---
title: "@kepano I just tried it this morning on the 245-page Mythos pdf and it failed badly and the outputs ..."
source_name: "Andrej Karpathy(@karpathy)"
original_url: "https://x.com/karpathy/status/2042292197287215230"
canonical_url: "https://www.traeai.com/articles/49163e11-b4d2-4cc3-bc10-a71731330c7a"
content_type: "tweet"
language: "英文"
score: 5.5
tags: ["大语言模型","PDF处理","AI工程"]
published_at: "2026-04-09T17:22:58+00:00"
created_at: "2026-04-19T13:47:20.902294+00:00"
---

# @kepano I just tried it this morning on the 245-page Mythos pdf and it failed badly and the outputs ...

Canonical URL: https://www.traeai.com/articles/49163e11-b4d2-4cc3-bc10-a71731330c7a
Original source: https://x.com/karpathy/status/2042292197287215230

## Summary

Andrej Karpathy指出当前SOTA大模型在处理245页PDF时表现糟糕，认为PDF转换应作为LLM的专用技能而非通用程序。

## Key Takeaways

- 当前顶尖大模型处理复杂PDF文档仍存在严重问题
- PDF内容提取失败表现为输出混乱、结构错乱
- 建议将PDF解析设计为LLM的专项技能而非通用功能

## Content

Title: Andrej Karpathy on X: "@kepano I just tried it this morning on the 245-page Mythos pdf and it failed badly and the outputs were all mangled. Converting pdfs is really hard, I think it has to probably be a Skill not a program, for a SOTA LLM for it to work properly." / X

URL Source: http://x.com/karpathy/status/2042292197287215230

Markdown Content:
# Andrej Karpathy on X: "@kepano I just tried it this morning on the 245-page Mythos pdf and it failed badly and the outputs were all mangled. Converting pdfs is really hard, I think it has to probably be a Skill not a program, for a SOTA LLM for it to work properly." / X

Don’t miss what’s happening

People on X are the first to know.

[Log in](http://x.com/login)

[Sign up](http://x.com/i/flow/signup)

# [](http://x.com/)

## Post

See new posts

# Conversation

[![Image 2](https://pbs.twimg.com/profile_images/1296667294148382721/9Pr6XrPB_normal.jpg)](http://x.com/karpathy)

[Andrej Karpathy](http://x.com/karpathy)

[@karpathy](http://x.com/karpathy)

I just tried it this morning on the 245-page Mythos pdf and it failed badly and the outputs were all mangled. Converting pdfs is really hard, I think it has to probably be a Skill not a program, for a SOTA LLM for it to work properly.

[5:22 PM · Apr 9, 2026](http://x.com/karpathy/status/2042292197287215230)

·

[271.2K Views](http://x.com/karpathy/status/2042292197287215230/analytics)

167

61

1.6K

627

Read 167 replies

## New to X?

Sign up now to get your own personalized timeline!

Sign up with Apple

[Create account](http://x.com/i/flow/signup)

By signing up, you agree to the [Terms of Service](https://x.com/tos) and [Privacy Policy](https://x.com/privacy), including [Cookie Use.](https://help.x.com/rules-and-policies/twitter-cookies)

## Relevant people

*     [![Image 3](https://pbs.twimg.com/profile_images/1296667294148382721/9Pr6XrPB_normal.jpg)](http://x.com/karpathy)       [Andrej Karpathy](http://x.com/karpathy) [@karpathy](http://x.com/karpathy)    Follow   Click to Follow karpathy  I like to train large deep neural nets. Previously Director of AI @ Tesla, founding team @ OpenAI, PhD @ Stanford.   

# Trending now

## What’s happening

Sports · Trending

#WrestleMania![Image 4](https://abs.twimg.com/hashflags/WrestleMania42/WrestleMania42.png)

Trending with [Liv Morgan](http://x.com/search?q=Liv%20Morgan&src=trend_click&vertical=trends)

Trending in United States

simplechain testnet

Trending in United States

Elise Stefanik

Soccer · Trending

Mo Salah

[Show more](http://x.com/explore/tabs/for-you)

[Terms of Service](https://x.com/tos)

|

[Privacy Policy](https://x.com/privacy)

|

[Cookie Policy](https://support.x.com/articles/20170514)

|

[Accessibility](https://help.x.com/resources/accessibility)

|

[Ads info](https://business.x.com/en/help/troubleshooting/how-twitter-ads-work.html?ref=web-twc-ao-gbl-adsinfo&utm_source=twc&utm_medium=web&utm_campaign=ao&utm_content=adsinfo)

|

More

© 2026 X Corp.