The ChatGPT/Codex app bundles a full copy of LibreOffice

(simonwillison.net)

144 points | by timpera 2 hours ago

18 comments

  • isityettime 12 minutes ago
    The new app is an unbelievable mess. Settings are senselessly organized, too. The whole thing has this aesthetic slickness and then underneath it's like the people who make it have never even used it.

    It's not surprising that it's pulled in absolutely massive dependencies, although I'm not sure it's the wrong call on some operating systems. LibreOffice is pretty tried and true.

    • yeutterg 0 minutes ago
      Personally, I like the 3-pane organization (sidebar, chat, browser). I turned ChatGPT into my bookkeeper and social post writing/kanban space, and it works well for these script+browser workflows on desktop.

      However, all of this is confusing:

      - the ChatGPT/Codex split on desktop

      - ChatGPT/Work split on mobile

      - how you remotely access each chat from your phone (some of my most valuable chats are buried in Remote)

      - which chats propagate from device to device, and which remain on that device

  • lgl 1 hour ago
    Does that really mean that it's bundling those apps from the start or did it just download and install them at some point to do some local work on some prompt or job you ask it to?

    I don't see it making much sense to bundle it. I'm sure a LOT of LLM prompts are related with docs, excels, powerpoints etc, etc but don't really see it worth it for it to be bundled on the codex app from the get go, because otherwise, why not also install dozens of other apps?

    • simonw 1 hour ago
      I'm not sure. Someone who hasn't installed the ChatGPT (or Codex) apps yet could confirm this by installing the apps, seeing if that ~/.cache directory exists, then try running a prompt that needs Python or Node.js or LibreOffice and see if it downloads them when needed.
      • zatkin 1 hour ago
        I've never installed the ChatGPT app on my Mac until today. I ran the app, signed in, and I see the same.

        % ls ~/.cache/codex-runtimes/codex-primary-runtime/dependencies/native/libreoffice-headless

        libreoffice manifest.json

        • ValentineC 25 minutes ago
          I have had the Codex/ChatGPT app installed for a few months, and can confirm that there's a 422.9 MB file named LibreOfficeDev.app in the above path.

          More notably, I don't use Computer Use or any of the fancy features, just Codex for agentic coding.

        • zamadatix 43 minutes ago
          Notably: this did not exist after I installed the app, it existed after I ran the app and there was the long startup screen. Presumably, and I'm not sure I'm interested enough to redo it all and find out, that long startup screen involves the default skills plugins setting up their environment and one of those pulls it as a general app requirement.

          I also saw this present after first run on macOS but not Windows.

        • embedding-shape 1 hour ago
          On a Windows installation I see this:

              PS C:\Users\user> ls C:\Users\user\.cache\codex-runtimes\codex-primary-runtime\dependencies\native\
              Mode                 LastWriteTime         Length Name
              ----                 -------------         ------ ----
              d-----         8/27/2026  10:09 AM                git
              d-----         6/16/2026   9:18 PM                jxrlib
              d-----         8/26/2026   7:37 PM                libheif
              d-----         6/17/2026   5:32 AM                poppler
              d-----         8/27/2026  10:09 AM                powershell
          
          So doesn't seem bundled with all installs at least.
    • RomanHauksson 1 hour ago
      > why not also install dozens of other apps?

      because other apps are less likely to be useful, and there's diminishing returns

  • esperent 1 hour ago
    I actually bundle it with my app too and the reason is reading files, especially old xls files. Since I'm bundling it I'm now using it for everything docs related but the specific reason is those old files. I couldn't find anything else that I could just drop it and feel confident it'll just read anything I give it.
  • petilon 34 minutes ago
    There is a serious threat to Microsoft here, if everyone starts using AI for generating and updating Office docs. At some point Office will become just a viewer.
    • trueno 23 minutes ago
      im stoked for that outcome, standard document tooling should not live behind subscription models anymore. i dont care that microsoft spent zillions bankrolling education systems and companies to fall into this cultural lock in over the decades

      whether they like it or not spreadsheets word docs etc are just ubiquitous parts of existing in society at this point you're gonna need to reach for these tools eventually just to apply for jobs or do homework

    • dist-epoch 18 minutes ago
      Don't worry, they are ahead of this.

      Satya said some time ago that they expect soon to have more agents using Microsoft software than humans, and are working on transitioning their focus from serving humans to serving agents.

      https://www.news18.com/business/satya-nadella-announces-micr...

  • pseudosavant 1 hour ago
    Is that what it is using to render and manipulate MS Office documents? That'd explain the poor rendering of some of my files. Bundling all of LibreOffice seems like a pretty huge dependency.
    • JLO64 1 hour ago
      For a docker image of mine I was bundling the full version of LibreOffice as well but I managed to get some space savings by bundling just the no-gui version.
      • zamadatix 37 minutes ago
        Seems to match the screenshot in the blogpost but libreoffice-headless still shows as 429.7 MB.
    • telotortium 38 minutes ago
      I have a skill that instructs ChatGPT/Codex to verify the rendering using the Mac versions of Microsoft Office. Even without registering, you still can open files read-only, which is enough. Apparently Office refuses to open some Open Office XML documents that LibreOffice is fine with, so that's another reason to use this. After a few times, Codex ended up storing some memories to stop producing broken files in the first place.

      I generated the skill originally for ChatGPT 5.5, so some of these may not strictly be necessary anymore with later models. But posting here in case others find it useful: https://gist.github.com/telotortium/844386f762c4b3bab49999ba...

    • nomel 1 hour ago
      > Bundling all of LibreOffice seems like a pretty huge dependency

      What's the alternative library you see?

      • simongg 1 hour ago
        Apache POI
      • MikeTheGreat 1 hour ago
        pandoc
      • verdverm 1 hour ago
        Why not computer use or using the tools the user prefers instead? The primary office suites have APIs/CLIs now
        • tyre 1 hour ago
          Computer use is slow and can take control of the application focus. I’ll be doing things while Claude runs in the background. Suddenly it decides to open the app and try to do something + screenshot it.
      • edemdogbe 1 hour ago
        [flagged]
    • tiahura 1 hour ago
      Yes. If you have word you can instruct to use word via com or AppleScript.
    • OutOfHere 1 hour ago
      Just the headless version is bundled.
  • vb-8448 1 hour ago
    Curiously, I didn't find any reference in the Open source licences section of the codex app.

    Is this a MPL 2.0 violation?

    • zamadatix 46 minutes ago
      Despite the title, I'm not sure it's actually bundled. Some of the skills plugins will download it on the first run. So it depends where they are grabbing it from rather than the presence of the binary on the system, but I haven't checked that deep into where they actually grab it.
      • TZubiri 38 minutes ago
        The license itself may be present in the cache folder.

        Alternatively, ChatGPT might happily disclose authorship and licensing if asked.

        I'm not convinced of the argument that the fact that it is not bundled at download or even at install-time, would free them of the GPL responsibilities. And at this point.

        I'm also not sure HOW the devs bundled libreoffice, whether they just mentioned in a prompt (use libreoffice), or whether they hardcoded a command (like apt install libreoffice), more likely the former, considering the recursive vibecoding nature of this software.

        Whole lotta words to say that I don't know whether this is a GPL violation, but interested in the answer. If it is a violation, the likely fix will probably be yet another prompt that says something like "comply with licensing", which probably already exists, so a more specific "provide attribution (in a way that doesn't bother the user)"

    • thesdev 1 hour ago
      Copyright violation is the last thing one could accuse ChatGPT of.
      • vb-8448 50 minutes ago
        Well, this one is particularly obvious, other one are more fuzzy.
  • paaloeye 36 minutes ago
    First Claude installed 10GB VM [0] without asking, but OpenAI ships LibreOffice. What's next? Somebody ship their monorepo verbatim?

    Honestly, not sure it's worth having those app on your localhost at all. I ended up uninstalling all frontier labs bloated apps and start using Google AI Mode + Antigravity CLI / Claude Code sometimes.

    [0] https://github.com/anthropics/claude-code/issues/22543

  • mirzap 41 minutes ago
    I wonder why they didn't try to discover if the user already has those binaries and use them before downloading.
  • zitterbewegung 36 minutes ago
    It might be for their new Work product which can produce docx, pdf and pox files.
  • jrflo 1 hour ago
    I've noticed that when I have codex read/modify word files the live reasoning snippets often allude to LibreOffice, so that makes sense. I think it was a quick and dirty way for them to interface with docx and xlsx files?
  • dvduval 1 hour ago
    My agent did it? I didn’t do it.
  • simonw 1 hour ago
    (This is more of a tweet than a blog post, it really wasn't written with Hacker News in mind.)
  • trentor 1 hour ago
    I don't see the problem?
    • iAMkenough 1 hour ago
      Who said it was a problem? This looks like an observation to me, not an accusation.
  • quotemstr 1 hour ago
    There's no security benefit to doing this versus demand-downloading hashed-locked components on need.
    • TZubiri 34 minutes ago
      Ok, it's probably not a security decision. It's a common pattern with both storage and memory management to push most reservations to initialization, in order to cluster resource insufficiency errors to a specific install-time when the user or admin can do something about it. An excessive just-in-time approach in both storage and memory would cause OOM and Disk exhaustion to occur at many different times.
  • dvrp 1 hour ago
    And wait till you find out about @oai/walnut
    • bcanzanella 1 hour ago
      do tell!
      • djriley 1 hour ago
        Walnut is the .NET and OpenXML backend. I think the point parent was trying to make it that it shouldn't be surprising Codex bundles runtimes for damn near everything.
  • m3kw9 1 hour ago
    probably uses it extensively to convert between LLM working on a doc and exporting it out to excel, word etc
  • cpursley 1 hour ago
    I still don’t understand why with all their cash these companies dont redo their apps in Rust or native. They are all so heavy and dog slow. There are already some very fast cross platform (wasm too!) libraries that can do what poppler does as well as parse and produce various office file formats. Because 2gb is crazy town, these things could be around 100mb, just throw some tokens at the problem.
    • sudo_cowsay 1 hour ago
      Not that easy. Also, they have "priorities." Although their priorities are different than the users'.
      • cpursley 1 hour ago
        Just throw some tokens at the problem. I’ve vibed up a Rust Crux hybrid app that runs well on macOS, iPad and wasm and does some pretty complex xml manipulation and other document work. Absolutely smokes electron and you get native UI.

        Ref: https://redbadger.github.io/crux/

        • doc_ick 1 hour ago
          On top of everyone else’s great points, if you make your own “fork” of something, then you have to consistently maintain it. Which can be done with tokens, but an extra cost with something that’s not as user tested.
          • cpursley 31 minutes ago
            I’m not talking about forking, but using standard libraries and native frameworks instead pretending electron is a desktop app.
        • verdverm 1 hour ago
          one does not just "throw tokens" at a problem, Ai is not that capable, and we are talking about MS Office file format, likely a NP hard problem
          • cpursley 16 minutes ago
            AI is especially good at ports like this where there’s a known and well tested surface area.
          • vb-8448 1 hour ago
            But in case they succeed the return on image will be astonishing.
            • doc_ick 1 hour ago
              Can you expand upon this?
          • sigbottle 1 hour ago
            I mean, aside from all the NP Hard sub problems (I might not be reading your satire though), the real hard problem is that a "product" is not just software, but an ecosystem and a promise of maintenance of the abstract user experience & quality of it.
    • nomel 1 hour ago
      What % of time, for a an average session, do you think is app overhead vs waiting for tokens? And there's your answer for why it's not a priority.
      • andai 1 hour ago
        Jon Blow's response to this take was, "yes, which is why you have to work even harder to hide latency", instead of adding more on top.
      • nikanj 1 hour ago
        From OpenAIs perspective, resources on your computer are free and wasting them is inconsequential
        • tmp10423288442 35 minutes ago
          Kind of. Eventually it gets too slow even for the OpenAI engineers using it, and then they need to fix it.
    • quotemstr 1 hour ago
      What makes you think Rust is automatically better?

      (Also, "Rust or native" is a strange dichotomy. What's not native about Rust?)

      • kennywinker 1 hour ago
        I think “or native” is a gesture at swift/objc for mac and C# or whatever people write windows apps in.
      • cpursley 14 minutes ago
        Rust or native is objectively more performant and have smaller binaries than these web apps in Halloween costumes…
  • alex-moon 1 hour ago
    Someone may need to explain to me what is wrong with this sorry. Is it because it bloats the app with functionality that some users will never use? I feel like that is fairly usual for productivity/business apps generally.
    • simonw 1 hour ago
      I don't see anything wrong with it, I just think it's interesting.
      • alex-moon 1 hour ago
        Oh right, yeah I agree. It's the kind of thing I can imagine the harness downloading in the background anyway (or instructing the user to do) at some point so I can see the sense in just skipping that bit. Kind of comforting they just do it the same way the rest of us do - if it ain't broke and so on.
      • nialse 1 hour ago
        It does, however, introduce a potentially enormous attack surface into ChatGPT, along with creative opportunities for less security conscious individuals and LLMs.
      • winstonp 1 hour ago
        I think it's overbloating my computer
    • OutOfHere 1 hour ago
      Actually, people do use and require the functionality, which is the point. The title as posted might be incorrect.
      • alex-moon 1 hour ago
        Yes, that's what I mean - maybe that didn't come across cos I said "bloats". I work for a business that builds web apps for corporates - LibreOffice is bundled in most of the repos of ours that I've seen, a bit like Imagick is in the broader sector.