OpenAI has made ChatGPT less fragile when you paste in long documents, large notes, or big code blocks.
As of the June 22, 2026 ChatGPT release notes, very large pastes are automatically converted into attachments. OpenAI says this now applies across all plans, including Free and Go, and the threshold is over 10,000 characters.
What Changed
When a paste is large enough, ChatGPT can keep it as an attachment instead of flooding the message field. That keeps the conversation cleaner and lowers the chance that a long input gets cut off, misread, or accidentally lost while you are preparing the prompt.
Users who want the old behavior can still choose to show the content in the text field. The useful default, though, is that long material now lands in a format that is easier for both the user and the assistant to handle.
Why It Matters
This is not a flashy model launch. It is the kind of small workflow change that can make daily AI use more reliable. Researchers can bring longer source material into a chat, developers can paste bigger snippets, and writers can work with drafts without constantly trimming the input first.
What To Try Next
- Paste a long draft, transcript, or code snippet into ChatGPT.
- Confirm that ChatGPT converts it into an attachment.
- Ask for a summary, rewrite, bug check, or extraction task against that attachment.
- Use "Show in text field" only when you specifically need the content inline.
Bottom Line
ChatGPT's new large-paste handling makes long-form work less clumsy. For regular users, it means fewer failed pastes and a cleaner path from source material to useful output.