understanding, and facilitates more interactive and efficient collaboration with the AI.