PuppyIP Resource Center
AI Tool Troubleshooting 5 min read Published 2026-11-05

ChatGPT File Upload Errors: Limits and Reading Checks

Check OpenAI Status first, then verify file format, size, upload rate, and saved storage. If an uploaded chart is missing, check whether the file was attached to a chat, project, or GPT knowledge.

ChatGPT File Uploads File Reading Troubleshooting

Service eligibility and regional restrictions

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Key Takeaways

  • Separate service incidents, file format or size limits, upload rate, and saved storage before testing the browser or network. Repeated retries do not necessarily leave the upload quota untouched.
  • Documents, spreadsheets, presentations, text, and audio have different format and size limits. Availability can also depend on plan, workspace, region, client version, and model.
  • Upload rate and saved-file storage are separate limits, and failed upload attempts can sometimes count toward the rate limit.
  • PDF images, browser/network errors, and account limits need different checks. Support requests should include the relevant time, platform, and request ID when available.

Check service status without assuming individual recovery

If an upload fails, check current OpenAI Status, then the file format, size, account plan, and any displayed retry time. If the file uploaded but a chart is missing, check where the attachment is being used before treating the reading problem as a network failure and uploading again.

For historical context, OpenAI marked the November 3, 2026 ChatGPT file-upload incident resolved at 05:39:36 UTC. The notice did not identify the cause or confirm the state of any one account, file, or device. It cannot replace a current status check.

Check availability, file type, and size

Document, spreadsheet, presentation, text, and image uploads are available on Free and paid plans on the web and supported mobile apps, subject to plan limits and account settings. Audio uploads are available on paid subscriptions and workspaces, including Enterprise, but not on Free at this time. Availability may also vary by workspace settings, region, client version, and selected model.

Documents and text support DOCX, PDF, and TXT; export a .gdoc as PDF or DOCX first. Spreadsheets support XLSX, XLS, CSV, and TSV, and presentations support PPTX.

Audio supports WAV, MP3/MPEG, OGG/OGA, audio-only WebM, PCM, FLAC, AAC, M4A, and audio-only MP4, with a valid, decodable audio stream. WebM/MP4 files identified as video are not supported as audio uploads.

Documents and presentations have a 512 MB per-file maximum. Text and document files also have a 2-million-token limit per file; tokens are the pieces of text a model processes. This token limit does not apply to spreadsheets.

CSV files and spreadsheets are limited to approximately 50 MB, depending on row size; images to 20 MB each, and audio to 512 MB. API file requirements, purposes, and limits are separate. Do not apply these ChatGPT quotas directly to API uploads.

Separate upload rate from saved storage

The Help Center lists an upload-rate limit of up to 80 files every 3 hours. Free users are limited to 3 file uploads per day. OpenAI may lower these limits during peak hours.

Failed upload attempts can sometimes count toward the rate limit. If an error shows a retry time, wait until then before trying again.

Shared saved-file storage is capped at 25 GB per user and 100 GB per organization. On the web, Settings > Storage shows saved-file usage, but does not show the remaining rolling upload-rate quota.

Project file limits are 5 for Free, 25 for Go and Plus, and 40 for Edu, Pro, Business, and Enterprise. GPT knowledge supports up to 20 files. File-size and user or organization storage caps still apply.

When a file uploads but its contents are missing

ChatGPT can analyze text and images in PDFs, including charts and diagrams. However, embedded images may not be included automatically when a PDF is saved as GPT knowledge or a project file. To ask about a specific chart, attach the PDF directly to the chat or upload the image separately. The Help Center lists PNG, JPEG, and non-animated GIF for separate images.

GPT knowledge, project files, and direct chat attachments are handled differently. Confirm that you selected the intended file and location. If only a PDF chart is missing, use the documented direct-attachment or separate-image option; do not assume that every PDF or account has a reading failure.

Try local checks, then contact Support

Refresh or start a new chat, then compare a private window, another browser, or another device; clear cache and cookies if needed. In a test environment where you may change settings, check one extension, VPN, proxy, or secure DNS setting at a time, record the result, and restore it afterward. Ask an administrator to help with managed workspaces or networks.

These are checks drawn from the official general and network-error guide, not a confirmed fix for every upload failure. A browser or network change does not remove account, file, or quota restrictions.

Contact OpenAI Support with your account email, a screenshot, time and time zone, platform or browser, and request ID if available. If the problem persists across browsers, devices, and networks, follow official Support instructions to collect timestamped HAR network-request records, console errors, the model, and conversation URL or ID.

A HAR can contain cookies, authentication information, or private content. Sanitize it following Support instructions and share only necessary material through official Support channels. Do not publish it publicly, and redact unrelated private content from screenshots.

Sources

Frequently Asked Questions

Why can a file below 512 MB still exceed the text limit?

MB measures file size; tokens measure the pieces of text a model processes. They are different units. Documents must meet both limits, so a fixed MB-to-token conversion cannot guarantee that a document fits the text limit.

Does deleting saved files immediately reset the upload-rate limit?

Do not assume that it does. OpenAI treats saved storage and the rolling upload rate separately, and the sources for this guide do not promise an immediate rate reset after deletion. Follow the actual error type and any displayed retry time.