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'''Writing Block''' is a structured text presentation format in the ChatGPT interface, designed for finished documents that users can edit, copy, or export directly. Introduced by OpenAI as an evolution of the artifact concept, Writing Block became the standard way to work with complete texts in ChatGPT by 2026.

== Description ==

A Writing Block is a visually distinct container within a ChatGPT conversation that contains:

* finished text (email, document, article, post, etc.);
* metadata (subject, document type, language);
* formatting elements (bold, lists, links, headings).

Unlike a regular text response, a Writing Block represents a separate editable object with which the user can perform various actions directly in the interface.

== History ==

* '''2024''' — the first discussions of the "artifact" concept emerged in the OpenAI community. Claude by Anthropic introduced similar functionality (Artifacts) as a separate window for code and documents.
* '''2025''' — OpenAI began gradually rolling out Writing Blocks in ChatGPT. The feature became available to ChatGPT Plus, Team, and Enterprise users.
* '''2026''' — Writing Blocks became a standard part of the ChatGPT interface. Built-in support for editing, exporting, sending email drafts, and saving to the Library was added.

== Capabilities ==

=== Editing ===

Users can edit Writing Block text directly:

* select a fragment and modify it;
* ask ChatGPT to rewrite selected text or the entire block;
* undo or redo recent changes;
* open the block in a full-screen editor.

=== Formatting ===

Writing Block supports standard formatting:

* '''bold''' and ''italic'' text;
* headings (H1–H3);
* bulleted and numbered lists;
* checklists;
* hyperlinks;
* blockquotes.

=== Export and Integrations ===

* copy text to clipboard;
* send email drafts directly from ChatGPT (when integration is available);
* save to ChatGPT Library;
* export to third-party formats.

== When Writing Block Is Used ==

ChatGPT automatically places a response in a Writing Block when the user requests a finished text:

* "Write an email to a client";
* "Compose a LinkedIn post";
* "Write an article about...";
* "Rewrite this text";
* "Create a document";
* "Write a Telegram message".

Writing Block is '''not used''' when the request is explanatory or inquisitive:

* "What is HTTP?";
* "Explain the formula";
* "Compare two approaches".

== Text Types ==

{| class="wikitable"
! Type !! Example Use Case
|-
| Email || Business correspondence, cold emails, replies
|-
| Messages (Telegram, Slack, WhatsApp) || Short work and personal messages
|-
| Documents || Memos, reports, instructions
|-
| Articles || Blog posts, reviews, analysis
|-
| Social Media Posts || LinkedIn, Twitter/X, Facebook
|-
| Speeches || Presentations, toasts, talks
|-
| Essays || Academic papers, reflections
|}

== Writing Block vs Code Block ==

{| class="wikitable"
! Feature !! Writing Block !! Code Block
|-
| Purpose || Text, documents || Code, markup
|-
| Editing || Direct text editing || Code editing
|-
| Execution || No || Supported (Python, HTML)
|-
| Preview || Formatted text || HTML, SVG, Mermaid rendering
|-
| Export || Email, copy, Library || Copy, execute
|}

== Availability ==

Writing Block is available in the following ChatGPT versions:

* ChatGPT Plus
* ChatGPT Team
* ChatGPT Enterprise
* ChatGPT Edu

The availability of specific actions depends on the plan, device, workspace settings, and model.

== Limitations ==

* Writing Block is not a markup language or an API format. It is an internal display format of the ChatGPT client.
* When using the OpenAI API, the response is returned as plain text. To obtain structured output, developers must use the [[https://platform.openai.com/docs/guides/structured-outputs Structured Outputs]] API.
* Not all models support Writing Block.
* Writing Blocks cannot be created inside custom GPTs — it is a built-in interface feature.

== Relationship with Structured Outputs ==

In parallel with interface-level Writing Blocks, OpenAI also developed the '''Structured Outputs''' API feature, which allows developers to receive strictly typed JSON responses from the model. Structured Outputs is the programmatic counterpart of Writing Block on the API side: while Writing Block handles visual presentation of a finished document in the chat, Structured Outputs guarantees a well-defined data structure for developers.

== Criticism and Quirks ==

* Writing Blocks do not always render correctly in third-party ChatGPT clients;
* users have noted excessive formatting (frequent horizontal rules, redundant table headers);
* blocks may be incompatible when exported to certain formats (Google Docs, Word);
* on the positive side, Writing Blocks significantly simplify editing long texts compared to regular chat messages.

== Summary ==

Writing Block is a built-in ChatGPT mechanism for working with finished texts as separate objects. It activates automatically when composing emails, articles, documents, posts, and messages, providing users with a convenient interface for editing, formatting, and export. By 2026, Writing Block became an integral part of the ChatGPT user experience, distinguishing finished documents from ordinary conversational responses. The feature is available on paid subscription plans and continues to evolve, though it has limitations when accessed via the API and in third-party applications.

== Links ==

* [https://help.openai.com/en/articles/20001246-working-with-writing-blocks-and-code-blocks-in-chatgpt Working with writing blocks and code blocks in ChatGPT — official OpenAI documentation]
* [https://platform.openai.com/docs/guides/structured-outputs Structured Outputs — OpenAI API]
* [https://community.openai.com/t/artifacts-in-conversations/837135 Feature request: Artifacts in conversations — OpenAI Community]
* [https://www.mdtidy.com/blog/chatgpt-formatting-artifacts ChatGPT formatting artifacts — MDTidy]